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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon817
    Verified heating and air conditioning services reviews

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

Avatar for Relax HVAC, Inc.
Relax HVAC, Inc.
5.0(
32
)
Central A/C - Service or RepairBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+21 more

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"My AC failed and I had limited time to find a good solution, I made a phone call to Relax HVAC based on the online reviews and it was a great decision. Nasser came to check the situation, he gave a very detailed and comprehensive overview of the situation and provided with the options I had. I decided to replace the unit, Nasser went above and beyond to find a unit delivery service but there was nothing available over the weekend so this gentleman went for unit pick up himself and finished the installation within a day from my initial call. Moreover, the provided price was very reasonable.I can't be more happy with the outcome and highly recommend Relax HVAC"
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+12

Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Magna Tech Temp Air, LLC
Magna Tech Temp Air, LLC
4.8(
167
)
Central A/C - Service or RepairHeat Pump - Repair or ServiceThermostat - Repair or Reprogram+4 more

Serving Potomac Falls, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"So happy I worked with Magna for my issue! They came within 45 minutes of me posting on Angie's List... that has to be some kind of record. They diagnosed the issue quickly, clearly communicated what was needed and what the cost would be, and I moved forward with it. My AC was back up and running within an hour. Highly recommend! I've saved Magna Tech's phone number in my contacts and they will be the first company I call every time I have an HVAC issue."
New !6 Seer 3 Ton Air condition
B-Vent
New 80% Gas Furnace Instal
Ashburn Upgrade
Ashburn upgrade

+4

Response time3 hrs
11 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Polar Bear Air Conditioning And Heating Inc
Polar Bear Air Conditioning And Heating Inc
4.4(
237
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+47 more

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Joe and his team were fantastic in replacing our old HVAC Units. I really appreciated Joe’s willingness to hop on the phone with me whenever I had questions about the estimate or the work being done. He was very patient and never overbearing. The work was done correctly and quickly. The price was competitive compared to other quotes I received. I even had to call Joe a year after the work had been done to pick his brain about an attic renovation that might have had some impact on the HVAC system. Even though the question wasn’t going to lead to any more business for Polar Bear, Joe took the time to answer my questions about the potential impact of the renovation on the HVAC system. Truly appreciated his high level of customer service! Would definitely use Polar Bear again!"
Response time1 day
15 neighbors recently requested a quote
Recommended by88%of homeowners
Consumer's Choice, Inc.
4.1(
68
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+35 more

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Consumers Choice has been my go to hvac contractor for 8 years. Recently, I had a leak in the closed loop water source that feeds into my hvac. CC replaced hoses and valves and got cool air going again. I never call anyone else."
Recommended by96%of homeowners
VS Heating and Air Conditioning, LLC
4.6(
109
)
Electric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 2012

Free estimates

Customers say: Quick response

"I had called 5 other places before calling VS, and I'm glad I did. Van was courteous over the phone and answered all my questions. He showed up on time (the same day) to diagnose my AC problem. He found the problem quickly and fixed it. He also inspected both my outside condenser units and recommended one of them to be charged which I accepted. The service was excellent and reasonably priced. I will recommend VS to everyone I know and definitely use them again."
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+4

Recommended by94%of homeowners
Avatar for RC Mechanical Service LLC
RC Mechanical Service LLC
4.6(
160
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair+2 more

Serving Potomac Falls, VA and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

We offer over 28 years of experience in the HVA/C industry. We take on a wide range of HVA/C projects to include full installation for additions and SERVICING as well as HVAC installs, and Repair & services upgrades, and a variety of other jobs. We take pride in our quality of work and our commitment to outstanding results. We're committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

HVAC
1 neighbors recently requested a quote
Recommended by95%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

This depends on the extent of the freezing. Some ACs only need an hour or two to thaw out, but others may need a full day to completely unfreeze. Once you turn off the system to let it unfreeze, check it periodically to make sure the drain pan doesn’t overflow. When you turn the system back on, keep an eye on it to ensure it doesn’t start freezing again.

A frosty expansion valve that isn't blowing out cool air is a sure sign that it’s time to replace it. It might also be time to replace the TXV valve if your AC unit switches off soon after turning on or if you have poor airflow in your home.

Yes, through thorough cleaning and inspection, optimizing functionality, and reducing energy use.

If your central AC is not blowing cold air, you should try resetting the system. Many systems have a reset button. Make sure your thermostat is off, then turn off the circuit breaker that powers your AC. Hold the reset button for three to five seconds, then turn the circuit back on. Set your thermostat to cool and choose a temperature cooler than the room. Your system should turn on quickly.

If your AC condenser is nearing the end of its life, it might leak fluid or make loud or unusual sounds (like grinding or hissing). You might also notice that it isn’t heating your home as evenly or effectively as it once did. Also, an aging condenser will have to work harder to cool your home, which may force it to use more power and drive up your utility bills.

The Potomac Falls, VA 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.