Denver’s Premier Heating and Cooling Experts Since 1976

Residential and Commercial Heating, Air Conditioning, Indoor Air Quality, and More

Denver’s Premier Heating and Cooling Experts Since 1976

Residential and Commercial Heating, Air Conditioning, Indoor Air Quality, and More

Heating

With Controlling Systems, your heating
needs will be taken care of. You can be sure
that we will provide detail-oriented, honest work
and that your home will be cozy and comfortable.

Cooling

Controlling Systems Heating & Air Conditioning
is your #1 HVAC contractor in the Denver, CO,
community. We are the leading company for all
of your air conditioning needs. Find out how we can
help you beat the Colorado heat today!

Indoor Air Quality

Keeping your home safe and comfortable
is a priority for Controlling Systems Heating
& Air Conditioning. Our staff is always happy to
discuss anything about your home's indoor air quality.

Truck-RUUD

About Us

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

At Controlling Systems Heating & Air Conditioning, we pride ourselves on being Denver's #1 premier HVAC contractor, as well as being a Ruud Pro Partner. This means we have extensive knowledge in installing, repairing, and maintaining Ruud heating and cooling equipment.

Furthermore, we have expertise in the installation, preventative maintenance, and servicing of all heating, air conditioning, and indoor air quality products from all major HVAC brands.

ALWAYS Polite, professional, friendly

The heat went out at my mothers house. I called the people who installed it initially. Then called Controlling Systems. The had a technician out and it was repaired before I got a call back from the first company. Service is ALWAYS Polite, professional, friendly (big plus in my book) and efficient. Just the way I like it.
Tomoko K.

I would highly recommend this company.

Two installers were sent the day of installation. They were both courteous and professional! They arrived on time and immediately dismantled the old system and prepared the space for the new system! They were very efficient and worked well together as a team. Following the completion of their work, they ran the furnace and explained the functions of the thermostat in great detail!

I want to thank both Gemini and Roman for their attention to detail, answering our endless questions, and removing all remnants of their work! I would highly recommend this company and these two employees!

EJ R.

Very professional

Very professional! Have used Controlling Systems for the past few years for swamp cooler start up and shut down. This time the installed a Halo water system. So far very happy with the system and continue to use their team for future needs!

Suzanne M.

Recommend Controlling Systems

The two men that came out to install my AC/Furnace did an excellent job. They were on time, they were courteous, and always kept me in the loop as to what they were doing. Before leaving my home, they tested everything and made sure to walk me through how everything worked. I would highly recommend Controlling Systems to anyone in need of HVAC. Thank you!

Cyndi M

WHAT ARE
THEY SAYING
ABOUT US?

Read More

Service was top-quality in every respect.

Scheduled maintenance on furnace. Technician was on time, very competent and went out of his way to explain everything he was doing. He made sure the service call was covered under our maintenance contract. Service was top-quality in every respect.

Chip B.

Professional, on time, great communication.

Great Job! I have a hot water/boiler heat system that gave us a mind bending problem! Not always easy to fix residential repair people that know what they are doing. Shout out to Gus and Arius for all that they did to problem solve and fix the issue. Professional, on time, great communication. I would recommend! I know I will call them in he future!

Jill L.

HVAC maintenance

“Technician was early with a badge on his shirt identifying him as a technician with Controlling Systems. Polite, efficient, pleasant and knowledgeable! Advised on future HVAC maintenance. I highly recommend Controlling Systems and have used them for many years and will continue to do so!!

Kathy N.

Showed up on time

From the moment I called to set up my appointment to the in-person visit to winterize my swamp cooler, I received outstanding service. The technicians showed up on time, were totally respectful of our home, answered all my questions, and were very friendly. I thought the service was priced very fairly and that I got a great value.

Kari K.

what are they saying about us?

I would highly recommend this company.

Two installers were sent the day of installation. They were both courteous and professional! They arrived on time and immediately dismantled the old system and prepared the space for the new system! They were very efficient and worked well together as a team. Following the completion of their work, they ran the furnace and explained the functions of the thermostat in great detail!

I want to thank both Gemini and Roman for their attention to detail, answering our endless questions, and removing all remnants of their work! I would highly recommend this company and these two employees!

EJ R.

Recommend Controlling Systems

The two men that came out to install my AC/Furnace did an excellent job. They were on time, they were courteous, and always kept me in the loop as to what they were doing. Before leaving my home, they tested everything and made sure to walk me through how everything worked. I would highly recommend Controlling Systems to anyone in need of HVAC. Thank you!

Cyndi M

Service was top-quality in every respect.

Scheduled maintenance on furnace. Technician was on time, very competent and went out of his way to explain everything he was doing. He made sure the service call was covered under our maintenance contract. Service was top-quality in every respect.

Chip B.

Proudly Serving Denver and Surrounding Cities

COS-Synchrony-Logos

We Have Financing Options Available

We partner with Synchrony, one of the nation’s premier consumer financial services companies. Expand your purchasing power with Promotional Financing through Synchrony.

Read Our Latest Articles

Service Industry: Work tools on air conditioners. Outside residential home.

Why Do I Need AC Maintenance Now?

April 8, 2021

An air conditioner (AC), just like a car, needs regular maintenance and service to run efficiently. At Controlling Systems Heating & Air Conditioning, we recommend getting your air conditioning unit serviced and cleaned at least once a year. The optimum time is in the spring to ensure your system will run with the most efficiency during the hottest summer months. You need to be able to rely on your air conditioner for your comfort here in Denver.

Read More
water heater leaking

Video – What Should I Do If My Water Heater Is Leaking?

March 30, 2021

Is your water heater leaking? Here’s what you need to do: First, find the location of the leak. This will be helpful for you and your service technician. Turn off the power supply by switching the water heater circuit breaker to “off” for an electric water heater or by turning the dial to “off” on a gas water heater. Next, turn off the cold water supply to avoid more water being wasted from the leak. Call us today at (303) 762-1421 to have your water heater repaired or replaced.

Read More
man inspecting ceiling vent

Listen to Your HVAC System

March 15, 2021

Unusual sounds may indicate the need for a tune-up, cleaning, or repair. The experts at Controlling Systems can decipher the noise and get your system back on track. They have the knowledge and experience it takes to keep your HVAC equipment running at peak efficiency and delivering the comfort you expect in your Aurora home.

Read More