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

Serving Herndon, 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 Herndon, VA and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Joe was clearly very experienced with knowledgeable about old row houses like mine, and he gave me a ton of confidence in his professional opinion. His quote was also very affordable, and we are happy with the work his guys did installing a new central AC system in our home."
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 Herndon, 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%
4 neighbors recently requested a quote
Avatar for Magna Tech Temp Air, LLC
Magna Tech Temp Air, LLC
4.8(
166
)
Central A/C - Service or Repair

Serving Herndon, 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 SuperNoVA Air Duct Cleaning
SuperNoVA Air Duct Cleaning
4.9(
172
)
Air Ducts & Vents - Clean

Serving Herndon, VA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"They did a FANTASTIC job. The air duct cleaning was very thorough (they found mold in one system and spent a lot of time cleaning and treating it), they were very professional and courteous; they communicated really well and recommended only what was truly needed - did not upsell at all; they left all the work areas as clean and neat like they were never there. I will definitely hire them again and would recommend them to anyone for air duct cleaning."
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+8

Response time6 hrs
Response rate100%
Recommended by95%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 Herndon, 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 Herndon, VA and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"The team did a great job in the heat to install a new AC to fix my broken one, and new ductwork, in less than 8 hours. After receiving multiple quotes, OHA mentioned that the way my ductwork was set up on exit from the AC was the most likely reason my old ACs compressor gave out so soon after warranty lapse. The reasoning made sense and I'm already feeling that the AC is performing better after their install!"
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
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Air Conditioning questions, answered by experts

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

A calculation method that your HVAC contractor will use to ensure your system does what it's supposed to is measuring duct output, or its CFM. The calculation requires knowing the cross-sectional area of the ductwork and determining the air speed past any given point within it.

If you don't clean your AC evaporator coils, dirt and debris will build up, which impairs the system's ability to transfer heat. This forces the unit to work harder, leading to inefficient performance, higher energy bills, and frequent breakdowns. Over time, neglected coils can corrode, which may cause refrigerant leaks, or develop mold, ice buildup, and a clogged condensate drain, resulting in poor air quality and an uncomfortable home.

For washable or electrostatic air conditioner filters, you can soak and rinse them with water. If you rinse the filter with water, make sure to use a faucet, shower head, or garden hose with a gentle water pressure setting, as strong water pressure could damage the filter.

But for disposable filters, water could ruin the filter, even allowing mold to grow in the filter. Instead, these filters should be replaced.

When your HVAC technician mentions recharging your home AC unit, they’re referring to the process of topping off the unit with refrigerant, so the levels are properly maintained and pressurized. Normally, a properly functioning AC unit doesn’t need additional refrigerant, but AC units can develop leaks or other problems that decrease the amount of refrigerant needed.

The Herndon, VA homeowners’ guide to air conditioning services

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