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Controlling Systems Inc

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389 reviews
|Heating & Air Conditioning/HVAC|Denver, CO 80221

7000 North Broadway, Ste 1, Denver, CO 80221

(303) 762-1421

Open now:9:00 am - 6:00 pm


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Controlling Systems specializes in the installation, repair and maintenance of your homes - furnace, air conditioner or evaporative cooler, water heater and indoor air quality devices such as humidifier, air filter and thermostat. Even more than that we specialize in superior customer service.

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389 reviews
80 reviews have no rating
  • 309 Reviews4.8Google
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5 results available.
Cyclon3 G. on Citysearch

6 years ago

02/26/2015, 01:33 AM
Controlling Systems sent Sean, who was very nice and knowledgeable. We had a great conversation, even a little small talk about music. I expressed interest in zone heating, and instead of just trying to sell me on the considerably greater expense and work, he explained it would not be the best thing when considering installation and long-term cost-to-benefit. The company gave us a bid for both a repair and a new furnace, even adding some additional info at my request to submit to my home warranty company, then Sean called to explain it very patiently, and then followed up today (a few weeks since we last discussed the new furnace). While I may revise my input pending any major work they do, I couldn't be happier with the way we've been treated.
Teamlink D. on Citysearch

6 years ago

02/12/2015, 00:28 AM
Saul and Grant did a great job. The job was completed before I expected and both on time and very curtious.
Heidi B. on Citysearch

6 years ago

02/06/2015, 03:49 AM
I had Controlling Systems do a bunch of ductwork in my basement (reconnecting and sealing supply and return ducts, furnace work) and add a new return vent in a bedroom. They (Gus) came out the same day I called them and scheduled the work for the next day. Kevin & ?? were very professional and did a great job. Now, my house has a more consistent temperature throughout. The price was very reasonable for the amount of work & time involved. After they left, I noticed a couple things they missed and they came right back out to fix them at no charge. I would definitely recommend Controlling Systems for HVAC work.
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Rocksteady E. on Citysearch

6 years ago

01/30/2015, 03:56 AM
I would be more than happy to act as a referral at any time!!! I've had 3 other companies out and they don't come anywhere close to yours!!
EverythingYou F. on Citysearch

6 years ago

01/23/2015, 02:17 AM
Controlling Systems is an awesome company. 5 years ago they were to install a furnace but on the day of instillation they did not have to specific furnace so they upgraded the furnace. While my house was on the market I called to check the warranty and Brent had the information readily available. Since it was very cold I asked if he would go to check the furnace. Within a very few hours he had found that the igniter on the furnace was defective and replaced it. The warranty was still in effect! What a blessing and he saved a major freeze inside the house. I cannot give enough praise to Brent and Controlling Systems.
Voyage447 A. on Citysearch

6 years ago

01/13/2015, 00:33 AM
I used Controlling Systems because of their good Yelp ratings. They were good. I had to wait a bit for the appointment because they were so busy, but it was worth it. They called the day before to confirm. I got a tech named Gus. He was knowledgeable and he explained why I needed more refrigerant and explained why he didn't think my system has a leak. He explained the cost upfront. The cost was about what I expected or maybe less. AC works great now. I will use them next time I need AC or Heating work for sure.
sugarbee:) R. on Citysearch

6 years ago

01/02/2015, 01:29 AM
We have used Controlling Systems for a number of years for our heating and A/C systems with good result. Our system had a problem and was difficult to fix. We have an older home with older wiring. After a stumble, Controlling Systems came through again! They worked hard and long, fixed the problem at a fair price.
Oi C. on Citysearch

6 years ago

12/23/2014, 00:17 AM
Steve and Donny did a fantastic job.
Fern G. on Citysearch

7 years ago

12/12/2014, 01:56 AM
Controlling Systems was able to come out the same week I called to service both my AC and furnace. Their prices for service are reasonable and the Yelp deal I purchased made it even more affordable. They even replaced the filters for me at no additional charge. I'd recommend them and use them again.
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