About Us

Experienced HVAC Cleaning and Maintenance

commercial hvac maintenenance workers with safety vests and mountain backgrounds.

Our founder and President, Bill Lundquist, was one of the first people in the country to pioneer innovative HVAC cleaning techniques, including the design of the first high-power vacuum system for air duct cleaning. 

Bill was a founding member of NADCA and served as President for three years. Later, he served as Chairman of the HVAC Cleaning and Restoration Standards Writing Committee for over 20 years. During that time, Bill’s committee published the ACR Standard which defines performance and procedural requirements for assessment, cleaning, and restoration of commercial HVAC systems throughout the country.

In 1989, Bill started Monster Vac, one of the first air duct cleaning companies in the United States. During his 30-years at helm of the company, Bill managed and oversaw hundreds of commercial projects throughout Colorado. After selling Monster Vac in 2019, Bill started COLORADO COMMERCIAL HVAC MAINTENANCE INC. to focus solely on the cleaning and maintenance of commercial HVAC systems. 

Today, Bill and his two sons operate the company backed by his extensive experience, innovative approach, and commitment to providing building owners and managers with the highest level of service in the market. If you’re looking for experienced HVAC cleaning and maintenance services, we hope you give us a call.

Why Partner With Us?

Industry-Standard Practices

We adhere to the latest standards from NADCA , ASHRAE and other recognized organizations, ensuring your system is cleaned, documented and restored correctly.

Customized Maintenance Strategy

We don’t believe in “one-size-fits-all.” We work with you to define inspection frequencies, cleaning intervals, system access planning and documentation so your HVAC system remains in optimum condition year after year.

Measurement & Documentation

We offer before/after photographs, airflow and pressure data (where applicable), cleaning reports and tailored recommendations so you can see and quantify the improvement.

Comprehensive Service for Commercial/ Industrial Facilities

We specialize in non-residential buildings — which means we understand the complexity of large air-handlers, elaborate duct networks, critical environments (such as data centers, hospitals or manufacturing) and regulatory/compliance demands.

Occupant-Centric Approach

Our work minimizes disruption, supports indoor-air-quality goals, and is performed with safety, cleanliness and occupant comfort in mind.

Energy-Focused & ROI-Driven

We know that building owners and facility managers are watching utility costs, sustainability metrics and lifecycle budgets. Our services deliver improvements that support those goals.

Over 40 Years of Experience with all Types of Buildings

Denver City Skyline with Office buildings

Commercial Office Buildings

Data Center HVAC system on a roof

Data centers​

Interior of Health Club free weight machines

Recreation Centers, Gyms, Health Clubs​

Industrial manufacturing building with skyline

Manufacturing & Industrial Facilities

Colorado University with flat irons in the back ground

Schools & Universities

Exterior of Emergency room with an awning

Hospitals & Medical Buildings

aerial image of outdoor retail area

Restaurants & Commercial Kitchens

Government building

Government Buildings & Civic Facilities

Any large non-residential facility with HVAC, ductwork, exhaust/fresh-air systems​