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TRUSTED BY DECATUR, TX HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon69
    Verified heating and air conditioning services reviews

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

Avatar for Dr. Air & Heat Services, LLC
Dr. Air & Heat Services, LLC
4.9(
161
)
Central A/C - Service or RepairThermostat - Install or ReplaceHeat Pump - Repair or Service+6 more

Serving Decatur, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Not only is David highly skilled in resolving HVAC issues, but he was a pleasure to work with and taught me a lot! He was punctual, communicative and patient, taking the time to explain what the issues were (in plain English), and in the end solved my A/C problems much faster AND cheaper than the so called “best in town” HVAC company I was working with. Highly recommend, and will be calling him back again!"
Closet upflow airhandler
4 TON GOODMAN AIRHANDLER
Savana
Response time4 hrs
Response rate94%
329 neighbors recently requested a quote
Avatar for Monument Heat and Air LLC
Monument Heat and Air LLC
5.0(
6
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair

Serving Decatur, TX and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"I had an excellent experience with Monument Heat and Air when my heating system stopped working during a cold snap. From start to finish, their service was top notch. The technician arrived on time, quickly diagnosed the problem, and explained the issue in a way I could easily understand. They were professional, courteous, and efficient, getting my system back up and running in no time. I also appreciated their fair pricing and transparency. No hidden fees or surprises. It’s clear they genuinely care about their customers. I highly recommend Monument Heat and Air for any HVAC needs. They’ve earned my trust, and I’ll definitely call them again for future heating or cooling repairs!"
Hvac projects
New condenser install
Hvac projects
Hvac projects
Hvac projects

+20

1 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for One Hour Heating & Air of Decatur and West Denton
One Hour Heating & Air of Decatur and West Denton
5.0(
5
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceDuctless Mini-split A/C - Install or Replace+7 more

Serving Decatur, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"If you're looking for an HVAC company you can trust, look no further than One Hour Heating & Air of Decatur & West Denton. My window A/C started blowing warm air and rattling (turned out to be a refrigerant leak and a clogged condenser coil), so I called them ? and I'm glad I did. Scheduling was quick, and the office staff was friendly. The technician arrived right on time and was professional from start to finish. They explained exactly what was wrong, walked me through my options, and didn't try to upsell me on anything I didn't need. They cleaned the coil, sealed and recharged the refrigerant, and had my A/C blowing ice cold again within the hour ? then cleaned up completely before leaving. It's rare to find a company this honest and good at what they do. I'll definitely be calling One Hour Heating & Air of Decatur & West Denton again, and I recommend them without hesitation!"
HVAC
Avatar for DFW Diagnostics
DFW Diagnostics
5.0(
6
)
Electric Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - RepairGas Boiler or Radiator Heating System - Install+1 more

Serving Decatur, TX and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

Hello! We are DFW diagnostics! We are located in Dallas. We travel all over the DFW METROPLEX. Our Licensed professionals can handle all of your home repair needs! Currently we are focusing on Plumbing & Pressure Washing. We are eager to prove our work ethic as elite! We have over 20 plus years experience in both fields. Please dont hesitate to inquire about ANY service you may need at your house! Thanks!

Seperated Pipe
Pipe Repair
Work Trucks
Work Trucks
Work Trucks

+3

Recommended by100%of homeowners
Langham's HVAC LLC
5.0(
1
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+6 more

Serving Decatur, TX and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

With over 10 years experience in the HVAC industry, Langham's HVAC LLC is your industry expert in the area . We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. We have so many options to fit any budget. Give us a call today and we look forward to working with you!

Response time40 mins
Recommended by100%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

Here’s the cost formula to find out how much it’ll cost you to run a window air conditioner in your home:  Watts * (hours used) / 1,000 * (Local kWh) = daily cost of running a window unit. If you need help calculating the cost of running your window AC unit, consult an AC repair or installation pro for an accurate estimate.

Look up your model number online to find additional information. Usually, you can just take a look at the old filter and find the brand name and dimensions to order a new one. When replacing the filter, always check that it’s pointed the right way to match the direction of your airflow. Many filters have arrows on them to help with this step.

At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule—once in the spring for the cooling system and once in the fall for the heating system—is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.

Here’s how AC professionals will clean your AC coils:

  1. Unplug the AC unit or turn off the breaker to the unit in your circuit breaker box.

  2. Remove the faceplate.

  3. Spray a vacuum hose attachment or compressed air can to remove debris, dust, dirt, and grime.

  4. Use a soft-bristled fin comb to remove stubborn caked-on debris.

  5. Use the vacuum hose to suck up any extra debris.

  6. Take a coil-safe cleaning solution and spray it onto the coils. Try to choose a no-rinse solution.

  7. Let the solution sit for at least 15 minutes.

  8. Gently wipe away loosened grime and debris with a microfiber cloth.

  9. Reattach the faceplate, plug in your AC system, or turn the breaker back on.

It depends on the size of the space you’re cooling down. If you’re looking for the most affordable way to cool an entire house over a long period of time, then central air will be more cost-effective. But when it comes to cooling down a couple of rooms or one floor, a window unit may be the cheaper option, with both a lower cost to install and less energy used to run.

The Decatur, TX 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.