HVAC reviews in Denver, Colorado

Bryan was awesome and he knows his stuff. Great workmanship and outstanding customer service!

I give high praise to Controlling Systems. They have great customer service all around. I had 3 properties to schedule and one phone call is all that was needed. They coordinated with my tenants and called back with a date and times for the appointments.

On the day of service, Izzy went over and beyond to help me with all the properties. He was thorough, efficient and really helped to make my systems better than he found them. He is a superstar and I hope he can come back out to help me again in the fall.

I’ve used Controlling Systems for five years now and they’ve done two major installations. I’m very pleased. They stand behind their work and all of their technicians have been excellent.

Excellent service the technician was able to get my hvac up and running the same day. Wonderful employees to work with

Exceptional service. Isidoro was punctual, had great communication before and during the service visit, and managed to fix my heating system within hours after I made an appointment. When I ran into another HVAC problem after business hours, he offered to return to my house in the evening and fixed the issue quickly. I highly recommend Controlling Systems to anyone in the Denver area.

Called Controlling Systems this morning when my furnace would not fire. They sent a technician, Chuck, over and he arrived about 3 hours later, and he was even 30 minutes early. He checked out my furnace and identified the problem quickly. He checked to see if it was available and what it would cost. The part was available and he could pick it up and install it later today. He was back in a couple hours, installed the controller and had my furnace running again. It was less than 8 hours from when I called until he had my furnace heating my home again. Controlling Systems was great to work with today and I even signed up for the annual maintenance program they offer.

I can't say enough good things about this company. They are polite, kind, thoughtful, HONEST, and thorough. They also show up on time. My AC unit was not working properly: it would blow and air and not cool. The condenser wasn't even turning on. I called a *different company* first, and the guy came out and immediately said I had to replace my AC, and gave me some quotes. He did not investigating or diagnostics. Then I called Controlling Systems, saying I needed a quote for AC replacement. Chris came out and did a ton of investigating and measuring, and also asked if I had someone run diagnostics. I said no, and he strongly suggested I have someone come run diagnostics to see if my AC could be fixed. After Chris left, he continued to investigate the process for replacing my AC, since I live in a historic building and the set up for the ducted AC is also unusual. He called me back to tell me about permitting issues, etc. The first company said nothing about permits.
Then Brian came from Controlling Systems to do the diagnostic work. He investigated, and he rather quickly found that something had tripped the breaker for the electrical circuit for the AC. He simply flipped the switch, and my AC worked again. He also showed me aI needed to change the filter on the air handler. So my cost was $200, rather than $10,000-$20,000.

I'm so grateful for the considerate and thoughtful approach that Controlling System demonstrates.

I choose Controlling Systems to replace my old furnace with a heat pump and to add in air conditioning, which I did not have in my 100 year old house. Chris came by to give me details on the system they would install and to provide a very competitive estimate. He was available by phone to answer a few more questions that I had before I committed.

The install took a day and a half and after a last minute decision, they also installed a whole-house humidifier. After the install, I had some issues with noises from the unit placed outside and the humidifier itself. Rudy came by and fixed these issues explaining what he did to damper the noises. He was very professional and also answered all my questions.

I will definitely recommend Controlling Systems to anyone wishing to have a heat pump installed. I am now sitting very comfortably in my house, which has light humidity - perfect on a cold, dry Colorado winter day. The system is very quiet and I couldn't be happier with the result.

These guys are amazing at what they do. Punctual, efficient, knowledgeable, and personable, always willing to teach and explain every step of the process. We have relied on Controlling Systems for a number of our home improvements / routine maintenance over the last few years and each time are thoroughly impressed with their work. Jim, Elijah, and Rudy came this time and expertly and expeditiously installed a heat pump + furnace. Pricing was fair and CS took care of applying for all the relevant rebates which made the process so smooth. Cannot recommend Controlling Systems enough!

Controlling Systems recently installed a mini-split heat pump for me. The whole process was smooth and surprisingly efficient. Ryan, the salesperson, was extremely knowledgeable, not to mention helpful when explaining the system and how the whole thing would work. The install manager Rudy was professional, and so were the install techs Elias and Elijah (apologies for misspelling or just pain being wrong, I'm terrible with names). The communication was great, I felt like I knew exactly what the work was and when it was going to happen. Great job!

We had a great experience with this company! We hired them to replace our furnace and AC unit, and from the first interaction, they were professional, friendly, knowledgeable, and we felt like their pricing was fair. Our install went smoothly and both units are working well! Thanks for your great work, guys!

Gemini, Elijah and crew did a great job installing a new water heater for us recently. They helped identify rebates we qualified for, explained the new features of our appliance, and answered our questions. Plus, they literally whistled while they worked - I
appreciate quality service completed by friendly & fun workers. Thanks!

My experience with controlling Systems was excellent. Jim and Elijah installed an AC unit and an attic furnace. They worked continuously for two days until completing the install. At all times they were cordial, thorough and kept me up to date with every component of the install. In addition they both spent time answering all of my questions during the install and after. Finally, I accepted proposals from several HVAC companies before choosing CS. I chose CS because their proposal was the most affordable considering everything included and also because they seemed the most knowledgeable.

I wasn’t sure if I was going to leave a review or not, but I will be doing business with Controlling Systems again in the future, so I’m hoping this positive review helps keep them around. I’ve had HVAC and plumbing work done in the past through other companies and decided to try a new vendor for my most recent project: a heat pump water heater install and removal of a gas water heater.

I began by doing a bit of research and reached out to five different companies. Controlling Systems was the first company to get back to me, leaving me with an initial impression of their professionalism from their timely communication. I’m not sure if winter is a slow time for the industry or not, but I met with a consultant for a quote within the week. Chris P did a great job showing me various options along with their various rebates and incentives. The best part of the entire interaction was that he didn’t pressure me into the install. I’ve had consultants be overly pushy in the past and that’s a red flag for me and to start looking elsewhere. So I decided why not, and proceeded to schedule the install.

A week passes and the install day has arrived. To my pleasant surprise, there are 3 trucks and a whole team to work on the removal, electrical, and install of the water heater. This completely shattered my expectations set by previous contractors as I was use to seeing 2-3 crew members at most from other companies. They were quick and efficient with their work and I had a new water heater by the end of the day and 10 days after I began my initial research. I’m very impressed and hope to continue doing business with Controlling Systems for the foreseeable future.

We’ve been doing business with Controlling Systems for more than 10 years for maintenance and repairs. This time we want to thank Chris (Seller) for his service, suggestions and support about the new Furnace that needs it to get replaced (after 20 years); Rudy and his team, the installers, for the professional job during the installation process, respectful and polite. They were far and beyond. All of them were always very polite and professional, answering to all ours questions and concerns. We highly recommend Controlling Systems. Please, continue doing the great work.

Yolima’s and Bruce McDonald

Gemini, Elijah, and Dominic did a great job installing my cold climate heat pump mini split and Chris did a great job of helping decide on the right unit for my house. Gemini did a great job of installing my indoor unit and explaining how to run it, Elijah made sure to check with me before connecting the condenser to the indoor unit to make sure the connection was in the location I wanted it, and Dominic was accomodating and completed the electrical how I requested it be done. Chris provided expert advice and quick responses on all my questions leading up to the install. They all did an awesome job and were very professional. They also let me know they are taking care of the xcel rebate paperwork so I can get my rebate. I am looking forward to using my mini split this summer for cooling and in the winter for heating my home. I would recommend Controlling Systems if you want a mini split install done.

Nothing but the best experience having AC installed by Gemini and Elijah. They worked super hard and did everything the right way. Rory, Ryan, and Rudy were great as well. Customer service is top notch and I feel confident that Controlling Systems is looking out for us.

I use Controlling Systems each year to start up and shut down my swamp cooler and maintain my furnace. They are always quick to respond, professional, and have never oversold me on anything.

We are extremely pleased with the results of our new heat pump system. Jimmy, Darren and Vinny were a fantastic team…..professional, efficient and clearly very knowledgeable. They did an outstanding job. We highly recommend the company for HVAC systems.

After I understood what to look for and obtain, I wanted a mini ductless system for one room, that is not connected to the rest of the ducted house. Controlling Systems sent a good rep to understand my needs, and the electrician and crew that came out for the installation were on time, good natured, and finished in half the time expected. I love the system, it works, is super quiet, and takes up little space. Big fan of Controlling Systems and Mitsubishi

We hired Controlling Systems to install a heat pump system after receiving bids from three or four other companies. Chris at Controlling Systems not only delivered the best bid, but didn't try to steer us away from what we actually wanted (much appreciated!). When the time came to install, their team was friendly (and loved our dogs), professional, and worked hard and quickly to overcome some unexpected challenges our old house threw at them. Extremely happy with their service and will use them exclusively for any HVAC needs in the future.