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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 Dulles, VA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Kamal was very accommodating with time and he was friendly and fixed my problem inside of 10 minutes!! I would highly recommend Relax Air. As a matter of fact I will call no other vendor for furnace or air conditioning. Can't say enough good things about this experience. Try Relax Air, you wont be disappointed!! E.L. of Ashburn VA"
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+12

Response time1 day
1 neighbors recently requested a quote
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 Dulles, 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 Dulles, 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
21 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 Dulles, 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%
5 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 Dulles, VA and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"Overall McCrea did a good job with my Sept 23, 2019, HVAC installation. The POSITIVES significantly outweigh the negatives: · They had the best price out of 6 proposals. · They agreed to add an additional HVAC return to the basement free of charge ($250). · They leveled my second old existing heat pump without asking...free of charge…I really liked that. · They told me that Fairfax county does a free inspection upon request. I’ve never had an installer tell me this…it is not in their interest to do so. The county inspection was primarily electrical but it was good to have even that independently reviewed. · They responded within 2 hours after I called about an installation problem. It turned out a condensate PVC pipe was installed wrong and tripped a cutoff switch. Everyone makes mistakes. I give them credit on this one because they responded quickly and repaired it quickly. · I requested a Trane and NATE certified installer and McCrea sent out Greg Dworchak who, along with 2 others did an excellent job. They were competent and friendly and answered all my questions very well. One NEGATIVE: · I liked the first sales person (Kris Kimmmel) who gave the initial proposal...very professional and friendly. My only concern was that he went on vacation and the follow up was slow. He did tell me he would be on vacation with limited email access. I emailed my intention to move forward on the proposal by the required date but the response was too late to get the significant Trane rebate. Weeks later I received a call from another representative (Chris Aiani) and he provided an acceptable proposal although it was a lower SEER unit (XR14) instead of the XR16i I originally wanted. Chris apologized to me about this and said they were re-organizing to provide more sales support and that this should not happen again."
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Trane Unit
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21 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 Dulles, 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 Dulles, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Quickly diagnosed the central air conditioning system, and gave an estimate on the cost of recharging the refrigerant in the compressor. The system is a 14 year old Carrier unit. Albert also included some sealant that may plug up the slow leak of refrigerant that occurs every 2 years or so. Albert also, showed me how to adjust the damper to control the flow of air to the second and third floors of the house. The other company that arrived wanted to charge me $5,000 to repair the system or close to $7,000 to replace the AC system with new. I intend to call upon Magna Tech Temp Air, Inc when I'm ready to purchase a new HVAC system. Thanks again for taking the time to listen to my concerns. Well done!!!"
New !6 Seer 3 Ton Air condition
B-Vent
New 80% Gas Furnace Instal
Ashburn Upgrade
Ashburn upgrade

+4

Response time3 hrs
18 neighbors recently requested a quote
Recommended by94%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+2 more

Serving Dulles, 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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7 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for OHA HVAC, Plumbing, Chimney & Fireplaces
OHA HVAC, Plumbing, Chimney & Fireplaces
4.9(
27
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Dulles, VA and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"I am so happy with my AC working like it is brand new! I so appreciate Matthew Thomas for finding the problem and getting the job done! His polite conversation and knowledge of the problem made me feel comfortable asking him questions, and his answers were in language I could understand🤣 Thank you OHA, Gail & Mick"
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up

+3

Response time1 day
Response rate100%
9 neighbors recently requested a quote
Avatar for McCarthy Services
McCarthy Services
4.2(
370
)
Central A/C - Service or RepairCentral A/C - Install

Serving Dulles, VA and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

"They really helped out in a serious bind! Great customer service and install. You wouldn’t even know they had been in our home to install a new furnace and air conditioning units. Highly recommend!"
Installing a new A/C system.
210 neighbors recently requested a quote
Recommended by91%of homeowners
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Air Conditioning questions, answered by experts

Some HVAC systems tend to use R410A refrigerant, although if you have an older model it may be using R22. R22 is banned due to its harmful environmental and health impacts, and it is a sign that your AC unit is old enough to consider a replacement and the significant efficiency gains that could come with it.

Because of the improved efficiency, ACs with higher SEER ratings tend to cool down your home better than models with a lower SEER. Higher-SEER AC units have a higher cooling capacity and a lower energy demand, meaning they may help cool your space faster without running up the electricity bill.

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

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. 

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.

The Dulles, VA homeowners’ guide to air conditioning services

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