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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
202 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

"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
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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(
72
)
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

13 neighbors recently requested a quote
Recommended by49%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

"Dale is professional a always gets the job done. He has replaced two HVAC systems in our home and we can always count on him to do great work!"
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."
63 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

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

The difference between a home surge protector and an HVAC surge protector is that an HVAC surge protector is designed to protect the components inside your HVAC unit while a home surge protector is installed near appliances and meant to protect your entire home. There are three tiers of whole-house surge protectors, and they are more expensive to install than HVAC surge protectors.

HVAC pros recommend that you replace your AC filter every one to three months to maintain optimal indoor air quality and ensure your HVAC system operates efficiently. However, factors such as filter type, household size, and environmental conditions may influence the frequency of replacement. Regular filter changes help prevent debris buildup, maintain airflow, and prolong the life span of your air conditioning unit.

While many states do not have specific licensing requirements for HVAC companies, your local city or county might. It's always a good idea to check local requirements online and use a tool like Angi’s contractor license lookup to confirm that the company you’re considering is licensed. Regardless of licensing, you should always ensure the company you hire is fully insured to avoid potential lawsuits if a technician is injured on your property. Additionally, it is recommended to check if the company holds third-party certifications, such as North American Technician Excellence (NATE) certification or R-410A certification, which qualifies them to work with HVAC refrigerants.

Winterizing can still help you save money on energy costs and help prepare your AC for its work next year when you turn it back on. We suggest planning for at least some maintenance, even if winters are mild in your area.

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.

See all articles