Air One Tech
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Air One Tech
When it comes to your residential and commercial heating and air conditioning repairs, it's always comforting to know you are working with a licensed and insured company. As a highly-rated HVAC contracting company servicing the Northern Virginia, we can guarantee we are the choice company for you.

Here at Air One Tech, we have provided our valued customers with the most reliable and quality commercial and residential heating repair in Virginia for many years now.Countless homes and businesses have entrusted our HVAC contractors to provide the perfect solution for their air conditioning and heating problems.

Air One's NATE-certified heating and cooling contractors are highly trained in the many Heating problems that can strike your home or business at any time in the winter or summer. Our HVAC contractors are fully-equipped to work with a variety of makes and models, including Carrier heat pumps, Goodman heating units, and Trane air conditioners.
Services
If your AC unit haven't been working out for you in the hot weather, you need our help! It may be time for a long overdue central air conditioning upgrade or maintenance appointment. And that's where we come in.
At Air One, our VA Central heating contractors understand the importance of maintaining a comfortable environment for your loved ones or employees. We know that your Heating problems can very quickly turn into a health hazard and safety issue. Please note that the Heating contractors of our Northern VA HVAC Company may also perform similar services for commercial heating repairs in Virginia.
We've all jumped into a shower one time or another only to be met by freezing cold water. While we may have blamed it on a relative for taking too long of a shower right before we hopped in, it may be indicative of another problem altogether: an inefficient water heater. Luckily, water heaters are one of our areas of expertise.
Reviews (22)
Serene Kanaan
Serene Kanaan
Jan 04, 2022
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Positive: Professionalism
Wonderful team, professional work, very responsive. Mr Daruish is always on time, he’s very professional, explains any issues clearly and solves them on the spot.
Maya M.
Maya M.
Jan 03, 2022
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Excellent service and workmanship. Requested a quote for installation of two new heat pump/AC units this summer. Dariush provided several options including a couple ways to cut costs. The installers, Ben and Kayvan, arrived on time in the dreaded heat of early August and suffered through the attic installation too. A couple problems arose and Dariush was on site to trouble shoot and resolve the problems. A few months later when I had a question, I received an immediate response. We are very happy with the function of our new systems and the quality of the service.
Jesrael Lopez
Jesrael Lopez
Dec 28, 2021
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Update Dec 2021: Glad purchased maintenance plan, amazing service once again. This time from Darren, great attitude and knowledgeable about his work.
Previos
Amazing professional service will not disappoint. Actually focused on repairing my unit instead of trying to sell me a new one. The time will come when I do need a new unit but not yet. Air One Tech is definitely my to go place from now on with my current unit and when I decide to invest in new one.
Jon D.
Jon D.
Dec 27, 2021
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Over the past few years I have used Air One Tech for all our heating and AC needs. I've had other firms but Air One Tech is far and above the others not only in technical competency but also in "easy-to-deal-with-ness", feeling that they really care about my satisfaction and they are cost competitive. For the past 3 years they have provided the regular maintenance for our heating and AC, and even installed a humidifier. They fixed things that were broken (on our outside AC unit) installed a new thermostat, and provided full explanations of the issues (with photos of parts and of our units) and
Maryam Monfared
Maryam Monfared
Dec 17, 2021
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Consistently outstanding service from Air One Tech’s Dariush and team.
Over the years we have relied on their professionalism and responsiveness to service our old HVAC system and when it was time to replace it with a new one we knew who to call. Dariush thoroughly inspected our home and made thoughtful, educated recommendations. Also recently replaced a family member’s hot water heater.
All went very smoothly.
Dariush and his team are very knowledgeable and really care about what they do. Highly recommend!
Alexandra T.
Alexandra T.
Dec 17, 2021
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Air One Tech has done an outstandingly professional job responding to my short notice request to service and flush my water heater. Alison was very courteous, informative, and simply pleasant to talk to. The technician notified us of his arrival in a timely manner and completed everything very quickly, but very thoroughly. After servicing, the issue was instantly resolved. We also received a very detailed report with pictures and recommendations for the future. Overall, a very professional service. Will refer to in the future.
Greg Young
Greg Young
Dec 12, 2021
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Truly excellent service! After checking a few online reviews, called Air One Tech and got scheduled same day to check out problem with second floor HVAC system. The technician, Darren Christmas, quickly diagnosed the problem and made the necessary repair. He also checked the complete system to be sure there were no other issues and made suggestions regarding future maintenance. Very personable and professional. Highly recommend giving them a call If you need HVAC service!
Sam J.
Sam J.
Oct 19, 2021
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First day of turning the heat on and of course it is not working!! /we called Air One Tech, owner himself came out, furnace needed a part that he had to call his technician to bring it from their store .they went above an beyond to get our heat up and running! we will use them and will recommend them to all our friends and neighbors.
Corie Dickinson
Corie Dickinson
Oct 12, 2021
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They are a great company that takes time to make sure our systems are running as they should twice a year and if we ever have an issue they are right on it.
Nicole S.
Nicole S.
Oct 07, 2021
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I just had AC tune up by Darren, and cant recommend enough!!!! I originally had some damages to the ceiling and my roof adjuster said it is not from the roof, and even though it wasnt part of Darren's work, he went up to check where the water damage is coming from, took great photos so I can send it to adjuster. He also explained and show me how to maintain AC heater unit thoroughly and he was very honest with his recommendations by showing me pictures, but not upselling anything. Really recommend him, and if you use this vendor, make sure to request Darren!!! Thank you so so much Darren!
John G.
John G.
Aug 28, 2021
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Air One Tech comes through again. The technician Mr. Christmas was so knowledgeable and respectful to my family and home. He provided excellent service and gave me real advice on how to maintain my AC unit to ensure it would continue to run properly. The office staff was friendly when making my appointment and worked to get problems fixed ASAP. Such a quality staff and reputable company. I won't go with anyone else.
Stefan S.
Stefan S.
Aug 11, 2021
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Outstanding!! The reviews got me to call Air One and they didn't disappoint. Darren Christmas was the technician who came and listened to the diagnostics that I had done to date narrowing down what I thought was the issue. He did a complete review of the system itself since it is an older system, and gave me his thoughts.
Had been looking for a company for regular maintenance after just buying a condo and I purchased a maintenance contract while he was here.
The part that needs to be replaced will be ordered and he inspected other areas of the system to be cleaned and will take care of
Lauren B.
Lauren B.
Aug 10, 2021
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Amazing customer service and techs! We called them at 8am one morning and they were at our house an hour later. The tech immediately diagnosed and fixed our problem quickly. Can't say enough good things about this company.
Dakota M.
Dakota M.
Jul 28, 2021
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Same day service! We came home to a hot house and we had a newborn. They were able to send a technician out same day and replace what we needed. What a relief! The thermostat was reading 80 something inside the house!

We are so appreciative of the service Air One Tech provided!
Chafik T.
Chafik T.
Jul 14, 2021
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Air one tech team was a life saver. I had a broken HVAC due to storms and kids and wife were in misery. Airone tech showed up same day I called, diagnosed and fixed the problem and got my family back to "life". They also saved me few thousands dollars by accurately diagnosing the real problem although there were a false positive about the compressor being the issue. I am glad I have a maintenance plan with these guys!
M. T.
M. T.
Jun 28, 2021
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I could not have had a better experience. I had my AC (heat pump and air handler) replaced because it died right during a heat wave. Dariush provided an efficient and clear estimate and discussed my options unhurriedly, making sure I had time to ask all the questions I wanted. His staff is utterly professional and kind. They completed the job in the allotted time and with very little noise or disturbance. Mahmoud was unbothered by me watching him change the thermostat (more for my education than anything else) and was very kind to point out the key things I needed to pay attention to in the
Kurt L.
Kurt L.
May 28, 2021
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These guys are responsive, honest, communicate well, and everything worked perfectly. And, the price was extremely reasonable!
The fan was broken and they got the part late on Friday, and came out that same day to install it so that i would not have to deal with the summer heat all weekend. Would use these guys again in a second and recommend them to friends.
Scott R.
Scott R.
May 11, 2021
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I've used Air One Tech for quite a few years now. I found Air One Tech when I wanted a second opinion on furnace maintenance. The first business made it seem like I needed a new furnace ASAP, getting into a service agreement with them was the way to go, the sky was falling, blah, blah, blah. Air One Tech came out and gave me an honest opinion: the system was fine, it just needed some TLC.

Since then they've been my go-to HVAC company. They've never tried to upsell me. They tell me what I need now and what I need to keep an eye on. There have been a few times when they&apos
Susan W.
Susan W.
Dec 08, 2020
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I picked Air One Tech because they're certified for Trane furnaces, and I'm glad I did. I was able to get an appointment the same day. Dariush took the time to diagnosis the problem and explain the different options. After ordering parts, a technician returned the following week to do the repair. He was also courteous and professionaI. I agreed to maintenance plans (there is a separate charge for each system you have) which were worth it because they did much needed cleaning and patched up holes. After payment I immediately received an e-mail confirmation detailing the work done
Timothy L.
Timothy L.
Dec 02, 2020
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I was thoroughly impressed by Darioush and his team. Long story short, they did a great job installing both an air scrubber and whole house steam humidifier for the house we just moved into. They ran into some issues based on the layout of the house (it's almost 40 years old) when installing the humidifier but they went out of their way to make sure everything was done the right way - even though it took much longer than most installs. They came back after the initial install and brought in an electrician to snake wires to other side of the basement to ensure the humidifier was drawing from
Tak K.
Tak K.
Sep 29, 2020
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Dariush and his crew did absolutely wonderful work. My wife and I just purchased a new home, 21 year old hvac system. We got quotes ranging from 38k Carrier infinity system to a 13k goodman system. Dariush didn't try and upsell (some contractors do), he ensured that I understood that cooling and heating capacity are limited by the size of the ducting in the house (only so much air can move through these ducts). He ensured that all work would be permitted (some contractors offered permits as optional... seriously).
The scope of work was
- Replace both gas furnaces with new Trane, equal
Jessica C.
Jessica C.
Jun 29, 2020
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I needed a chemical cleaning of the exterior coil and a regular maintenance checkup and Daniel was top notch. He was professional, courteous, and friendly. He wore a mask and stayed 6 ft from me whenever we had to interact. I am very happy with my service, except he said he would check to see if there was a discount on the yearly maintenance fee since I have electric baseboard heat for the winters. I never heard back from anyone, so I guess the answer is no, there is no discount for only needing a/c maintenance. That is the only reason I gave Air One Tech 4 stars. Otherwise, it would hav been 5