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TRUSTED BY DENVER, NC HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon828
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Denver

Avatar for Horne Heating and Air Conditioning
Horne Heating and Air Conditioning
4.7(
1,434
)

Serving Denver, NC and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"All the people at Horne HVAC from the phone staff, sales staff, installation team and quality are WONDERFUL. The job from start to finish was handled with professionalism. I would highly recommend HORNE to anyone."
clean new lines between home and unit
After - HVAC System on the right was replaced.
After - HVAC System
Previous AC Unit
A surge protector installed with the new system, protecting your investment

+20

Response time1 day
Response rate89%
33 neighbors recently requested a quote
Avatar for GSM Services
GSM Services
4.7(
103
)

Serving Denver, NC and surrounding areas

Approved

In business since 1927

Free estimates

Emergency services offered

"I called GSM inquiring about their HVAC and insulation services. I also asked if I could have someone perform a Manual J load calculation (surprise to me, the Manual J calc was free!) as I felt that my existing heat pump was sized too small for my home (2.5 ton dual-zone single stage heat pump for 2200sq ft 2-story house). We agreed on an appointment time, and they sent Kelly out to my house. Kelly was very nice and professional, and did a thorough job explaining what all could be done and what my options were. Due to having so little room to work inside of the mechanical closest, you would have to remove the air handler completely just to wrap all of the duct work. Since I would be removing the old air handler that was 8 years old anyway, I decided to replace the entire system with a new Amana 3-ton 18 SEER dual-zoned heat pump. Kelly also told me they could seal up the hole & the mechanical closet so that hot air could no longer enter that space as well. I agreed to their quote, and they came out a week later (it would've been sooner but GSM wanted to make sure that the new system was designed properly, so they had to architect and design the layout of the new equipment to fit the small space) to do the work. Owen and Jason came out to perform the installation. They were both very professional & thorough, and they did an excellent job with the swap out & installation of the new heat pump. When GSM told me that it would take two days to do the work, I was prepared to be miserably hot trying to sleep at night with no air conditioning. Not only did GSM bring a portable AC unit for me use that evening so that wouldn't be the case, Owen and Jason actually got the heat pump wired and working the first day so I had full AC that evening, and the portable unit wasn't needed! They also insulated the attic space & mechanical closet with spray foam and foam board so the hot attic air will no longer be an issue. All in all, my experience with GSM has been great! They've been easy to communicate with throughout the entire process, they did an excellent job with the installation of the new equipment, and now I can rest easy knowing that everything has been taken care of!"
New Air Conditioners
AC System Replacement in Charlotte, NC
Dust and debris from ductwork pulled into the duct cleaning machine
Dryer Vent Cleaner Charlotte, NC
Ductless Mini Split Installation

+66

Response time1 day
50 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Brothers- ARS Air, Heat, and Plumbing
Brothers- ARS Air, Heat, and Plumbing
4.4(
188
)

Serving Denver, NC and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1995

Free estimates

Credit card accepted

"Chose Brothers via Angi to determine our heat pump problem. Their assessment led us (given it's age) to decide to replace the system. I obtained multiple quotes and Brothers was priced the best. They promptly installed a new system. All of the guys involved like Matt, Andrew, Shawn & Jamal (forgetting the electrician and another tech guys name, but they all) did an excellent job. I would highly recommend using Brothers for your HVAC needs."
System Installation
422 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for NuBlue Air
NuBlue Air
4.4(
52
)

Serving Denver, NC and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"My husband was outside and noticed that the unit was smoking.  He ran in and turned the system off and asked me to find a good company to call.  Of course I went straight to angies list and found Cool Comfort.  They had a good rating and they were local so I called. They came out within 2 hours and checked the unit.  They guy was so nice and friendly and fixed the unit.  We were really worried because it was an old unit and we were afraid he was going to say it was too old to fix.  It was a great experience with a great serviceman.  We have finally found a company that we will use again and again!
"
HVAC Installation Services
Vent & Duct Cleaning
Indoor Air Quality Solutions
Thermostats
HVAC Maintenance

+36

Response time1 day
8 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Guardian Heating and Cooling
Guardian Heating and Cooling
5.0(
10
)

Serving Denver, NC and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

With years of hands-on experience and a commitment to reliable comfort, we specialize in heating, ventilation, and air conditioning solutions tailored to homes and businesses alike.\n\nOur legacy is built on honest service, skilled craftsmanship, and personalized care. Whether it’s a simple repair or a complex installation, we treat every customer like family and every project like it’s in our own home. From emergency services to routine maintenance, we’re here when you need us most—rain or shine, hot or cold.

Founders
Install
Goodman
Goodman
Gree

+4

Response time4 hrs
Response rate98%
22 neighbors recently requested a quote
Avatar for Accu-Rite Services Inc
Accu-Rite Services Inc
4.8(
20
)

Serving Denver, NC and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"They are so great.  From Samantha who answered the call, to Steve who came out for repairs they made me feel like my job was the only thing important to them at the time.  When I called back a couple weeks later looking for a written statement of what the professional had done to provide the buyer, they obliged.  I had the information emailed within minutes.  If I was staying in NC I would serisouly use them for all of my HVAC needs without hesitation!  I will recommend them to all of my friends any family."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Greenwing Electrical
Greenwing Electrical
5.0(
11
)

Serving Denver, NC and surrounding areas

Approved

Emergency services offered

Credit card accepted

Customers say: True professional

"Jason has done multiple projects for me. Some were planned, some were emergencies . In all cases, Jason was here promptly and did a phenomenal job. He is friendly, fairly priced and works quickly and efficiently. I will definitely use him anytime I need any HVAC or electrical done."
Electrical Project
Electrical Project
Recessed lights and pendant lights
Additional Photos
Mocksville

+3

Response time2 days
20 neighbors recently requested a quote
Recommended by90%of homeowners
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Heating and Air Conditioning questions, answered by experts

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

There are a few things you can do to make your AC repair technician’s job easier and your home more comfortable while you wait for AC repair:

  • Cut back trees, shrubs, and weeds around the outdoor compressor 

  • Clear a pathway inside and outside to your AC components

  • Set up a ladder for attic access if necessary

  • Pull your window AC out of the window and place in an easily accessible spot

  • Supplement with fans and open windows to help keep your house comfortable

For washable or electrostatic air conditioner filters, you can soak and rinse them with water. If you rinse the filter with water, make sure to use a faucet, shower head, or garden hose with a gentle water pressure setting, as strong water pressure could damage the filter.

But for disposable filters, water could ruin the filter, even allowing mold to grow in the filter. Instead, these filters should be replaced.

Running an air conditioner with mold is not safe because it can spread harmful mold spores throughout your home. Exposure to these spores can trigger various health problems, including respiratory issues, allergies, coughing, wheezing, sneezing, itchy eyes, and a sore throat. It may also aggravate asthma in household members. Continued exposure can increase the risk of more serious illnesses like sinus infections, pneumonia, and bronchitis. If you suspect mold in your air conditioner, you should stop using the system until it has been properly cleaned to avoid health risks and further contamination.

Mold in your air conditioner isn't a good thing, as it can be harmful to your health. If the mold travels through the ductwork or is blown out of the A/C, you and your family can inhale mold spores and develop respiratory illnesses and other problems. Preventing mold from growing in the air conditioner will help protect your health.

The Denver, NC 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.