The future of healthcare isn’t only about new treatments or cutting-edge equipment, it’s about creating environments that actively support healing, safety, and efficiency. At the heart of that vision? Smart Hospital HVAC systems that do more than heat and cool. They help prevent infection, support patient comfort, and reduce operational costs.

Designing HVAC systems for hospitals and clinics requires more than technical skill. It takes a deep understanding of how people use a space, how air moves through it, and how technology can help us do both better. From advanced filtration and air pressure controls to digital building automation and energy-saving strategies, hospital HVAC is evolving and the right design can make all the difference in how a facility feels, functions, and performs.

It Starts with Outcomes: Safety, Comfort, and Control

In any healthcare setting, the HVAC system must support three key goals: protect patients, support staff, and ensure efficient operations. That means air must be clean and carefully controlled, not just in temperature, but in humidity, filtration, and pressure.

Operating rooms need cool, sterile air with high air change rates and tight humidity control. Patient rooms should be warm and quiet to support healing. Labs, imaging suites, and isolation rooms require specialized pressure differentials to keep pathogens from spreading.

Every space has different demands and the healthcare HVAC system must meet them all, seamlessly.

Regulations and Standards You Can’t Ignore

Healthcare HVAC design isn’t guesswork. Agencies like ASHRAE, the CDC, and the Facility Guidelines Institute (FGI) provide detailed requirements for ventilation, filtration, and air quality in different spaces. For example, ASHRAE Standard 170 outlines specifications for over 80 room types—from emergency departments to meditation rooms.

Key requirements include:

• Air pressure relationships between rooms
• Minimum air changes per hour (ACH)
• Filtration efficiency (often HEPA-level for infection control)
• Temperature and humidity ranges
• Whether air must be recirculated or exhausted

Following these standards ensures compliance and supports better health outcomes. Ignoring them? That can put patients (and your facility’s reputation) at risk.

Designing Hospital HVAC for Efficiency and Performance

Hospitals never sleep, and neither do their HVAC systems. But that doesn’t mean efficiency has to take a back seat. Modern system design includes advanced control strategies, zoning, and energy recovery technologies that reduce energy use while still meeting performance needs.

Variable Refrigerant Flow (VRF) systems, for example, allow refrigerant to flow exactly where and when it’s needed, reducing energy use while giving patients more control over their environment. VRF systems are particularly effective in patient care rooms and administrative areas where individual comfort matters.

Coupled with building automation systems, hospitals can schedule setpoints based on occupancy, optimize airflow in real-time, and reduce energy waste in unused spaces without sacrificing comfort or safety.

Hospital HVAC Technology: Smart Systems and BIM Planning

Today’s healthcare HVAC systems are smarter and more connected than ever. Building automation allows facilities teams to monitor, adjust, and troubleshoot climate conditions across the hospital from a single platform. Occupancy sensors can scale HVAC output up or down based on room usage, and scheduling tools ensure energy isn’t wasted after hours.

But the real magic happens before installation. At Tessiers, we use Building Information Modeling (BIM) to create detailed 3D models of HVAC systems in your facility. This allows us to identify potential conflicts early, coordinate seamlessly with other trades, and ensure precise installations, especially in renovation or retrofit projects where space is tight and uptime is critical.

Infection Control: The Heart of Healthcare HVAC

Clean air saves lives. That’s why infection control is at the core of healthcare HVAC design. High-efficiency particulate air (HEPA) filters capture airborne contaminants before they reach patients or staff. Isolation rooms require negative pressure to keep pathogens in. Operating rooms often use positive pressure to keep contaminants out.

Frequent air changes, humidity control, and proper airflow direction all work together to reduce the risk of hospital-acquired infections (HAIs). But these systems must be maintained. Filters need regular replacement, dampers and sensors must be calibrated, and airflow must be tested consistently.

Designing for 24/7 Reliability and Redundancy

Hospitals can’t afford HVAC downtime. Systems must be designed not only for performance but also for resilience. That includes backup power supplies, equipment redundancy, and built-in service access to minimize disruption during service or repairs.

An experienced mechanical service company will understand how to coordinate system upgrades or replacements without interrupting patient care. From phased shutdowns to after-hours work, proper planning protects both operations and safety.

A Team Approach to Design

Designing the right HVAC system for a healthcare facility isn’t a solo job. It requires collaboration with hospital administrators, clinical staff, architects, engineers, and facility managers. It starts by asking: What are your priorities? Infection control? Energy savings? Patient experience?

From there, we identify the right solutions for each zone, calculate system loads, and analyze life cycle costs. We help balance performance with efficiency, and regulatory compliance with long-term value.

Better Hospital HVAC Design = Better Care

Your HVAC system may never be the star of the show, but when it’s designed well and regularly serviced, it plays a starring role in patient care, staff satisfaction, and cost control.

At Tessiers, we bring over a century of experience, cutting-edge technology, and deep healthcare expertise to every project. (Don’t take our word for it, check out our past healthcare projects.) Whether you’re building new, upgrading an existing system, or looking for proactive maintenance support, we’re here to help you design with purpose and build with precision.

In places like manufacturing plants, warehouses, data centers, and processing facilities, air conditioning does way more than just keep things comfortable—it’s about protecting equipment, keeping workers safe, and making sure your operation runs smoothly.

So, what makes industrial air conditioning different from typical commercial or residential systems? What types of systems are commonly used, and what do facility managers need to know to ensure reliable performance? Let’s break it down.

Why Industrial Facilities Need Robust Air Conditioning

Industrial facilities face unique environmental challenges that demand more from their HVAC systems. In these settings, industrial air conditioning doesn’t just cool the air. It also helps:

• Protect sensitive equipment from overheating (critical in data centers, control rooms, and manufacturing plants).
• Ensure worker safety and comfort, especially in areas exposed to heat-producing processes.
• Maintain air quality by regulating humidity and ventilating fumes or airborne contaminants.
• Comply with industry-specific environmental regulations related to temperature control and air exchange.

Without reliable cooling, your facility could be facing more than just discomfort. Overheating equipment, unsafe working conditions, and unexpected downtime can bring operations to a halt, costing time, money, and productivity. Whether you’re managing sensitive machinery, maintaining safe environments for your team, or ensuring consistent product quality, your industrial air conditioning system plays a critical role in keeping everything running smoothly. That’s why an industrial cooling system isn’t just a convenience, it’s a key part of your operational success.

Common Industrial Facilities that Require Air Conditioning

Not every industrial space has the same cooling needs. Here are a few examples of common industrial facilities that rely on air conditioning:

• Manufacturing plants: Heavy machinery and production lines generate significant heat, requiring large-scale cooling.
• Warehouses and distribution centers: These expansive spaces need even air distribution to protect products and maintain safe conditions for workers.
• Data centers: Servers generate heat 24/7, requiring precise temperature and humidity control.
• Food processing plants: Cooling systems regulate temperature to ensure product quality and meet safety standards.

Chemical plants and refineries: Air conditioning manages both cooling and ventilation to maintain a safe working environment.

Special Considerations for Industrial Air Conditioning

Managing air conditioning in industrial environments comes with additional challenges:

• Larger spaces require high-capacity systems to ensure consistent airflow and temperature regulation.
• Many facilities need zoned cooling to manage varying heat levels across different areas.
• Ventilation and air exchange are critical in industrial settings, especially where fumes or contaminants are present.
• Systems must withstand corrosive environments, high particulate levels, and continuous operation.

This makes system selection, installation, and service especially important to avoid costly downtime or compliance issues.

Types of Industrial Air Conditioning Systems

Industrial air conditioning systems are designed to handle larger loads, higher heat output, and more complex demands than standard systems. Here are some of the most common configurations:

Central Chilled Water Systems

Chilled water systems provide high-capacity cooling for large industrial and commercial facilities. They circulate cooled water through pumps and piping to air handlers or fan coils, delivering chilled air for environmental control and industrial processes. These systems typically include a central chiller, either air-cooled or water-cooled, along with air handlers and extensive piping. Ideal for data centers, power plants, and manufacturing plants with significant cooling demands, chilled water systems offer reliable, efficient performance. However, they require regular expert service to ensure smooth operation and prevent costly downtime.

Rooftop Units (RTUs)

RTUs are self-contained systems where the compressor, condenser, evaporator, and fan are housed in a single cabinet, typically installed on the roof. These units are easy to install and maintain and are ideal for large open spaces like warehouses, distribution centers, logistics hubs, and light industrial spaces. Using RTUs saves floor space and provides reliable cooling with straightforward service access.

See our recent blog post: Are Rooftop Units (RTUs) a Good Choice for Commercial Buildings?

Ductless Zoning Systems (VRF/VRV)

While not typically the primary system for large industrial spaces, VRF/VRV systems are ideal for specific zones like control rooms, offices, or laboratories within an industrial facility. These systems provide targeted cooling without ductwork, offering energy efficiency and precise temperature control. Their key strengths include flexible installation, individual zone control, and quiet operation.

Process Cooling Systems (Specialized Cooling)

Beyond general air conditioning, some industries require process cooling systems, designed specifically to cool machinery, materials, or processes. These systems ensure that equipment operates within safe temperature ranges and often work alongside traditional industrial HVAC systems. Process cooling systems work well for chemical plants, food processing, metalworking, or any facility with heat-generating equipment or processes. Their components may include chillers, heat exchangers, glycol systems, or other specialized cooling equipment.

Choosing the Right System

The right industrial air conditioning system depends on several factors:

• Size and layout of the facility
• Type of operations (general environmental cooling vs. process cooling)
• Cooling load requirements
• Ventilation and air exchange needs
• Environmental conditions (dust, chemicals, moisture)

The Best Time for Industrial HVAC Service and Repairs

Is your industrial cooling system ready for summer? As temperatures start to rise, now is the time to ask: Is your system up to the task? Keeping your system in top shape with preventative maintenance helps you avoid costly interruptions and ensures your facility is ready for whatever the season brings.

Spring is the perfect time to inspect, service, or even upgrade your industrial HVAC before the summer heat puts extra strain on your operations. Here’s why:

• Catch problems before peak demand: Summer heat pushes industrial HVAC systems to their limits. Addressing issues now prevents breakdowns when you need cooling the most.
• Improve efficiency: A well-maintained system runs smoother, reducing energy costs—a major consideration in large facilities.
• Extend equipment life: Routine inspections, repairs, and cleaning prevent wear and tear, helping you get more years out of your investment.
• Meet compliance requirements: Many industries have specific air quality and temperature regulations. Ensuring your system is functioning properly helps you stay compliant.

Partner with Tessiers for Industrial Cooling Solutions

At Tessiers, we provide industry-leading service for commercial and industrial HVAC. Our team understands that every facility is different, which is why we work with you to customize a maintenance program that fits your specific needs and keeps your mechanical systems running at optimal performance levels.

When you partner with Tessiers, you’re not just getting routine checkups, you’re getting a comprehensive care plan that includes:

• Full system inspections to identify wear and tear
• Filter replacements and airflow optimization
• Coil cleaning to improve heat exchange efficiency
• Refrigerant checks to ensure proper system charge
• Control system testing for accurate operation

And because we know that unexpected breakdowns can happen at any time, Tessiers provides 24-hour emergency service for your heating and cooling systems. Whether it’s a sudden failure or a last-minute repair, our team is ready to respond and get your system back up and running fast, minimizing downtime and protecting your operations.

We understand the complex demands of industrial environments and can provide customized solutions that meet your specific needs. Don’t wait for the summer heat to arrive. Contact Tessiers today to schedule an HVAC system inspection or discuss an upgrade.

When it comes to heating, ventilation, and air conditioning (HVAC) systems for commercial buildings, there’s no one-size-fits-all solution. But one of the most popular and widely used systems across the U.S. is the rooftop unit, or RTU. These compact, all-in-one HVAC systems have been a go-to option for decades—and for good reason.

If you’re planning a new facility or upgrading your existing system, you might be wondering: Are RTUs a good choice for your commercial building? Let’s take a closer look at how RTUs work and when they’re the right fit.

What Is an RTU?

An RTU (rooftop unit) is a type of packaged HVAC system where all components—including the compressor, condenser, evaporator, and air handler—are housed in a single unit and installed on the roof of a building. RTUs are typically direct expansion (DX) systems, meaning they use refrigerant to cool the air, and heat is often provided through a gas furnace or electric coils located within the unit.

They’re common in retail stores, office buildings, schools, and other mid-sized commercial facilities that require reliable climate control without the complexity of large, custom-built HVAC systems.

Benefits of Rooftop Units for Commercial Buildings?

RTUs remain a favorite among building owners and facility managers for several key reasons:

1. All-in-One Convenience

RTUs are self-contained units that require minimal space and infrastructure. All critical HVAC components are packed into a single cabinet, simplifying installation, operation, and maintenance.

2. Saves Interior and Ground Level Space

Because RTUs are installed on the roof, they don’t take up valuable square footage on the ground or inside your building. This is especially useful in densely populated areas or facilities where every inch of usable space matters.

3. Simplified Maintenance Access

Having HVAC equipment on the roof means service technicians can access and work on the system without disrupting building operations or daily activities. This also helps reduce noise inside the building.

4. Scalable and Modular

As your building grows, your HVAC system can too. RTUs are modular, meaning you can add more units as needed to accommodate expansions or increased demand. This scalability makes them an ideal choice for growing businesses.

5. Zone Control

Multiple RTUs can be used to serve different zones within a building. This allows you to control temperature independently in each area, increasing energy efficiency and occupant comfort. (Read more about Commercial HVAC System Zoning in our recent blog post)

6. Cost-Effective

RTUs tend to have lower upfront costs compared to more complex HVAC systems, such as chilled water systems or variable refrigerant flow (VRF) systems. Their all-in-one design also helps minimize installation time and labor.

When RTUs Might Not Be the Right Fit

While RTUs are a great solution for many buildings, they’re not ideal for every situation. Consider the following scenarios where an RTU might not be the best option:

High-Rise Buildings: Multi-story buildings with many floors may have difficulty distributing air efficiently from rooftop units, making other systems like VRF or central plants more effective.

Architectural Restrictions: Some buildings—particularly in historic or urban areas—have restrictions on visible rooftop equipment, which could limit RTU placement or require additional aesthetic screening.

Highly Specialized Environments: Facilities like labs, cleanrooms, or surgical centers may require precise humidity and temperature control across many zones. In these cases, custom-designed systems or VRF setups may offer better performance and flexibility.

Ideal Applications for RTUs

RTUs are a strong fit for buildings that require reliable, straightforward HVAC performance without the need for extensive customization. 

Some of the most common applications include:

• Retail Stores
• Office Buildings
• Schools and Universities
• Restaurants
• Warehouses
• Light Industrial Facilities
• Community Centers or Religious Buildings

How Long Do RTUs Last?

With proper maintenance, an RTU can last 15 to 20 years. Regular filter changes, coil cleaning, and inspections help prevent wear and tear, ensuring your system stays efficient and reliable over the long term.

At Tessiers, we offer preventative maintenance plans that help you get the most life out of your RTU and keep your system operating at peak performance.

See RTUs in Action: Tessiers Installs 22 Rooftop Units

Curious what it looks like when RTUs are installed at scale? Check out how the Tessiers team safely and successfully installed 22 rooftop units on a 330,000 square foot warehouse in Sioux Falls, SD: RTU Unit Installation with Helicopter. 

Due to site constraints and the reach required, our experienced preconstruction team determined that a helicopter was the most effective solution. With detailed planning, safety protocols, and incredible coordination, each unit was installed in under three minutes.

Are RTUs Right for You?

If you’re looking for a reliable, cost-effective, and space-saving HVAC solution for your commercial building, an RTU may be a great fit. At Tessiers, we’ve installed and maintained RTUs for a wide range of industries across the Midwest—and we know how to evaluate your building’s needs and recommend the best solution.

Whether you’re designing a new facility or upgrading your existing HVAC system, our team is ready to help you plan, install, and maintain the right system for your space and budget.

Indoor air quality in schools directly impacts the health, comfort, and performance of students and staff. Poor indoor air quality (IAQ) is more than just an inconvenience—it can contribute to a range of health issues, from allergies and respiratory problems to fatigue and difficulty concentrating. According to the Environmental Protection Agency (EPA), indoor air pollution consistently ranks among the top five environmental risks to public health. This makes HVAC systems for schools a crucial component in maintaining a healthy learning environment.

Why Indoor Air Quality Matters in Schools

Children breathe in more air per pound of body weight than adults, making them more vulnerable to airborne pollutants. Schools often house hundreds or even thousands of students, teachers, and staff, all of whom rely on a clean and well-ventilated environment to stay focused and healthy. 

Poor indoor air quality in schools can lead to:

• Increased asthma and allergy flare-ups
• Higher absenteeism rates
• Reduced concentration and learning capacity
• Greater risk of respiratory infections
• General discomfort such as headaches, fatigue, and irritation of the eyes, nose, and throat

The HVAC System’s Role In Indoor Air Quality In Schools

An effective heating, ventilation, and air conditioning (HVAC) system is the first line of defense in maintaining good indoor air quality in schools. 

The primary functions of an HVAC system include:

• Ventilation: Bringing in fresh outdoor air and removing stale indoor air
• Filtration: Capturing airborne pollutants, including dust, mold spores, and allergens
• Temperature Control: Maintaining comfortable and consistent indoor temperatures
• Humidity Regulation: Preventing mold growth and excessive dryness

A well-maintained HVAC system ensures that air is continuously cycled and filtered, preventing the buildup of contaminants that can impact student health and performance.

Key Strategies for Improving Indoor Air Quality In Schools Through HVAC Systems

Regular HVAC Maintenance and Inspections

Routine HVAC maintenance is essential for keeping air quality at optimal levels. This includes:

• Cleaning and replacing air filters regularly to remove dust, pollen, and bacteria
• Inspecting and maintaining ventilation ducts to prevent blockages and mold buildup
• Ensuring heating and cooling systems operate efficiently to maintain proper air circulation

Action Tip for Schools: Establish a preventative maintenance plan with scheduled HVAC inspections and filter replacements to prevent air quality issues before they arise.

Enhancing Ventilation

Proper ventilation dilutes indoor air pollutants and provides a steady flow of fresh air. Schools can enhance ventilation by:

• Using mechanical ventilation systems that meet ASHRAE Standard 62.1, which sets the minimum ventilation rates for acceptable indoor air quality in schools
• Installing energy recovery ventilators (ERVs) to improve air exchange while reducing energy costs
• Opening windows and doors when outdoor air conditions permit to increase airflow

Action Tip for Schools: Evaluate classroom ventilation rates and consider upgrading systems to meet modern ventilation standards.

Upgrading to High-Efficiency Air Filtration

Air filtration plays a crucial role in removing harmful particles from the air. Many school HVAC systems still use outdated filters that do little to improve IAQ. Upgrading to high-efficiency particulate air (HEPA) filters or MERV 13-rated filters can significantly reduce airborne contaminants.

Action Tip for Schools: Review HVAC filter ratings and invest in high-quality filters that capture smaller airborne particles for improved air quality.

Managing Humidity Levels

Excess humidity can lead to mold growth, while low humidity can cause respiratory discomfort. Schools should aim to keep indoor humidity levels between 30-50% to prevent these issues.

Ways to regulate humidity:

• Use dehumidifiers in humid climates to prevent mold
• Utilize humidifiers in dry climates to maintain comfort
• Monitor humidity levels regularly with indoor air quality sensors

Action Tip for Schools: Incorporate humidity sensors into the HVAC system to maintain optimal levels year-round.

Using Smart IAQ Monitoring Tools

Advancements in technology have made it easier to track and improve indoor air quality in schools in real-time. 

Schools can use wireless IAQ monitors to detect issues such as:

• High levels of carbon dioxide (CO2), which can cause drowsiness and reduced cognitive function
• Elevated particulate matter (PM2.5) from dust, pollen, or pollution
• High volatile organic compounds (VOCs) from cleaning supplies or building materials

Action Tip for Schools: Implement IAQ monitoring devices in classrooms and shared spaces to track air quality and adjust ventilation as needed.

Addressing IAQ Concerns in Older School Buildings

Many schools, especially older buildings, were not designed with modern IAQ standards in mind. Outdated HVAC systems, poor insulation, and aging infrastructure can contribute to indoor air pollution. To improve indoor air quality in schools in these settings, schools should:

• Upgrade old HVAC systems to meet current ventilation and filtration standards
• Seal leaks and gaps in the building envelope to prevent outdoor pollutants from entering
• Use portable air purifiers in classrooms where HVAC improvements are not immediately possible

Indoor Air Quality for a Healthy Learning Environment

A well-functioning HVAC system is critical in controlling pollutants, regulating temperature, and ensuring adequate ventilation. By prioritizing regular maintenance, upgrading filtration, and improving ventilation, schools can create a safe and comfortable environment for students and staff.

For school administrators and parents looking to improve indoor air quality in schools, investing in modern HVAC solutions and proactive maintenance plans is the best place to start. A commitment to cleaner indoor air today means a healthier, more productive learning environment for generations to come.

Conveyor belts are the backbone of many agricultural and industrial operations. Whether moving grain in an agricultural facility or transporting materials in a manufacturing plant, a well-functioning conveyor system is essential to keeping business operations running smoothly. However, just like any mechanical system, conveyors are prone to wear and tear. A broken conveyor can result in costly downtime, strained client relationships, and increased labor costs. That’s why regular conveyor belt repair, maintenance, and custom fabrication solutions are crucial to extending the lifespan of your equipment and keeping operations efficient.

Understanding Conveyor Belt Life Expectancy

Every conveyor belt is different, and its lifespan depends on several factors: frequency of use, the type of materials it handles, environmental conditions, and maintenance practices. If your belts are failing prematurely, there may be underlying issues such as misalignment, improper installation, or worn-out rollers. Identifying and addressing these issues early can save money and prevent operational disruptions.

Regular Conveyor Belt Maintenance: Prevent Problems Before They Start

Scheduled maintenance is one of the most effective ways to avoid unexpected breakdowns and extend the life of your conveyor belt. Here are some key maintenance practices that will help keep your conveyor system in top shape and prevent the need for costly conveyor belt repairs:

• Inspect Rollers and Bearings Regularly: Worn-out rollers can cause uneven belt wear and premature failure. If a roller is damaged, it should be replaced immediately to prevent additional stress on the belt.
• Keep the Belt Properly Tensioned: Improper tensioning can lead to belt slippage or excessive strain, causing unnecessary wear. Adjust tension as needed to maintain proper performance.
• Tracking Adjustments: Misaligned belts lead to uneven wear and potential damage. Regularly check and adjust belt tracking to ensure smooth operation.
• Lubrication and Cleaning: Dust, dirt, and debris buildup can significantly impact performance. Keep components clean and lubricated to reduce friction and prevent overheating.
• Inspect for Tears and Rips: Small tears can quickly become major issues. Catching and repairing them early will save you from costly replacements.

Repair or Replace? Knowing When It’s Time

Even with regular maintenance, conveyor belts will eventually need repairs or replacements. Knowing when to you need conveyor belt repair and when to replace can save time and money. Here are some key indicators:

When to Repair

• Minor tears or surface damage can often be patched or spliced.
• Misaligned belts that can be corrected with proper tracking adjustments.
• Worn-out rollers or bearings that can be replaced without changing the entire system.

When to Replace

• If a transverse tear extends more than 25% across the belt width, it’s time for a replacement.
• Severe belt delamination or excessive fraying that can no longer be patched.
• Repeated breakdowns despite frequent repairs—this is often a sign that a full replacement is more cost-effective.

Tessiers offers on-site conveyor belt splicing and lacing repair services, ensuring that your conveyor belt repair happens quickly and efficiently to minimize downtime.

Custom Fabrication for Unique Conveyor Needs

Sometimes, off-the-shelf solutions won’t cut it. Custom fabrication can provide the perfect fit for your conveyor system, whether you need:

• Custom belt widths and materials to accommodate specific loads.
• Specialty rollers and components for unique applications.
• Fabricated structural supports, catwalks, or guards for safety and efficiency.

Why Choose Tessiers?

For over 100 years, Tessiers has been a trusted partner in agricultural and industrial mechanical services. Our experienced crews provide on-site conveyor belt repairs, preventative maintenance, and custom fabrication to keep your facility running at peak performance. Whether you need a simple conveyor belt repair or a complete system overhaul, we have the expertise to get the job done right.

At Tessiers, our team of experts specializes in designing, fabricating, and installing components that match your facility’s exact requirements. With our state-of-the-art fabrication shop, we can produce high-quality, durable components built to withstand the demands of agricultural and industrial environments.

If you’re experiencing conveyor belt issues or looking for a reliable maintenance partner, contact Tessiers today. Let us help you prevent costly downtime and keep your operations moving forward.

Efficient and effective ductwork is essential for any HVAC system. Poorly designed or installed ducts can lead to significant issues, ranging from energy inefficiency to reduced air quality. For businesses across industries, these challenges can translate into increased costs and decreased comfort. Fortunately, custom duct fabrication offers solutions to many common ductwork problems, ensuring systems are tailored to meet the specific needs of your facility.

Common Commercial Ductwork Problems

1. Air Leaks

One of the most prevalent issues with ductwork is air leakage. Poorly sealed or ill-fitting ducts can result in a significant loss of conditioned air, causing HVAC systems to work harder to maintain the desired temperature. This not only wastes energy but also increases utility bills and reduces system lifespan.

2. Inefficient Layouts

Standardized ductwork often fails to account for the unique layout of a building. Inefficient designs can lead to uneven airflow, with some spaces being over-conditioned while others remain uncomfortable. This imbalance can be especially problematic in larger facilities or those with irregular layouts, such as schools, hospitals, and manufacturing plants.

3. Excessive Noise

Noisy ductwork can disrupt operations and reduce comfort, particularly in environments like offices, healthcare facilities, and educational institutions. Issues such as poorly secured ducts, sharp bends, or turbulent airflow contribute to excessive noise, which can be distracting and frustrating for occupants.

How Custom Duct Fabrication Addresses These Problems

Custom duct fabrication solves these common challenges by providing tailored solutions that align with the unique requirements of your building and HVAC system. Here’s how:

Seamless, Leak-Free Design

Custom fabrication ensures that ductwork fits precisely, reducing or eliminating gaps and poorly sealed connections that lead to air leakage. At Tessiers, our sheet metal team fabricates ductwork to exceed SMACNA standards, using high-quality materials and precise techniques. The result? Tightly sealed systems that enhance efficiency and reduce energy waste.

Optimized Layouts for Balanced Airflow

Every building is different, and custom duct fabrication takes that into account. Our team designs ductwork layouts that maximize airflow and minimize energy use, ensuring all areas of your facility receive consistent heating, cooling, and ventilation. Whether it’s a small system or a large, complex network, Tessiers creates solutions that fit your specific needs.

Quiet Operation

Custom fabrication allows for smoother airflow and fewer disruptions, significantly reducing noise. By tailoring ductwork to avoid unnecessary bends, sharp turns, and improperly sized components, we create systems that operate quietly and efficiently. Additionally, we offer lined ducts and other noise-dampening options to further enhance comfort in noise-sensitive environments.

Custom Duct Fabrication Expertise

At Tessiers, we bring over 100 years of experience to every project, providing unmatched expertise in duct fabrication. Our facility is equipped with advanced tools and technology to handle projects of any size or complexity. Here’s what sets us apart:

Wide Range of Capabilities

Our sheet metal team fabricates ductwork for a variety of industries, including healthcare, education, manufacturing, energy, and government. We handle everything from small-scale systems to large, intricate networks, offering solutions such as:

• Rectangular, round, and oval ducts
• Spiral fittings 
• Welded and lined ducts
• Custom components

Collaborative Approach

Our shop and installation teams work closely together to ensure seamless project execution. By coordinating material delivery and installation schedules, we minimize disruptions and keep your project on track. This collaborative approach ensures that every piece of ductwork is ready when you need it, contributing to efficient project completion.

Conclusion

Ductwork problems like air leaks, inefficient layouts, and excessive noise can compromise the performance of your HVAC system and impact the comfort of your facility. With custom duct fabrication from Tessiers, you can address these challenges and achieve a system that’s efficient, reliable, and perfectly suited to your needs. From precise design to expert installation, we’re committed to delivering solutions that set your project up for success.

Contact Tessiers today to learn how our custom duct fabrication services can enhance your HVAC system and improve your facility’s performance.

Tessiers Successfully Installed 22 RTU Units with a Helicopter!

Recently, our Tessiers team was tasked with the safe and efficient installation of 22 RTU units, weighing between 650 and 2500 pounds, on a 330,000 square warehouse, located in Sioux Falls, SD. Our initial obstacles were identified: 150-foot reach from the building’s edge, and units spanning roughly 450 feet east to west and 250 feet north to south, and 42-foot-high walls.

Typically, such installations would involve the use of a crane. However, our experienced preconstruction team determined that using a rotorcraft would be more effective.

Safety was our top priority. Working alongside one another, the Operations Manager, Safety Director, Foreman, and Project Manager noted that the parapet wall was less than 42 inches and identified rooftop openings with drops exceeding 6 feet. To avoid potential falls and safely navigate across the rooftop we determined the best application for this task would be using two mobile fall protection devices (raptor carts).

Our foreman Robert Burns, noticed each cart would require a team of four, North Team and South two members to move the cart and two to place each unit and disassemble the rigging. The roof top navigation plan was put on paper.

The night prior to the pick, a plan pre-task session was conducted by Tessiers with the GC, and all operation leaders. Tessiers ensured our safety plan would be enforced, and the job site was prepped, and all hazards have been addressed. We discussed procedures and identified additional hazards. The signalers played crucial roles in directing the helicopter and providing communication with the pilot and our team members.

Having identified potential hazards and implemented safety measures, we proceeded with the pick plan early the next morning. Tessiers took control

of the job site, blocking access to the building, setting up extraction points, distributing personal protective equipment (PPE), and staging the units. A final review of the pick plan was conducted with the collective staff.

As an audience gathered outside the protected zone, our plan was implemented. Our rooftop team efficiently moved across the building while the ground team prepared for the next pick. Each member was vital to ensure the operation was completed seamlessly. We were able to set each unit in under three minutes.

Addressing all aspects of safety, communication and preplanning by our team made this task a success.

Welding is more than just fusing pieces of metal together; it’s about precision, safety, and expertise. In commercial and industrial applications, choosing a welder with the right skills and certifications is crucial to ensuring the quality and longevity of a project. Specialty welding certifications and skills are indicators of a welder’s expertise and ability to meet rigorous industry standards. In this post, we’ll explore some common types of specialty welding certifications and capabilities, giving you insight into what sets top-notch welders apart.

Specialty Welding Certifications

1. AWS Certified Welders

One of the most recognized certifications in the welding industry is the American Welding Society (AWS) certification. AWS-certified welders have passed tests that demonstrate their skills in various welding processes, including MIG (Metal Inert Gas), TIG (Tungsten Inert Gas), and stick welding. This certification ensures that the welder meets industry standards for quality and safety, making them a reliable choice for complex projects.

Whether it’s a structural steel project or intricate metalwork, having an AWS certification guarantees the welder is knowledgeable about the latest techniques and able to produce consistent, high-quality results.

2. GMAW, SMAW & FCAW Certified Welders

Three commonly used welding techniques are GMAW, SMAW, and FCAW, and specialized welding certifications are often required for each:

• GMAW (Gas Metal Arc Welding): Also known as MIG welding, this process uses a continuously fed wire to create a strong, consistent weld. It’s widely used in industries requiring speed and precision, such as automotive and manufacturing.
• SMAW (Shielded Metal Arc Welding): Known as stick welding, this traditional method is valued for its simplicity and versatility. It’s often used in construction and repair work, especially in outdoor or confined spaces where portability is essential.
• FCAW (Flux-Cored Arc Welding): Similar to GMAW, FCAW uses a flux-filled electrode, making it ideal for welding thicker materials or in challenging outdoor environments where wind might be an issue.

Having certifications in these techniques indicates that the welder can handle a range of materials and projects with specialized needs.

3. OSHA 10 & OSHA 30 Certified Staff

Safety is a top priority in any industrial setting, and certifications like OSHA 10 and OSHA 30 are crucial for ensuring job site safety. OSHA (Occupational Safety and Health Administration) certifications involve training programs that educate workers about identifying hazards, preventing accidents, and maintaining safe work practices.

• OSHA 10: A 10-hour training program focused on the basics of workplace safety, suitable for entry-level workers.
• OSHA 30: A more comprehensive 30-hour program aimed at supervisors and workers with safety responsibilities, covering a broader range of hazards and safety procedures.

Welders with these certifications are not only skilled in their craft but also well-versed in maintaining a safe working environment.

Welding Specialties and Capabilities

1. Confined Space Welders

Working in confined spaces presents unique challenges, from limited visibility to restricted movement. Confined space welders are trained to handle these environments safely and effectively. They undergo specialized training to manage the hazards associated with small or enclosed spaces, ensuring that they can work on projects in tanks, vessels, or tight structural spaces without compromising safety.

2. On-Site Welding Services

For many projects, on-site welding services are a necessity. Having a team of welders who can travel to your location and perform the necessary work can save time and costs associated with transporting materials. On-site welders are adaptable, capable of handling a variety of conditions, and prepared to address unexpected challenges that might arise during installation or repair.

3. Pulse Welding

Pulse welding is an advanced technique used to control the heat input during welding. By pulsing the current on and off, welders can produce cleaner, stronger welds with less spatter and distortion. This method is ideal for thin materials, aluminum, and other metals that are prone to warping or cracking. Welders skilled in pulse welding are highly sought after for projects requiring precision and a clean finish.

4. Structural Welding

Structural welding involves the fabrication and repair of structures like bridges, buildings, and heavy equipment. It requires a deep understanding of load-bearing capacities, material properties, and construction standards. Structural welders must adhere to strict guidelines to ensure the safety and stability of the structures they work on. Certifications in structural welding ensure that the welder is competent in handling large-scale projects that demand both expertise and accountability.

Why Certifications and Specialties Matter

Hiring a certified and specialized welder can make a significant difference in the success of a project. Certification ensures that the welder has met industry standards and possesses the technical skills required for the job. Specialties, such as confined space welding or pulse welding, add another layer of expertise, demonstrating the welder’s ability to handle complex or unusual projects.

For property managers, industrial facilities, or anyone responsible for overseeing construction and repair projects, understanding these certifications and specialties can guide you in selecting the right professionals for the job. Choosing a certified welder means investing in safety, quality, and long-term value.

Choose the Right Certified Welders 

Welding certifications and specialties are more than just credentials—they’re a testament to a welder’s dedication to quality, safety, and excellence. From AWS and OSHA certifications to specialized skills like pulse welding and structural welding, these qualifications ensure that welders can meet the demands of any project. Whether you’re in need of on-site services or a quick turnaround on a custom order, partnering with certified professionals guarantees that your project will be handled with the utmost care and expertise.

By choosing welders with the right welding certifications and specialties, you can be confident in the quality of the work and the safety of the environment. For more information or to discuss your specific welding needs, feel free to reach out to the experts at Tessiers, where professionalism and quality craftsmanship are always our priority.

As a commercial property manager, you know how important it is to keep tenants and guests comfortable. Balancing heating and cooling can be tricky, especially with varying needs across different areas of a building. Factors like the number of occupants, heat from equipment, and insulation levels all affect how your HVAC system performs. It’s not just about setting a temperature; it’s about managing different needs and ensuring consistent comfort throughout the building. Efficient climate control is crucial for maintaining satisfaction and attracting tenants, making it essential to address these challenges effectively.

HVAC system zoning can help by dividing your building into different areas, each with temperature controls. This allows for more precise climate management, improves comfort, and can even reduce energy costs. For instance, the upper floors of an office building might need cooling while the lower floors stay warmer, and a computer lab may require extra cooling. Zoning helps ensure each area gets the exact temperature it needs.

How HVAC System Zoning Works

An HVAC zone control system uses thermostats, a central control panel, and zone dampers installed in the ductwork. Each zone has a thermostat that communicates with the control panel, which adjusts the dampers to regulate airflow. This setup allows each zone to control heating and cooling independently without affecting others. 

Commercial HVAC companies insert dampers into the ductwork to enable HVAC system zoning. These dampers isolate various parts of the building so that conditioned air cannot enter them. A satellite thermostat is included in each zone to adjust the local temperature without affecting the temperature elsewhere. 

For example, a zone with many computers requiring extra cooling will not influence the temperature in adjacent zones. This system is efficient, especially in buildings with varying temperature needs, as it targets only the areas in use, optimizing comfort and reducing energy consumption.

 Elements for HVAC System Zoning 

• Zone Dampers: Installed in the ductwork, these dampers open or close to direct airflow to specific zones, enhancing energy efficiency and temperature control.
• Thermostats: Each zone has a separate thermostat to monitor temperature and send data to the control panel, which adjusts the dampers and HVAC equipment accordingly.
• Control Panel: This is the system’s central unit, processing thermostat data to manage dampers and equipment, often with digital interfaces for setting preferences and schedules.
• Ductwork Modifications: Installing zoning may require changes to the ductwork, including additional dampers and bypass ducts for balanced airflow.
• Damper Actuators: These mechanisms control the dampers based on signals from the control panel, enabling precise temperature regulation.

Benefits of HVAC System Zoning

The benefits of a well-designed HVAC zoning system include focused, consistent heating and cooling, customized temperature control for better employee comfort, and significant energy and cost savings. Adjusting heating and cooling based on each zone’s specific needs can reduce energy waste and potentially lower costs by up to 25 percent.

• Energy Efficiency: HVAC System zoning allows you to heat or cool only the areas that need it, reducing energy consumption and lowering utility bills, especially in rooms that are not frequently used.
• Longer Equipment Lifespan: By preventing your HVAC system from working harder than necessary, zoning reduces wear and tear on the equipment, extending its life.
• Reduced Temperature Swings: Zoning eliminates large temperature fluctuations when a single system tries to balance multiple needs simultaneously.
• Targeted Temperatures: Zoning enables precise temperature control for different areas, such as providing extra cooling for heat-generating equipment without affecting other parts of the building.
• Increased Comfort: Personalized climate control means everyone can enjoy their preferred temperature, enhancing overall comfort.
• Improved Property Values: Modern zoning systems add appeal to your property, making it more attractive to potential buyers or tenants due to the enhanced comfort and energy efficiency they offer.

Considerations When Planning a Commercial Zoning System

Careful planning and design are essential to maximizing the benefits of a commercial HVAC zoning system. Keep individual zones manageable—ideally, no larger than a single floor or a few rooms. Zoning systems are less effective in open spaces or areas with frequent temperature changes, like warehouses or spaces with open doors. Place thermostats in each zone’s most frequently used room to ensure accurate temperature control. Group rooms with similar energy efficiency features and thermal characteristics within the same zone for optimal HVAC performance.

While a zoning system offers many benefits, there are some potential drawbacks. One is the higher initial cost of installation compared to traditional HVAC systems. Setting up an HVAC zoning system can also be more complex, often requiring professional expertise and additional installation steps. Regular upkeep is important to address any issues that may arise, and it’s best to work with experienced technicians to keep the system running smoothly.

Adding HVAC System Zoning To An Existing System

Before considering HVAC system zoning, evaluate your existing system’s readiness. Ensure your HVAC equipment is modern and robust enough to handle zoning, and check if your ductwork can accommodate it with minimal modifications. An HVAC specialist can evaluate your setup and recommend a suitable zoning plan based on your building’s layout, sun exposure, and usage. Installation typically involves adding zone dampers to direct airflow, equipping each zone with a thermostat, upgrading the central control panel, and fine-tuning the system to ensure proper operation.

For property managers, weighing the investment against potential returns is essential. While zoning can improve energy efficiency and tenant satisfaction, it also involves initial costs and possible disruptions. Plan for downtime during installation and be prepared for increased maintenance needs due to the added complexity. Working closely with HVAC professionals will help ensure that HVAC system zoning enhances your system’s performance and aligns with your property’s needs.

Enhance Your Building With HVAC System Zoning 

HVAC zoning enhances comfort, energy efficiency, and cost savings by allowing tailored temperature control in different areas. Although it involves a higher initial investment and added complexity, the benefits can be significant depending on your property’s needs and layout. 

For personalized advice, and to explore how zoning can optimize your HVAC system, contact Tessiers. Our experienced team offers expert guidance, cutting-edge installation, and dedicated commercial HVAC service from start to finish. We’re here to provide the best solutions for your facility’s heating and cooling needs. Request a quote today to get started!

As a property manager or rental property owner, you put considerable time and investment into maintaining your properties. Imagine this: a tiny spark ignites, and before you know it, your property is engulfed in flames, putting lives at risk and causing massive damage. Scary, right? That’s why fire prevention is so important. We’re not just talking about checking boxes here; we’re talking about protecting tenants and your investment from potential disaster. 

One potential and often overlooked cause of residential fires is your HVAC systems. This is especially important for landlords and property managers. So, let’s dive into how we can prevent HVAC fires and AC unit fires and keep your properties safe and sound!

Landlord Responsibility to Prevent Fires  

Landlords and property managers must stay vigilant about fire safety regulations, identifying and mitigating fire hazards promptly. By prioritizing tenant safety and adhering to fire codes outlined by the NFPA, managers can safeguard their multifamily properties, occupants, and business interests effectively. 

Some things to consider include: 

• Sprinkler Systems
• Fire Alarms and Smoke Detectors
• Fire Extinguishers
• Tenant and Staff Education
• HVAC Maintenance

 Residential HVAC Fire Risks 

It’s no secret that your HVAC system plays an important role in maintaining a comfortable and safe environment in your home, especially this time of year. There is nothing more refreshing than air conditioning on a hot summer day, but that cool air can turn hot fast if you’re not properly maintaining your unit. 

According to the U.S. Fire Administration, “each year in the United States, an average of 2,300 air conditioning fires occur in residential structures. These fires are responsible for approximately 60 civilian injuries, less than 5 civilian deaths, and $23.8 million in property loss.”

 Causes of AC Unit Fires

• Flammable Materials 
• Dirty HVAC Unit 
• Insufficient Lubrication 
• Broken Parts 
• Faulty Wiring 

Portable AC Unit Fires 

The U.S. Fire Administration reports that 35% of installed AC units are either portable or fixed local units, yet these account for 55% of all AC unit fires. This statistic underscores a significant safety concern associated with these types of units. While they offer convenience and flexibility, their higher incidence of fires raises questions about their design, installation, and maintenance.

Preventing AC Unit Fires

HVAC fires pose serious risks, but preventive measures can safeguard your tenants and property. Professional installation, whether for portable, fixed, or central units, is very important, especially in hot climates and during hot weather when AC units are under increased strain. 

Avoid using extension cords and ensure proper cord placement to prevent overheating and contact with flammable materials. Avoid placing cords under carpets or allowing debris to accumulate, as overheating can lead to ignition. Ensuring clean filters, functional thermostats, and up-to-date electrical components is critical.

Regular Maintenance Of HVAC Systems For Fire Safety

Regular preventative maintenance of HVAC equipment is the first step in managing the risk of HVAC fires in any building. To prolong the lifespan of your unit, HVAC professionals will make sure that the ducts and filters are clean and will solve problems as soon as they arise. Setting aside time for biannual unit maintenance can help your unit last longer and keep your family and house safe.

 Integration of HVAC and Fire Protection Systems

 Proper alignment of fire alarms and HVAC systems is crucial for occupant safety and operational efficiency, significantly impacting life and property protection during emergencies. Integrating them offers several benefits:

• Enhanced Safety: Automated shutdown of HVAC systems when the fire alarm is activated prevents smoke and fire spread, safeguarding occupants.
• Improved Energy Efficiency: In the absence of fire alarm activation, HVAC systems adjust settings to conserve energy.
• Simplified Maintenance: Integration streamlines maintenance by combining fire alarm and HVAC systems, enhancing overall system efficiency and reliability.

Fire dampers, wraps, and stopping are vital for HVAC fire protection, enhancing building resilience against fires. Dampers automatically close to contain fire and smoke in ducts, while wraps delay heat penetration. Fire stopping seals gaps, preventing fire spread. Integration with alarms and sprinklers ensures efficient evacuation. Incorporating fire-resistant materials in HVAC design strengthens building safety.

How to Integrate Fire Alarm and HVAC Systems

Whether you’re building a new property or updating an existing building, integrating fire alarms with HVAC systems is a key step for safety. Landlords should work closely with engineers and contractors to ensure a safe and effective set up that complies with local and national codes. 

Here are the key steps for successful integration. You’ll want to work with seasoned professionals to complete these steps. 

1. Ensure Compatibility: Check if both systems will work together 
2. Identify Interdependencies: Understand how they react to triggers from each other
3. Develop An Integration Plan: Detail system configuration, wiring, testing, and maintenance
4. Install Needed Components: Hire qualified professionals to install the systems 

Test and Verify: Finally, test integration for proper functionality

Reducing Risk of HVAC and AC Unit Fires

Prioritize fire prevention in your residential properties and you’ll reduce the risk of HVAC and AC unit fires. As a landlord or property manager, you can protect lives and your investment by following the recommendations in this blog post. These include conducting regular maintenance, integrating fire alarm systems with HVAC units, collaborating with HVAC professionals, following NFPA guidelines, and staying vigilant against fire hazards.