(303) 872-8965

We stock and install Rheem equipment and are a Rheem Pro Partner®. At Controlling Systems, we're home comfort professionals.

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Controlling Systems Heating & Air Conditioning offers many specials all year round! Please check our specials to see if any apply to your needs.


Rheem Financing through GreenSky makes it quick, easy and safe to apply online for your next Denver HVAC project.

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Located in Denver - Controlling Systems has been serving Colorado 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 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