(303) 872-8965

We stock and install Rheem heating and air conditioning equipment and are a Rheem Pro Partner®.

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Winter is here and Controlling Systems Heating & Air Conditioning has heating specials to meet your home comfort needs.


Rheem Financing through GreenSky makes it quick, easy and safe to apply online for your next heating or air conditioning project.

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Located in Denver, Controlling Systems has been serving the Metro Denver area, including Arvada, Broomfield, Westminster, Thornton, Lakewood, Wheat Ridge and other suburbs since 1976. As a premier service contractor, we have expertise in providing heating, water heater, air conditioning and indoor air quality solutions. Our primary goal is your Satisfaction! In addition, we also have experience in boiler repair and replacement. We are a professional organization which takes pride in providing comprehensive heating and cooling solutions, no matter the size or scope of the job.

Our heating and air conditioning technicians are certified by N.A.T.E., Rinnai, OSHA, ICC, EPA and we are an Accredited Business of the Denver/Boulder Better Business Bureau. We service all brands and take pride in our work!

Our Experience Shows! Our installations are the best in Denver.

Our installers are always guaranteed to be courteous, professional, and clean. You can count on us to get the job done quickly, and much more importantly, correctly, the first time.

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  • Rheem Reseller
  • NATE North American Technician Excellence
  • Honeywell
  • Aprilaire
  • Energy Star
  • BBB Accredited Business