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Commercial RTU Repair and Installation in St. Cloud
Rooftop HVAC units (RTUs) — also known as packaged rooftop units — are the ideal solution for commercial buildings that need powerful, energy-efficient heating and cooling without taking up valuable indoor space. Installed on the roof, these self-contained systems combine supply and return air components in one streamlined design, providing clean, quiet comfort while allowing easy access for maintenance and repair.
RTUs are a favorite choice for offices, restaurants, retail centers, schools, warehouses, and industrial facilities across St. Cloud and Central Minnesota. They make it easy to zone temperature control, giving businesses the flexibility to customize comfort for different areas of the building — reducing energy waste, improving air quality, and maintaining consistent performance year-round.
Whether you’re planning to install a new rooftop unit or need professional RTU repair and maintenance, turn to Air Max Heating, Air Conditioning & Refrigeration. With over a decade of experience, our certified team has helped Minnesota businesses enjoy dependable, energy-efficient climate control using trusted brands like Trane, Carrier, Lennox, Daikin, Mitsubishi, and Honeywell.
Our experts specialize in all aspects of commercial rooftop HVAC systems — from return air balancing and zoning design to full RTU replacements. Every project is handled with precision, safety, and long-term efficiency in mind.
📞 Contact Air Max today for a free estimate on your commercial rooftop HVAC installation, service, or replacement — and discover why business owners across St. Cloud trust us for lasting performance and professional results.
Common Problems with RTUs
If your RTU is showing signs of problems, contact us right away. Our technicians can work quickly to mitigate damage to it or your roof, diagnose the problem, and provide a solution that can make the issue a thing of the past.
We can address problems with:
- Dirty coils
- A malfunctioning thermostat
- Air balance
- Refrigerant leaks
- Excessive condensation and water damage
- Unexpected noises coming from your unit
- Tripped breakers or blown fuses
- Unusual odors coming from vents
- Inconsistent temperatures
- Changes in humidity
- Unexplained rises in energy costs
- Dirty or damaged filters
We Service the Top Brands
At Air Max Heating, Air Conditioning & Refrigeration, we are the leading provider of commercial rooftop unit (RTU) repairs, installations, and maintenance in St. Cloud and Central Minnesota. With over a decade of hands-on experience, we deliver superior service for top industry brands including Daikin, Lennox, Carrier, Mitsubishi, Honeywell, and we’re proud to be a certified Trane Comfort Specialist.
Our trained professionals are fully equipped to service all major makes and models, ensuring your system operates at peak performance year-round. When you call Air Max, there’s never a question about whether we’re the right contractors for the job — we combine technical expertise, brand-certified training, and industry insight backed by trusted resources like ACHR News, Contracting Business, and Facility Executive.
We also stay ahead of new technologies and standards highlighted by organizations such as Business Facilities, RAVTI, and Eco Home Solutions — helping our commercial clients save energy, reduce downtime, and extend equipment life.
At Air Max, we don’t send rookies to the work site — only experienced, certified technicians who take pride in their craftsmanship and customer care. Choosing us means getting maximum performance, reliability, and long-term value for your commercial HVAC investment.
For emergency services or routine repairs, call (320) 252-5602 or contact us online.
RTU Emergency? Call Us!
If your commercial rooftop unit (RTU) suddenly stops heating or cooling, don’t wait — call Air Max Heating, Air Conditioning & Refrigeration right away. We provide emergency RTU repair in St. Cloud and the surrounding Central Minnesota area, ensuring your business stays comfortable and operational no matter the weather.
Our experienced technicians respond quickly to diagnose the issue and schedule service at a time convenient for your business operations. We understand that a malfunctioning RTU can affect employee comfort, customer experience, and even product safety — which is why we work with speed, precision, and minimal disruption to restore your system fast.
Whether it’s a Daikin, Carrier, Lennox, Mitsubishi, Trane, or Honeywell unit, we have the expertise to get it running efficiently again. Each repair includes a full performance inspection, so you can avoid repeat breakdowns and maximize your equipment’s lifespan.
There’s a reason business owners across St. Cloud trust Air Max for commercial RTU repairs, maintenance, and replacement. We’ve helped retail centers, restaurants, medical offices, and warehouses stay comfortable and energy-efficient year-round.
Need Immediate Assistance?
Our team is ready to offer emergency service for times when your HVAC system breaks down unexpectedly. Get in contact us with us for help.
