Commercial HVAC Services Denver

Serving The Denver Metro For Over 55 Years

Headquarters Building

Who We Are

We have been performing commercial HVAC services in Denver, CO for over 55 years! We pride ourselves on being able to work on all makes and models of heating and cooling equipment and are available 24/7 to perform emergency repairs. As a locally owned family-run business, we employ the best technicians in the industry to ensure we can handle all of your heating, ventilation, and air conditioning needs in the Denver metro area.

Contact Us

Address: 15335 E. Fremont Dr. Centennial, CO 80112
Main: 303-292-1113
24/7 Service Line: 1-800-237-3141
Email: rockymountain@rasmech.com
Office Hours: Monday – Friday: 7:00am – 4:00pm

Local Reviews

5 Star Review Image

“For all of my company’s boiler needs, I won’t go anywhere else. George, Gus, Carrie, they have all the connections that I will ever need, from boilers to automation controls.”
Dale Meyer, Stranahan’s Whiskey Distillery & Cocktail Bar

“Stacey and Aaron have been awesome. Great to work with and really  exceptional with resolving issues. I have a 100 confidence with your team. St Julien has found a vendor of choice.”
Ron Gallion, St Julien Hotel & Spa

HVAC Services We Provide in Denver

✔Commercial HVAC Repair

Expert Denver commercial HVAC repair services for all makes and models, including diagnostics, troubleshooting, and quick fixes to minimize downtime and restore efficient operation in your facility.

✔Complete HVAC Replacements

Full system replacements with build options tailored to your facility’s needs and budget.

✔HVAC System Maintenance

Preventative maintenance, capacity checks and adjustments, and emergency repairs.

✔Boiler And Furnace Service

Repairs, maintenance, and installation of boilers, furnaces, and hot water systems.

✔Indoor Air Quality Solutions

Air filtration, ventilation, humidity control, and thermostat upgrades.

✔Chiller and Cooling Tower Services

Service and maintenance for major heating and cooling systems.

✔Rooftop Unit Installations

Installing new HVAC systems and replacing existing rooftop units.

✔Building Automation Systems

Advanced building automation systems installation, integration, and optimization for energy-efficient control, remote monitoring, and seamless HVAC management in Denver commercial spaces.

✔Commercial Heating Solutions

We have expertise with Trane systems, heat pumps, and other leading brands, delivering reliable Denver commercial heating services including repairs, installations, and upgrades to ensure year-round comfort and efficiency.

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Why Choose Us for Denver Commercial HVAC Services

Rasmussen Mechanical Services is Denver’s trusted commercial HVAC service provider with over 55 years of experience in HVAC repair, maintenance, and installation. We specialize in servicing all major HVAC brands and equipment—including chillers, rooftop units, air handling units, and building automation systems. Our team delivers energy-efficient HVAC solutions, custom sheet metal fabrication, and expert project management. We ensure regulatory compliance while improving indoor air quality and system performance across Colorado and the Midwest.

  • Serving Denver since 1970
  • 3rd Generation Family Owned Business
  • 24/7 Emergency Service
  • Most Experienced Technicians In The Industry
  • NATE-Certified Specialists

Serving Denver Metro Areas: Centennial, Aurora, Lakewood, Westminster, Littleton, Englewood, Boulder, and Surrounding Communities

Common Commercial HVAC Problems to Watch For

  • Leaking refrigerant, which reduces cooling efficiency and increases energy bills.
  • Dirty condenser coils that hinder heat transfer and strain the system.
  • Clogged drains leading to water damage or mold growth.
  • Unusual noises like rattling or buzzing, indicating loose parts or mechanical issues.
  • Dirty filters that restrict airflow, lowering indoor air quality and system performance.

If you notice these in your Denver facility, contact us immediately for expert diagnosis and repair.

We Can Help

Proper maintenance is crucial for optimal performance of HVAC systems, and we are committed to providing regular professional upkeep in Denver. We put customer satisfaction first and have extensive experience in managing installations for complex commercial setups. This includes manufacturing facilities, office buildings, retail spaces, data centers, hospitals, and educational institutions. We also specialize in new construction HVAC projects, ensuring energy-efficient designs tailored to Denver’s climate.

What is Commercial HVAC?

Commercial HVAC systems are designed to provide heating, ventilation, and air conditioning for large-scale buildings like offices, retail spaces, hospitals, and manufacturing facilities in Denver. Unlike residential systems, commercial HVAC is more complex, handling higher capacities and often incorporating advanced controls for energy efficiency. These systems maintain comfortable indoor environments year-round, regulating temperature, humidity, and air quality to support business operations and occupant health.

How Does a Commercial HVAC System Work?

A commercial HVAC system works by circulating conditioned air through ductwork or other distribution methods. Heating components, such as boilers or furnaces, generate warmth, while cooling elements like chillers or rooftop units remove heat using refrigerants. Ventilation ensures fresh air exchange and filtration to remove contaminants. Advanced systems in Denver often include building automation for precise control, reducing energy costs and minimizing downtime.

Indoor Air Quality in Commercial Spaces

Indoor air quality (IAQ) is a vital consideration for any business relying on commercial HVAC systems. The quality of indoor air in commercial spaces directly affects the health, comfort, and productivity of everyone inside. Factors such as ventilation, temperature, and humidity all play a role in maintaining optimal IAQ. A well-designed commercial HVAC system incorporates advanced air filtration, humidity regulation, and effective ventilation to ensure a clean and comfortable environment. Our commercial HVAC specialists are equipped to assess your facility’s air quality, identify potential issues, and implement customized solutions tailored to your business needs. Regular maintenance and timely repair of commercial HVAC equipment are essential to sustaining high air quality, as neglected systems can lead to poor ventilation and increased contaminants. By prioritizing IAQ, businesses can foster a healthier workplace, enhance employee satisfaction, and support overall operational success.

The Benefits of Preventive Maintenance for Your HVAC System

Investing in preventive maintenance for your commercial HVAC system is one of the most effective ways to protect your business from unexpected repair bills and costly breakdowns. Regular maintenance performed by our commercial HVAC specialists ensures that your system operates at peak efficiency, minimizing downtime and extending the lifespan of your equipment. Our maintenance plans include inspections, filter changes, coil cleaning, and proactive repairs, all designed to catch potential issues before they escalate. Preventive maintenance not only improves energy efficiency and reduces operational costs but also enhances system reliability. In the Denver metro area, our team is dedicated to helping businesses maintain optimal performance and comfort through expert HVAC services. By choosing preventive maintenance, you can ensure your commercial HVAC system remains efficient, reliable, and ready to meet the demands of your facility year-round.