Rated 4.81 / 5 from 21 reviews
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DALCO Dalco Heating and Air Conditioning is a customer focused heating and air-conditioning company that was originally started in 1981. Located in Denver, CO, we employ highly trained people whose goal is to make our company the best service company in Highlands Ranch, Lone Tree, Centennial, Parker, Littleton, Lakewood, Denver, and the rest of the Colorado Front Range.

Our company specializes in designing, engineering, and installing complete comfort systems for owners of existing homes and buildings just like yours. We take special pride in the craftsmen we train and employ--a fact you'll notice immediately in the attitude and integrity they bring to your job site.
Business details
  • Year established: 2001
Services
Maintenance
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There is nothing better for your heating and/or air conditioning system than annual maintenance. Annual maintenance allows your system to work at peak efficiency year in and year out. A system that is maintained annually experiences considerably fewer breakdowns.
Reviews (21)
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Jessica Brooks
May 26, 2022
This is my 3rd time using Dalco and I will continue to do so. Everyone I have interacted with at this company has been friendly, helpful, and honestly easy to work with. Last year we had a whole home humidifier installed by them and this year they did AC maintenance. I will have them come out in the fall to do maintenance on my furnace. Highly recommend using them - I feel the cost is very fair and the service is fantastic.
Kaitlyn Capper
Feb 11, 2022
Dalco was great. They came out the same day I called and were quick to respond to my voicemail. I liked that they were able to see to my heater as well as my water heater. The tech, Travers, was extremely helpful in answering all my questions and going above and beyond discussing related ways to improve my home and insulation. Super helpful! Would definitely recommend.
Andy G.
Feb 06, 2022
Had a furnace go out on a rental. Called in the morning and they repaired it that afternoon at a reasonable cost. I live out of town and got they're name from a local HVAC contractor. It's nice not to be ripped off when you are not in town. Some contractor's will take advantage of a property owner who does not live in town but they did not. I will continue to use these folks for my other rental properties.
Wendy Titus
Feb 05, 2022
Travers helped us fix an A/C repair, and install an Aprilaire steam humidifier and air purifier this fall. Everything went incredibly smoothly (great communication & work) so I made sure to save his number. Here's where Travers went above and beyond. last night when the temp dropped to -2, our thermostat and furnace just died, not only did he return our late evening call, he continued to troubleshoot with us for over a hour on the phone. Since we couldn't figure it out, he squeezed us into his schedule in the morning. Thank you, thank you!
Sam Chesser
Jan 28, 2022
Dalco installed a new furnace as well as a heat pump for us. They were much more reasonable than other quotes we received, did a fantastic job of recommending units that actually made sense for us, and the installer worked his butt off in our crawlspace and in freezing temperatures. I would 100% recommend Dalco for any HVAC needs based on this experience.
Charles Holt
Jan 17, 2022
Repaired both a leaking boiler and a gas heater in a woodshop. Both repairs were performed satisfactorily without a problem. Service: Heating system repair
Jim Robinson
Jan 16, 2022
I had a relatively new high efficiency furnace failure on a very cold day in January. I chose DALCO due to their great reviews. They arrived that afternoon on time and quickly diagnosed and fixed a relatively complicated problem. Very impressed. Service: Repair HVAC
Jim Merrion
Dec 29, 2021
As a Realtor, I use many home service providers. Dalco is a company I use not only for helping my clients, but also to provide HVAC services for my own properties. Dalco is professional, knowledgeable and honest. They charge a fair price and provide the level of detail and high quality service that keeps me coming back time and time again. I highly recommend Dalco for any HVAC need you have!
Susan Burton
Dec 20, 2021
Marc and his team were amazing to work with. Nice, efficient, hard working and very knowledgeable. Their price was excellent and I highly recommend them! Services: AC installation, Thermostat installation, Heating system installation, Installation
C. Becker
Dec 13, 2021
The service technician came out to perform a tune-up to maintain our 10-year warranty with Trane. He noticed that our specialty filter needed to be replaced and noted that there are separate filters for winter and summer. As our furnace and air conditioner are new, we were thankful to better understand the filter system. Overall we were pleased with Dalco's service. This was a courtesy inspection that was included with our furnace and air conditioner installation.
Brad L.
Nov 12, 2021
Great company and service. Travers was on time and gave me great advice on how to keep my furnace and equipment running at top shape. I am having them install a humidifier and I will be using them for years to come. Thank you Travers and Dalco! Services: Installation, HVAC maintenance
Allison St John
Sep 29, 2021
Dalco installed our AC and has done a great job with routine maintenance. Not only do they thoroughly inspect the system, they educated me, as the user, on best practices for thermostat settings and what air filters are best to optimize the efficiency of the system. Service: AC maintenance
Ellen O'Clover
Sep 01, 2021
We had Dalco perform a standard tune-up on our A/C unit, but while their technician was here he also noticed our sump pump wasn't working. Within an hour, he'd left to get the part he needed, returned, and installed it. Thank you for going above and beyond for us! Service: HVAC maintenance
William Barber
Aug 24, 2021
Where do I start? I want to believe at the core of the company that they mean well and want to do the right thing. All the office staff and service techs have been cordial, prompt and professional. Unfortunately, I wish I could conclude that for the owner, Marc Brewer. The system that was designed by Marc has been minimal at best. We live in a simple 1,000 sq. ft. Denver Bungalow.

It was NOT mentioned prior to the install that better attic insulation was needed. After bidding out the project, I spent an additional $5K on spray in insulation in the attic and added an attic fan. While the spray foam has helped with the system's performance, I still strongly believe there are design flaws and will be seeking further consultation on the overall design.

We are almost 3 months from the install and the wifi thermostat that I have paid for has yet to be scheduled to be installed?!? This was a simple request when I originally bid out installing a "central AC" system. Its a $200+ part that I am now set out on my own to try and figure out how to hook it up. I had high hopes as I have various other projects I will be under taking, but I can confirm I will not be using Marc Brewer's operation.

I am not one to write reviews and I, too, work for a small business and get the struggles of finding quality and reliable help. I conclude by saying that I have not received a call from Marc after requesting one from multiple Dalco employees, I bet I get a "google review response" now?
Jessica H.
Jun 13, 2016
We worked with Marc, he and his team did a great job. Reasonable price for the new furnace, they did what they said they were going to do in the time they said it would take. Like another user said, "no pressure sales, no drama, go in and go it done." This was our experience too. We have worked with several contractors over the years and Marc has been the best one yet.
Laura Simon
Jan 13, 2016
I have used Dalco multiple times for new installations and have been impressed and pleased every time. They are professional, responsive, and incredibly experienced. On top of that, they are patient and they take the time to explain what they are proposing.
Jeffrey Willet
Dec 25, 2015
When your furnace quits working on a freezing winter day, you need someone that you can trust to come out as soon as possible. Dalco sent a technician within an hour, he picked up the parts and my heat was restored promptly.
Dave Todd
Dec 06, 2015
Great experience. As a real estate agent my previous HVAC company/technician had moved out of state and was looking for a new company to not only service my needs personally but to refer to my clients.
Tim McKnight
Nov 25, 2015
They were timely and professional. We had a problem after the first day and they were back to our house asap to fix it. Better prices than others we looked into as well.
Steve Berlau
Oct 27, 2015
DALCO did a good job, and was easy to deal with. They presented me a few options for the work, and once I decided to go ahead, they began the work a few days later. No high pressure, no misunderstanding, no drama, got in and got it done.
Robert G.
Jul 23, 2014
AC went out the hottest week of the year (of course!). Dalco sent a repair man out the next morning. Parts were overnighted in and the repair was completed an hour after the repair man arrived. He was polite and efficient. The final bill was at the low end of the estimate. I highly recommend Dalco.