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TRUSTED BY HIGHLANDS RANCH, CO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon927
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Highlands Ranch - Updated Nov 2026

Avatar for M & H Air, LLC
M & H Air, LLC
5.0(
18
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - InstallCentral A/C - Install+14 more

Serving Highlands Ranch, CO and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"I had an excellent experience with this HVAC company. Their team was highly professional, knowledgeable, and focused from start to finish. They took the time to explain everything clearly, completed the work efficiently, and demonstrated great attention to detail. It’s refreshing to work with a company that values quality, expertise, and customer service. I highly recommend them to anyone looking for reliable HVAC professionals."
M & H Air, LLC
Victory Outreach Church
2 neighbors recently requested a quote
Avatar for Emporia Home Services
Emporia Home Services
4.8(
22
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+26 more

Serving Highlands Ranch, CO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Very professional. They did an annual service check on my furnace. While doing so, they found that my filter was wrong and could have caused major damage to the furnace. They were able to find me the correct filter in a timely manner. I'll be calling them whenever something is wrong or I need another furnace cleaning/check."
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+11

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
4.9(
47
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairThermostat - Repair or Reprogram+2 more

Serving Highlands Ranch, CO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I had a great experience from start to finish with this company. They were able to install my new AC unit quickly, which I was thankful for, considering how hot it has been. Throughout the entire process, they were transparent with their pricing, explained everything clearly, and never made me feel pressured. Dylan and Tristan were incredibly knowledgeable, professional, respectful, and kind. They took the time to answer all of my questions and made sure I understood what was being installed and why. I was honestly pretty stressed about having to replace my AC unit, but they made the entire experience easy and worry-free. I would absolutely recommend this company to anyone looking for honest, reliable HVAC service. Their customer service and quality of work exceeded my expectations, and I couldn't be happier with the experience."
Boiler Repair/Replacement
Boiler Replacement and Repipe
Boiler Replacement and Repipe
Furnace, AC, Water Heater Replacement
Furnace Tune-up

+35

Response time6 hrs
Response rate100%
85 neighbors recently requested a quote
Avatar for Clean Air Genie, LLC
Clean Air Genie, LLC
4.9(
66
)
Air Ducts & Vents - Clean

Serving Highlands Ranch, CO and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"My experience with Clean Air Genie was great. They were professional and knowledgeable explaining everything to me clearly and provided pictures and videos before and after the work was done. My air ducts were pretty bad (hadn’t been cleaned in 10 years) and they were able to get them very clean and sanitized. I appreciate that their prices were transparent and fair for the work. I will definitely recommend!"
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+3

3 neighbors recently requested a quote
Recommended by5%of homeowners
Avatar for Mountain Pro HVAC Services, LLC
Mountain Pro HVAC Services, LLC
5.0(
126
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+4 more

Serving Highlands Ranch, CO and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"MountainPro HVAC SERVICES is a company that stands out due to a number of core values and high standards as exemplified by owner, Adrian Vargas. Mr. Vargas will squeeze one more service call after a fully packed day due to his commitment to both new and loyal customers. Mr. Vargas always exhibits the utmost professionalism and expertise while answering customer questions after a grueling day of challenges and labor-intensive service calls. It is evident Mr. Vargas appreciates his customers and goes the extra mile to do an exemplary job. So grateful for his customer-oriented work ethic."
Maintenance Services
Maintenance Services
Maintenance Services
Maintenance Services
New AC / Furnace Install

+4

Response time11 hrs
Response rate92%
Recommended by100%of homeowners
Avatar for Heart Heating, Cooling, Plumbing & Electric
Heart Heating, Cooling, Plumbing & Electric
4.7(
92
)
Central A/C - InstallCentral A/C - Service or RepairGas Furnace / Forced Air Heating System - Install+7 more

Serving Highlands Ranch, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Heart is absolutely amazing! Look no further, as Heart is who you should choose to work with! They are very professional, punctual, and do everything right the first time. We have a couple of different areas Heart helped with, and so this review focuses on the HVAC work we needed, beginning with replacing our rooftop package unit. Every single person is phenomenal to work with, and very knowledgeable; starting from Mike setting up the appointment, Roberto coming out for the diagnostic, and then the multiple teams with Cody, Blake, Steven, Collin, and Cory working to get our unit replaced! I know it was much more involved than initially thought, and these guys were here doing all that they could to get our heat up and running again! They offered us heaters to keep us comfortable, and communicating and explaining what was going on every step of the way! We had an issue with the filter, and so Steven, Collin, and later Cody, came back a different day to create larger return vents for us to be able to replace air filters inside our home. They helped us so much, and removed shelving that was in the way too! We also needed our electrical panel upgraded, and so Cory will be helping us with that (thank you Cassandra for getting that reschedule). Heart also was able to have all of what we needed financed under one bill, which was a huge help! I cannot imagine going through the HVAC and electrical replacement with anyone else; these guys made it easy on me and kept my stress level down. My only regret is not having found them sooner back when we needed our water heater replaced. We will definitely keep Heart for any future issues we have, and keep with the membership program to have areas checked out regularly. Thank you to everyone at Heart--you all are truly amazing and we appreciate you so much!"
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+24

8 neighbors recently requested a quote
Recommended by81%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

The size window AC you need depends on the BTU and the size of the room you’re cooling. For a room with 8-foot ceilings, look for about 20 BTU per square foot of the room. For example, a 12-by-12-foot room should have an air conditioner with 2,880 BTU. You can buy something slightly more powerful, but don’t overshoot the BTU for a small room, or you’ll waste energy and have higher bills.

They can, but it’s not as common. Window AC units are much smaller than whole-house systems and less likely to develop refrigerant leaks or similar issues. As a result, you will rarely need to add a new refrigerant, limiting overcharging problems. However, it’s still important to leave refrigerant management in the hands of professionals when window units need work.

Yes, but they don’t feel the same as an AC-cooled room. You’ll feel cool, moist air, opposite from an HVAC system that dries the air as it cools. Ventless units also have less tonnage than alternatives like ductless and central air, which means they aren’t as capable of quickly cooling large spaces or circulating cold air.

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

Unfreezing an AC unit is not a DIY project unless the problem is a dirty air filter. Changing out an air filter is easy for homeowners, but otherwise, trying to repair ductwork, refill refrigerant, or replace a blower fan motor are tasks best left to the pros. Otherwise, you could cause further damage to your cooling system or even harm to yourself.

The Highlands Ranch, CO homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.