HVAC reviews in Denver, Colorado

It was a relief to finally have a cool breeze in our home after the installation. The technician arrived promptly, a little before the scheduled time, and got to work immediately. He explained every step of the process and answered all my questions with patience. By the end of the afternoon, the new AC was up and running perfectly. The professionalism and efficiency exceeded my expectations, making this experience truly satisfying.

Finding a company that truly understands ventilated ceilings was a relief. They arrived about 30 minutes earlier than expected, ready to work. The installation went smoothly, and the results have significantly improved our indoor comfort.

1) When I called I indicated that the house had an older furnace, 20yo approximately. Asked if they would recommend replacement over repair. They indicated that if furnace was in good repair, they would repair. I authorized service visit based on this.
2) Tech arrived at house. Nearly turned out.
3) Incorrectly identified fault as it later turned out, BUT when I asked about repair he indicated that they will not repair any older furnaces and would replace furnace only. This was seemingly in contradiction to point 1. When I questioned tech he indicated that this was their policy. He said older furnaces were inherently unsafe but could not explain even in general why
4) Waste of service fee. Furthermore after some youtube videos and a multimeter it was apparently he really didn't know how to troubleshoot the issues.
5) Following this experience, I felt that they were only interested in the possible sell of a replacement furnace and not in troubleshooting or repairing the existing unit.

I have had good luck with Horizon from the buying of my furnace and air conditioner to the years of great care for my systems by the furnace men to the sales people!

Johnathan and Josh with Horizon came by to do a maintenance check up on our furnace, which
I recommend getting. They both did a fantastic job. So friendly and totally perfeshionly job. Thank you Johnathan and Josh
Edward

These guys are awesome. Had them install my garage door and they were very professional and have a great warranty program

Horizon Services personnel are well trained and thorough in their work. I find this company reliable and efficient, good communication and complete explanations about the work that was done. I believe the rates are competitive. Horizon services my furnace, water heater and air conditioner. There are other services available which I have not used.

As always, the technician, Mike, did a thorough and awesome job. On time to the appointment, left the work area clean and had great recommendations. Thank you!!

The service we get from Horizon is always excellent. Your team are very thorough, they always offer advice and we feel we are important costumers. Thanks to Jonathan and Josh today. You guys are awesome!

Predatory pricing: Read the reviews from Horizon's other location on W. Thomas Ave. to see other customers who experienced similar scams. Horizon came out and its tech told my wife that the capacitor had gone out, causing the compressor to go as well. Since they don’t repair parts on R22 units, the tech claimed we would have to purchase a new AC . . . cool. The tech sent out a salesperson for the new AC unit a few days later and the scam escalated--she said I also needed to replace the furnace because my current blower was incompatible. If I was getting everything replaced, which I plan to do eventually, I wanted it done right, so I had a lot of questions and requests. The responses I got were incoherent garbage from a trained scam artist. I am an engineer and was shocked by the salesperson's claims regarding the superiority of their systems while she was unable to explain basic aspects of their design and function. The verbal quote she gave me for the AC and furnace replacement in my less than 2,000 square foot house was ~$16-18k. In the end, Horizon realized I was not going to be scammed by them and called me back to say they did not see us as a fit. A few days later, Northglenn HVAC came out and fixed my system for $167. There was no need for a new AC at all; we just needed a new capacitor and it was good to go. It’s been running smooth keeping the $15,833+ I saved cool ever since. Get multiple quotes but don’t let one of them be from Horizon.

Horizon is the best HAVC service in the area. Each technician that has out to perform a service was on time, thorough, and professional. They always explain clearly what is being down, and they provide recommendations, if necessary.

David, Jonathan, and Carolyn were great to work with. All were very professional, arrived on time, and didn't leave until all my questions were answered. I hope they gave me a competitive price on my new furnace and water heater and plan to call in the future for my annual maintenance inspections.

I called for service on my boiler and the person that booked the appointment didn't ask about the age of the boiler so when the tech arrived he said my boiler was too old and the company doesn't work on boilers older than 30 years. I was charged the $98 for something that could have been told me on the phone and not had the tech come out for something they can't even touch. Of course, they said they can replace it and it would be around $30,000 simply absurd.

I had Horizon Services install a new central A/C unit for me in a new home. Good customer service is very important to me and Horizon did not disappoint. My interactions with the office staff, sales and installation personnel were all courteous and professional.

I've used Horizon Services every year since we bought our home in 2013, initially for a furnace repair and then for ongoing annual maintenance and inspection. The techs are always very knowledgeable, and I appreciate that. Sometimes, they have suggested minor improvements, explained in a straight-forward way with the expertise to back it up , but the techs are never pushy and I don't feel like I am being upsold or fearmongered. This year, our tech was David, and as expected he was professional, polite, and respectful of our home and our pets. After he completed his inspection we talked about his findings and the performance of my furnace; David's honesty and proficiency left me at ease and with peace of mind about the function and performance of our furnace for the coming winter.

This winter our heater stopped working in the middle of a deep freeze. Our repair guy couldn’t come until Monday so we called Horizon in a pinch. Such a waste of money. All the kid did was give a diagnosis but did nothing to repair and told us we needed a $500 evaluation to know for sure. He acted really nervous when giving his sales pitch to my husband and I. We were disappointed he didn’t get the heating back on with it being about 15 degrees outside. I now know why he was nervous.

There was a simple override switch he could have pushed to get the heat on for the night. He knowingly looked at a toddler and pregnant woman and left us in a freezing house for the night.

The next day our regular repair man had the heat going in 5 mins!

Months later I now know what the Horizon guy did with his time in our utility room. He labeled every pipe and machine with advertising for Horizon. Hot pink labels with “call Horizon” were everywhere. I don’t regularly examine the utility room so it took a while to nice the blatant advertising job. The other day I found yet another sticker on the hot water heater.

Don’t waste your money paying them to advertise in your own home, and getting them to just up-sale you a problem that doesn’t exist without fixing the one that does.

I would upload photos but as so mad I cut up all the stickers and labels before posting a review

Be very careful. They get the second star here because they are well polished, efficient, on time, and highly professional. The gas valve assembly in my furnace was not operating correctly. They were able to pinpoint this a bit. After putting together a quote they determined that I needed to have this assembly replaced as well as the thermostat. They also thought that "Furnace manufacturer annual maintenance" was necessary to "Pick proper filter size for system and select for equipment" This charge would have been $198. They wanted to charge $532 to replace the thermostat. The thermostat was about $75 online and I picked up a programmable one at home depot for $26 and installed it myself in about 15 minutes. They wanted to charge $366 to clean the blower wheel. You would think this would be part of the "furnace manufacturer annual maintenance". The big one is to replace the gas valve assembly. I bought the part with 2 day shipping for $90 all in. I woke up this morning and the furnace finally kicked on. This was probably from clearing out the gas assembly and the pipes that are connected by tapping on it with a crescent wrench. Now I have a spare part if the part actually fails. All of this together would have been $2383. They also talked about all of these repairs not being warrantied because my furnace was too old(20 years). They proposed an alternative: a completely new system. This would have been around $7000 all in with installation. If you do some research you will find that new furnaces start just over $1000 brand new for base models. With this all said, I would try and find a company other than horizon to do business with.

I've used Horizon Services for years. They always respond quickly, have great techs & don't push 'add ons'.

When our furnace went out, we called 10 different companies and Horizon was the only one who came out same day! They had scheduled our appointment for the day after, but had a cancellation and fit us in within a few hours. Their Tech, David, came out. He was running behind due to traffic but called every so often to keep us updated. He was so friendly, and didn't make me feel ignorant when I was trying to describe our issues. It turned out that our Thermostat had died. He helped us wire in a new one, and we were back to warmth! I can't say enough about how great he was, as well as the company. :).

Zen came out to check my AC. He’s an extremely knowledgable technician and very interesting!!
He found a part that he gave me the heads-up for the future — it’s beginning to show some rust and he wanted me to know to keep an eye on it, to avoid a huge expense in the future.

Jon, the plumber is an incredibly nice and knowledgable guy! He was thorough and patient, giving me options to increase my comfort.

Thoughtful and professional service. Technician considered every possible source of our problem.