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Duffey's Heating & Air Conditioning
We are dedicated to providing top quality services to local homeowners. Our company is based on the belief that a reputation for being a reliable and honest HVAC contractor is the recipe for success. We take great pride in our craftsmanship and complete any job with the utmost integrity, honesty, and precision.

Our company is your source for courteous, prompt, and reliable heating and cooling service! We are the only repair service you will ever need to call for your HVAC needs. Duffey's Heating & Air Conditioning of Highlands Ranch is a customer-oriented HVAC contractor that always puts the needs of our clients first!
Services
Do you need a qualified professional to take care of your heating & air conditioning systems? Perhaps a replacement or repair job on your AC unit?

For all your HVAC needs, be sure to get in touch with us right away! Duffey's Heating & Air Conditioning of Highlands Ranch is a full service Highlands Ranch, CO air conditioning and heating company that has more than 20 years of industry experience, delivering top quality, reliable, and efficient services!Our experienced repair and installation technicians are knowledgeable, highly trained, and courteous.
For the last 20 years, we have been delivering top quality HVAC service with integrity, honesty, and professionalism! Attaining complete customer satisfaction is our top priority, and we go out of our way to please our clients! Visit our Google+ page to find out what our client have had to say about their experience with our heating & air conditioning repair company.
Reviews (11)
Jane C.
Jane C.
Feb 17, 2021
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I was having trouble with my furnace (on the coldest weekend since forever naturally). Mike showed up in about an hour, did a thorough check of the system, set up a work around until a part was available then came back in the evening the day he got the part and installed it.

The furnace is not only repaired but works better than it ever has while I've lived here. They are definitely where I'm going from now on. Thanks guys!
Jen R.
Jen R.
Jun 01, 2020
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We had a great experience with Duffey's today. Our AC suddenly stopped working this morning and within a short time our house was getting pretty uncomfortable. I called and left a voicemail and received a call back in a short time and was able to make an appointment for the same day, within a couple of hours . The technician that showed up was very professional, was wearing a protective face respirator and kept his distance while in our home. He was able to quickly diagnose and fix our issue and the cost was reasonable. I highly recommend!
Haley W.
Haley W.
Aug 29, 2019
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Really great service from Mike! He came out and inspected our AC unit, diagnosed the problem and was able to get it fixed! He provided great explanations of our problem and what he did to fix it and things we should watch for in the future.
Rebecca P.
Rebecca P.
May 03, 2018
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I was very happy with Duffey's. After contacting 3 other HVAC companies about a humidifier, Shawn was the only one who took the time to walk me through several options. And, on top of that, I was hoping to get the job done super quick, because we had relatives visiting who were really sensitive to the dry air. Shawn got me in--which I really appreciated! Mike installed the humidifier and was polite and efficient. I'd definitely recommend them!
Kelly W.
Kelly W.
Dec 08, 2016
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I had to call Duffey's after I had another company come out to service my furnace and tell me that I needed a new furnace. They were able to come out the same day and ran some diagnostics on my machine and explained everything they were checking and what they were doing on the furnace. Turns out the furnace was completely safe and they saved me from buying a furnace that I didn't need. It was the best service experience that I have had with an HVAC company and I highly recommend them if you want honest, reliable and quick service. I am extremely thankful and impressed by their customer
Taylor A.
Taylor A.
Aug 01, 2016
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Our a/c unit broke on Saturday night..we made a few phone calls Sunday and left voicemails. Duffey's called my husband first thing this morning (Monday) and had Tim out here by 11:30am. He was friendly and was quick to diagnose the problem (some sort of fuse melting if I understand correctly). He left to get a part and had our unit up and running within 2 hours from arriving. I always get nervous when something breaks that I'm not knowledgable about but I'm glad I found Duffey's on Yelp. Fast, fair-priced and trustworthy.
Bridget W.
Bridget W.
Jul 12, 2016
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Tim came to my house after hours, fixed the problem with our AC and diognosed the problem immediatley! Didnt take much time at all fixing the coils and I could tell he is very experienced! He was was super knowledgable and explained the problem and how to fix it in the future, even offered to come back on a free call if there was an issue. I will definitley recommend him to all my neighbors, family, and friends. Very affordable and efficient. Thanks Duffeys for a great technician!
Jennifer W.
Jennifer W.
Jun 26, 2015
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My AC decided to stop working the other day when it was 95+ degrees outside. The result: my home became a sweltering hellhole within about 20 minutes. After calling around and getting told I couldn't have anyone come out until at least July 1, I called Duffey's. Shawn told me he was very busy but that he would get to my house that same day. And even though he was delayed due to a problem with his truck, he still showed up and promptly replaced the capacitor. I felt the price was extremely fair and I really appreciate Shawn's willingness to squeeze me in on a day when many other
Carroll G.
Carroll G.
Aug 29, 2013
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Came home at 4 p.m. to find the A/C not working. I assumed I would have to suffer until the next day but Duffey's was able to come the same day! Woot! So, we're off to a good start with Duffey's.

Shawn was a very friendly guy, prompt - arrived at the time he said he would despite coming from another job. Within the hour he had the problem diagnosed, had parts on his truck and it was fixed....ahhh, cool house again.

Service call, parts and labor were all reasonable - didn't seem too high or too low. He also gave me some tips on things I can do to keep the A/C running
Jim S.
Jim S.
Jul 07, 2013
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If you need your HVAC system serviced or repaired don't look any further than Duffey's. Shawn came and tuned up our AC and it is running like a champ. Prior to Shawn's visit the unit was running a lot and not cooling the house effectively. Not only is our house cooler (the AC can actually hold the desired temperature now) but it doesn't run nearly as much. I only wish we would have know abut Shawn earlier. He was extremely professional and courteous and answered all of our questions. He made his repairs quickly and for a very reasonable price. I can't recommend Duffey
Monica B.
Monica B.
Jun 25, 2013
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When you find your AC doesn't work in the middle of a 100-degree week, you need to find someone who can help you out fast! Luckily my husband got ahold of Shawn, who was easy to reach and was available to help us out that day. Shawn gave us an initial quote up front to come out and see what was going on with our AC, which was comparable to quotes we got from others. Shawn arrived on time and was very friendly. I know this is probably silly to non-dog owners, but Shawn was so kind and patient with our little pup who is pretty anxious about strangers coming to our house (he even took some time