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Top-Rated Air conditioning pros in Sterling - Updated Nov 2026

Avatar for Conde Tech Services, LLC
Conde Tech Services, LLC
5.0(
206
)
Ductless Mini-split A/C - Install or Replace

Serving Sterling, VA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Our air conditioning was not working and our house was extremely hot. I called on a Sunday afternoon and Matt came later in the afternoon and fixed our problem. Our air-conditioning is working again and we will finally be able to have a good night sleep. I was thrilled that Matt came out on a Sunday evening and fixed our problem. He also took the time to show me how to change the filters in our unit and had me practice to make sure that I could do it by myself. I would highly recommend Conde Tech Services."
Gas Fireplace Service
Gas Logs Maintenance
Heat Repair
AC Maintenance
Cleaned outdoor unit

+2

Response time10 hrs
Response rate92%
Recommended by99%of homeowners
Avatar for Polar Bear Air Conditioning And Heating Inc
Polar Bear Air Conditioning And Heating Inc
4.4(
237
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Sterling, VA and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"I had a 20+ year old air conditioning system and didn't want to nurse it through another summer season so I started looking for a replacement during the very polar cold month of February 2019. Of the three bids I received, I was most impressed with Polar Bear Air Conditioning & Heating Inc's responsiveness, professionalism and price. Three days after I signed a contract, Team Polar was at my house at 8:30 am and by 1:00 pm I had a new air conditioning system! The team worked fast, was pleasant, provided updates and handled the one problem encountered, the condenser wouldn't fit through the front door of my old DC townhouse, with grace and humor as they hauled it around the block and in through the back walkway. I'm looking forward to having a cool, reliable and energy efficient system this summer and would definitely recommend Polar Bear Air Conditioning & Heating Inc. to anyone looking for a new system. Thanks again Polar Bear Air Conditioning & Heating Inc!"
Response time1 day
17 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for SwiftPro Heating, Cooling & Plumbing
SwiftPro Heating, Cooling & Plumbing
4.6(
117
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Sterling, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"I recently had SwiftPro conduct an inspection and assessment of my HVAC system, and am very satisfied with the service. Tyler and Moises were highly professional from start to finish, wearing boot covers to respect my home, and thoroughly explaining their findings. They were efficient, courteous, and took care to ensure everything was done to a high standard. I will likely be using them to replace my entire furnace and air conditioning unit. I highly recommend SwiftPro for anyone in need of trustworthy and quality HVAC services!"
Tri-County Feeds
Trane Odyssey unit
Attic air handler
Old Armstrong AC
R-22 data plate

+29

Response time4 hrs
Response rate100%
Recommended by43%of homeowners
Avatar for BlueStar Air Mechanical Inc.
BlueStar Air Mechanical Inc.
4.9(
32
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Sterling, VA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"I contacted Bluestar Air Mechanical for a second opinion after an appointment with Air One. I have a Carrier HVAC system, and the Air One technician recommended a complete system replacement, claiming the blower was bad, the furnace control board needed replacing, and that there were other issues. Since replacing the HVAC is a big investment, I wanted to get a second opinion. It was only after comparing the service from Bluestar that I realized Air One may have been pushing for a new system sale or lacked the expertise to properly diagnose and repair the actual problems. Isaac, the technician from Bluestar, spent about an hour thoroughly diagnosing and fixing the issues. He found burnt wiring in the furnace and discovered that the wrong capacitor had been incorrectly installed in the AC. Isaac replaced the burnt wiring in the furnace and the capacitor in the AC. After these repairs, my Carrier system was back up and running—without the need for a costly replacement. Bluestar, and Isaac in particular, demonstrated professionalism, expertise, and honesty. They focused on resolving the actual issues instead of pushing for an unnecessary system replacement. I highly recommend Bluestar for their reliable service and Isaac’s thorough and knowledgeable work."
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+13

Response time3 hrs
Response rate100%
6 neighbors recently requested a quote
Air We Breathe LLC
5.0(
20
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+6 more

Serving Sterling, VA and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Air We Breathe strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction. \n \nEmergency calls accepted.

  My Work
  My Work
1 neighbors recently requested a quote
Recommended by55%of homeowners
Avatar for Air Quality HVAC, LLC
Air Quality HVAC, LLC
4.8(
102
)
Central A/C - Service or Repair

Serving Sterling, VA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I discovered my heat pump fan not working on a Saturday after midnight. I sent in a request to homeadvisor and this company responded at 7:30am Sumday with tech availability the same day. They came out and found the problem right away. Their prices are very reasonable especially since it was the weekend. I would highly recommend them for all your heating and air conditioning needs. I will be keeping their info handy for future needs."
 2 ton a/c
 gas furnace with coil
 air handler
 air handler
coil with new duct

+3

Recommended by96%of homeowners
Avatar for Magna Tech Temp Air, LLC
Magna Tech Temp Air, LLC
4.8(
167
)
Central A/C - Service or RepairCentral Humidifier - Repair or Service

Serving Sterling, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"I had an extremely positive experience with Magna Tech Temp Air. Albert set up an appointment immediately, arrived promptly, quickly diagnosed the issue with my air conditioner, and had it working in under 2 hours. The price was very reasonable, and he never tried to sell me anything extra. He was honest, genuinely friendly, and professional. I cannot recommend them highly enough."
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 McCrea Heating & Air Conditioning Services of MD
McCrea Heating & Air Conditioning Services of MD
4.5(
318
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+6 more

Serving Sterling, VA and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"I couldn't be happier with the service I received from McCrea Heating and Air Conditioning Services of Maryland. Upon returning from vacation on a 100 degree July day, I found my old HVAC system basically dead (90 degrees in my kitchen!) ... Shane immediately came out to provide an estimate, we signed a contract on the spot, and he kindly provided some freon to hold me over until the new system could be installed. Brian and Nick showed up exactly on time to install the unit, used drop cloths to protect my flooring, and were exceedingly polite and professional throughout. I'd highly recommend this organization."
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6 neighbors recently requested a quote
Recommended by87%of homeowners
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FAQs for air conditioning projects in Sterling, VA

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Sterling, VA homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.