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Avatar for Relax HVAC, Inc.
Relax HVAC, Inc.
5.0(
32
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Sterling, 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
Recommended by100%of homeowners
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

"I highly recommend investing in this company. Matt and Jaysun did a great job with repairs to my AC unit. I was servicing another company. My AC went down. I called the company to come fix it. They told me that I needed a new AC unit. Told me I had to pay almost 6k. So I went to home advisor and found Conde Tech. When they came to look at my AC unit they told me that it needed to be cleaned and that I didn’t need a new AC unit. They did a great job cleaning it and making it new. They saved me so much money. These are guys are honest and genuine. They focused on the job without disrupting my home. I appreciate this company so much. I fired the other company and told them I don’t need their services anymore. From now on if I need any heating or cooling fix, I call 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 - Service or RepairCentral A/C - Install - For Business+3 more

Serving Sterling, VA and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"They installed a new boiler and central air conditioning in my DC rowhome and did a fantastic job. Joe answered all of my questions and they stayed on schedule with the project which was great because it was a larger project. I would highly recommend their services for the quality of workmanship and their prices were very reasonable as well. I will contact them again for future HVAC work in the DC area."
Response time1 day
25 neighbors recently requested a quote
Recommended by88%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+3 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%
3 neighbors recently requested a quote
Avatar for McCrea Heating & Air Conditioning Services of VA
McCrea Heating & Air Conditioning Services of VA
4.6(
373
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Sterling, VA and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"The technician (Shammion) arrived on time and spent time listening to my concerns and answered my questions before proceeding with the work. Shammion has serviced my furnace and a/c unit previously, and on each occasion he has spent time informing me how various parts of my HVAC should work and what I need to do to get the most from the systems. On this occasion, Shammion instructed me on how to use my new thermostat and how best to keep my condenser coil clean in the future. The work was done expertly and in a professional manner, and I highly recommend Shammion and McCrea Heating and Air Conditioning."
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Trane Unit
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16 neighbors recently requested a quote
Recommended by91%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 hired Air Quality HVAC to replace my aging HVAC system and I had a fantastic experience with them from start to finish. Amar was patient in answering all of my questions along with providing pros and cons for the various options. He assessed the situation whilst giving me comprehensive and thorough advice regarding the best way to proceed. Amar and his team arrived and began their work at the scheduled time. They took great precautions not to damage anything by placing cardboard over the flooring and they moved carefully throughout the home. They worked efficiently and effectively without rushing the job. When finished, Amar and his team did an excellent job cleaning up ensuring that no mess was left behind. If you're looking for service that is courteous, fair, and reasonably priced, then look no further than Air Quality HVAC. They provided a quality of service beyond my expectations, and I sincerely appreciate their commitment to honesty and professionalism."
 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(
166
)
Central A/C - Service or Repair

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 by94%of homeowners
Avatar for SwiftPro Heating, Cooling & Plumbing
SwiftPro Heating, Cooling & Plumbing
4.8(
72
)
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

"We had a great experience when SwiftPro completed a dryer duct cleaning and a bathroom fan replacement at our home! They were on time, professional, and friendly. Moises also threw in a much-needed bird cover for our dryer vent to help prevent future issues. We highly recommend Tyler, Moises and the SwiftPro team for all of your HVAC and plumbing needs!"
Business HVAC
HVAC Replacement
HVAC Replacement
Customer's equipment
Look at details

+11

Response time4 hrs
Response rate100%
117 neighbors recently requested a quote
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+2 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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12 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for ARS of Virginia
ARS of Virginia
4.4(
276
)
Central A/C - Service or RepairCentral A/C - Install

Serving Sterling, VA and surrounding areas

Approved (Corporate)

In business since 1950

Free estimates

Emergency services offered

"AC Tech Aaron was highly knowledgeable, amicable and was able to solve an issue that previously caused ARS to replace a newly installed HVC system with another new system, however, Aaron was the one to solve the ongoing issue I had with both current and previous systems. The issue was, the AC simply was not efficient enough to cool my house, reason, the air filters were severely clogged. Solution: Aaron applied a commercial degreaser, then washed both filters, this dissolved an accumulation of over 10 years worth of gunk and soot like dirt. Thanks to Aaron, my AC now is finally running to its full capacity without compromising its efficiency or causing it to overheat or worse, break down. I would recommend ARS to at a minimum inspect and equally clean all AC filters as that would go a long way towards resulting in a far better AC/HVC performance with better efficiency. Thank you Aaron. Joseph"
Install of a new A/C system.
347 neighbors recently requested a quote
Recommended by79%of homeowners
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Air Conditioning questions, answered by experts

You need to know the square footage of your home first. Multiply that number by 20, which will get you the BTUs (British Thermal Units) needed to cool your home efficiently. Homes up to 1,000 square feet usually need a 1.5-ton unit; homes 1,000 to 1,200 square feet usually need a 1.75-ton unit, and homes 1,200 to 1,400 square feet usually need a 1.9-ton unit. Talk to a local pro for more specific advice on your home. 

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.

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.

Yes, a dirty evaporator coil can freeze up. Dirty evaporator coils can’t absorb or transfer heat properly. The dirt and grime restrict airflow, which is needed to move heat throughout the system properly. Your air conditioning unit could freeze over, or it can cause your heat pump to freeze.

A new HVAC system can increase your home's value by about 5% to 7%, which can translate to an added value of $2,500 to $3,000. The return on investment (ROI) can be around 30%, especially if you upgrade the entire system, including ductwork and insulation. Adding modern features like a smart thermostat can further increase your home’s value by making the heating and cooling systems more efficient and convenient. However, since a new unit can cost $10,000 or more to install, it's important to weigh the upfront cost against the potential increase in home value. For a specific assessment, it's best to consult a local AC installer.

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.