Emergency Service

We Provide Fast and Affordable Emergency Services

Call Us for an immediate response
(303) 762-1421

Heating & Cooling Services in Denver, CO: Residential & Commercial Heating, Air Conditioning, Indoor Air Quality & More


Get a Free On-Site Estimate

We have years of expertise in providing heating, water heater, air conditioning and indoor air quality solutions.

(303) 762-1421
As one of Denver’s premier HVAC service companies for more than four decades, Controlling Systems, Inc. has expertise in the installation, preventative maintenance, and servicing of all heating, air conditioning, and heat pump services. We specialize in both commercial and residential HVAC installation and services, and our heating and cooling services are unmatched in the Denver metro area. Whether you need residential or commercial work done at your property, our experienced heating and air conditioning repair contractors and HVAC contractors can tackle any size job.

Residential and Commercial Heating Services in Denver

At Controlling Systems, Inc., we provide residential and commercial heating and air conditioning services that improve our valued client’s lives. Since 1976, we have been one of the metro area’s most trusted HVAC installation companies. Our biggest advantage over other HVAC companies is our team’s dedication to excellent service! We are an independent, locally owned business, and you know that most of your hard earned dollars are staying right here in the Denver, to help other businesses and homeowners with HVAC repair and replacement.

Our Deals & Specials

Get Savings On Energy Systems Today!

Controlling Systems, Inc. offers coupons & discounts off your next energy system service.

Additionally, Xcel offers rebates on energy systems. Only registered contractors have the rebate applications and we’ve taken the time to get registered and approved. We will also take care of all the paperwork for you! Click to view our special offers.

Discounts & Rebates

Controlling Systems, Inc. is proud to be a Ruud Pro Partner

We have the most extensive knowledge in installing, repairing and maintaining Ruud equipment.

Financing Options Available


Expand your purchasing power with Promotional Financing through Synchrony.

We partner with Synchrony, one of the nation’s premier consumer financial services companies.

Learn More

Residential and Commercial Boiler and Furnace Repair in Denver

Thanks to the experts at Controlling Systems, Inc., furnace services don’t have to be a hassle in Denver. For more than four decades, our crew of professional and highly trained technicians is available to perform furnace repair and maintenance services for area homes and businesses. In the event that a furnace service repair isn’t possible, our team can also provide your building with premier furnace installation and replacement.

Controlling Systems, Inc. offers a free, no obligation, no pressure, in-home estimate whenever it is convenient for you.

Water Heater Services for Denver Homes and Businesses

When your water heating service breaks down at your Denver home or business, you could be in for trouble. Luckily, at Controlling Systems, Inc., we have heating contractors that have seen it all over their four decades plus of combined experience with HVAC replacement services. When the hot water heater on your property starts causing problems, it is important to get it fixed as soon as possible to ensure that you don’t worsen the potential damage.

Heating and Air Conditioning Services in Denver

At Controlling Systems, Inc., our heating and air conditioning services are designed to take care of your heating and cooling needs. We help to keep your systems in top condition with premier air conditioning repair so that you never run out of hot water or cool air at your Denver area property. We work with heating and cooling systems of all kinds, even evaporative coolers and ductless mini-split air conditioners. You can trust our heating and air conditioning repair contractors to take care of all heating and cooling services, allowing you to sit back and relax.


Call Controlling Systems, Inc. in Denver Today!

Founded in 1976, we are a leading choice in the Denver metro area for HVAC repair. We strive to help our customers to reduce their energy costs and usage while increasing the level of comfort in their home or business. Whether you are looking for furnace and ac repair or installation services, you can trust your system in the hands of our capable technicians.