(303) 872-8965

About Us

About Controlling Systems


Everyone at Controlling Systems has one mission…..exceeding your expectations!

Our Company

Founded in 1976, we have decades of experience helping our customers to reduce their energy usage while increasing their comfort.

As a premier HVAC service contractor we have expertise in the installation, preventative maintenance and servicing of all heating, air conditioning, hot water heater and IAQ products*. In addition, we also offer boiler repair and replacement.

What Sets Us Apart

Our biggest advantage over the competition…….Our people! From the office staff to the field techs, simply put…the best in the business!

We have an A+ rating with the Better Business Bureau, check it out at http://denver.bbb.org/

BBB Accredited Business

We service and install all major manufactures equipment.

We offer many different financing options so we know we have the right program for you.

5% discount for military and seniors

Our techs are N.A.T.E. Certified, Factory Certified, ICC, and EPA Licensed so you know they are the best in the industry.

We are an independent, local owned business, and you know that most of your comfort dollars are staying right here in the Denver community. If you aren’t satisfied with any of our services, our President Bill East will personally accept your call and find a solution to your issue.

*IAQ products – thermostats, air cleaner/filtration, humidification and ventilation

About Controlling Systems Installation