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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon981
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Thornton, CO

*The Angi rating for Heating And Air Conditioning Service companies in Thornton, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Thornton, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on July 24, 2026

Find Heating and air conditioning pros in Thornton

Avatar for Lous Heating and Cooling LLC
Lous Heating and Cooling LLC
5.0(
69
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair+1 more

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Extremely profession, courteous, and honest consultation and repair. I would highly recommend Louis for any kind of HVAC work"
80% Furnace Replacement
1998 York Furnace
Air Conditioner Replacement
Furnace Replacement
Swamp Cooler Deep Cleaning

+7

Response time4 hrs
194 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for M & H Air, LLC
M & H Air, LLC
5.0(
18
)
Central A/C - Service or RepairCentral A/C - InstallDuctless Mini-split Heating System - Install or Replace+14 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"Very Professional and did not hesitate to explain everything in detail. It is hard to find an HVAC company you can trust to show up and do it right the first time and I believe this is one. Will recommend for future jobs!"
M & H Air, LLC
Victory Outreach Church
3 neighbors recently requested a quote
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Avatar for Air&Hvac Master
Air&Hvac Master
5.0(
14
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallCentral A/C - Service or Repair+3 more

Serving Thornton, CO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Service was quick and very professional. Thank you!"
Clogged AC coil
After cleaning
Air Duct Cleaning Project
Air Duct Cleaning Project
Coil after cleaning

+26

Response time10 hrs
Response rate100%
1 neighbors recently requested a quote
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Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
5.0(
73
)
Gas Furnace / Forced Air Heating System - InstallHeat Pump - Install or ReplaceBoiler or Radiator Heating System - Install or Replace+11 more

Serving Thornton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I was impressed with how my pro, Bryan, explained everything to me before he did it. He’s very knowledgeable and personable. I would hire behold HVAC again."
Mini Split Install
A nice, new, clean Boiler - restoring heat right in time for the evening!
Glad we were able to restore heat same day for this customer. Replaced Furnace and A/C for proper installation, air flow and 10 year warranty on FULL SYSTEM.
Glad we were able to restore heat same day. Full Boiler replacement, repipe and zone valves.
Mini Split Install

+67

14 neighbors recently requested a quote
Recommended by48%of homeowners
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Avatar for Emporia Home Services
Emporia Home Services
4.8(
22
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+26 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"They did an excellent job. The HVAC person was very knowledgeable and dedicated, to me its a reliable employee. For the person that installed the energy monitor, he seemed to be competent."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

Response time2 days
Response rate100%
7 neighbors recently requested a quote
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Avatar for Absolute 1st Choice Heating & Air Conditioning Inc.
Absolute 1st Choice Heating & Air Conditioning Inc.
4.5(
122
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceElectric Boiler or Radiator Heating System - Repair+10 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Absolute 1st Choice will absolutely be our 1st choice. He deserves more than 5 Stars. He found problems that were more serious than the one we hired him to fix. He explained what needed to be done and offered to do it. He made no attempt to "upsell' us on anything. He stayed until the project was completed to our satisfaction. He was well organized, professional and trustworthy. Trustworthiness is the most important thing, without that I might as well have tried to fix it myself. I know that wouldn't have ended well. If you hire a company with a fleet of fancy trucks and prime time TV ads, you can be fairly sure that the service tech will , at some point, magically transform into a a salesman. Thank you, Home Advisor!!!"
Response time8 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for New Era HVAC
New Era HVAC
4.8(
28
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+7 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"New Era HVAC was amazing! I own a small business that has a very challenging environment to work around. Jared was extremely professional and minimized the disruption to our routine. We have large warehouse heaters. A few years ago we had one installed by another company. They left a huge mess, took 2 1/2 days to do the work and had no regard for disrupting our business. In contrast, when Jared replaced the second one he was done in one day, left the area clean and neat when he left, and was extremely accommodating with us. We have also had a tankless water heater replaced by New Era and had the same experience. Professional, honest, and reliable - you will not find a better company out there!!"
Navien tankless water heater pvc direct vent
Navien tankless water heater hard piped (copper)
Navien tankless water heater (acid neutralizes)
Gas fired unit heater
Swamp cooler

+49

Response time12 hrs
Response rate98%
Recommended by100%of homeowners
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Avatar for One Hour Heating & Air Conditioning - Loveland
One Hour Heating & Air Conditioning - Loveland
4.7(
207
)
Central A/C - Service or RepairAir Ducts & Vents - CleanGas Furnace / Forced Air Heating System - Repair+6 more

Serving Thornton, CO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1978

Free estimates

Emergency services offered

"Brian, the HVAC technician was professional, friendly and extremely knowledgeable, he provided a full estimate before starting the work and then performed the repair immediately. We were back up and running in minutes. Well Done 1 hr team."
53 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Elevation HVAC
Elevation HVAC
5.0(
18
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceDuctless Mini-split Heating System - Install or Replace+4 more

Serving Thornton, CO and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Tony was very easy to work with and accommodating. I had narrowed my choice to 3 firms. Elevation was not the cheapest nor the most expensive but I felt most comfortable with Tony and believe he offered the most value. My air conditioner was installed today, I hope this will be the start of a great (and cool) relationship."
Furnace replacement
Furnace replacement
Furnace replacement
Furnace replacement
Furnace replacement

+5

Response time2 hrs
Response rate88%
Recommended by100%of homeowners
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Heating and Air Conditioning questions, answered by experts

Absolutely! You can seriously improve the overall value of your home by maintaining high-quality, compatible systems for heating and cooling. Potential buyers will love not having to worry about getting a new HVAC unit for 15 to 20 years and will pay more for it. For maximum efficiency and cost savings, replacing the furnace and air conditioner at the same time, when possible, gives you (and potential future buyers) reliable comfort and modern convenience.

The standard HVAC warranty is around five years. Still, many brands offer an extension to 10 years if you register the product within a specific timeframe, typically 60 to 90 days post-purchase or HVAC installation. Over the past decade, warranty periods have substantially increased, shifting from 3-5 years in the 90s to the now-prevalent 10+ year warranties. Both warranty types cover parts failing due to manufacturer defects, incurring no additional costs. Some manufacturers provide extended warranties surpassing the usual 15- to 20-year window, though these often involve extra fees. 

While Freon is mostly odorless, a Freon leak will produce a faint chloroform-like smell. Some people find that Freon's odor has a subtle sweetness to it. Some telltale signs of a Freon leak beyond odor include ice crystals on your evaporator coil, bubbling sounds, and hissing noises.  

Some HVAC systems tend to use R410A refrigerant, although if you have an older model it may be using R22. R22 is banned due to its harmful environmental and health impacts, and it is a sign that your AC unit is old enough to consider a replacement and the significant efficiency gains that could come with it.

A new HVAC system can increase your home's value by about 5% to 7%, which can translate to an added value of $2,500 to $3,000. The return on investment (ROI) can be around 30%, especially if you upgrade the entire system, including ductwork and insulation. Adding modern features like a smart thermostat can further increase your home’s value by making the heating and cooling systems more efficient and convenient. However, since a new unit can cost $10,000 or more to install, it's important to weigh the upfront cost against the potential increase in home value. For a specific assessment, it's best to consult a local AC installer.

The Thornton, 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.

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