Great price and awesome coordination. Mike installed a…read morewhole house humidifier that we had purchased. He was on time, friendly and knowledgeable. I highly recommend Ashburn HVAC!

Update 04/30/26: our heat pump is wonderfully fine, worked great through the winter and spring and…read morenever needed

13 May 2026. Walker arrived on time, promptly provided a reasonable estimate and installed three…read more1/4 turn shut off valves.

I found them through Yelp project among 10 others and after talking to reps I decided to stick with…read moreReddick,because of clear explanations of pricing and upfront fees. It's unbelievable but some companies required upfront deposit even before assessment of the issue. Our technician,Brian,was on time,called prior,came with shoe covers,quickly identified problems with toilet,gave us estimates and couple options to think about. I called next morning and next business day he returned and completed repair. Again on time,very professional and leave no dirt or waste after job. Prices are horribly high now everywhere,but plumbing can't be avoided,so their price point is adequate to area,but service is superb. Can't deduct star for high prices,because they are using gas and supplies which are horrible now.

Purchased a mini-split for my basement renovation when these folks came to my rescue after 3 other…read morecompanies flaked out on me. I can't say enough good things about these folks. The experience and thoughtfulness of their work is terrific. They work with you and answer all your questions and offer advice to help make decisions when you're getting your system modified, installed or repaired. Very prompt service, they're clean and efficient at what they do. They don't try to sell you something you don't need. They are my new HVAC company for my house!

We wanted a regular maintenance check on our 3 year old Trane system and we had concerns that it…read morewas producing louder than normal sounds. However, they came out and assured us everything was in working order. No upselling or additional fees beyond what was agreed upon up front. Great insight, knowledge of the system, and advice. Will definitely call again!

Called Residential Express for a full-system replacement quote in October. Was pleased with the…read moreexperience, which simply involved taking measurements and asking what changes I might want with the setup--much better than the high-pressure sales pitch from the bigger companies in the area. We pushed off the replacement thinking our unit would survive one more winter, but of course of furnace went out unexpectedly in the middle of the night during one of the coldest stints of the season. Called Residential Express the following morning, they pulled up my quote from 4 months prior, verified the price hadn't changed and were able to schedule me for a full HVAC replacement the next day. Freddie and Flavian arrived on time and were very professional moving through our house and working in our backyard and utility closet. They explained any changes they needed to make, went over the new setup and recommended service intervals, and hauled all of the old equipment away, leaving our house looking better than when they arrived. Very happy with our experience with Residential Express and wouldn't hesitate to use them again.

RES installed new HVAC in September 2021. Freezing temps last night and my heat wouldn't kick on…read more Needless to say, it's cold in the house. Literally wearing a sweater and two sweater wraps. New HVAC filter, reset breaker. Thermostat batteries are fine. Still not kicking on. Sent Yelp message to RES because they have always been quick to respond. And they did this time as well and the woman who gave me a call was nice and tried to help. Pretty disappointed that they can't quickly swing by today. From what I've read, it's likely a dirty flame sensor or the ignitor switch (neither of which is a long job - I just don't have the tools). HVAC less than 5 years old, so parts are under warranty with RES; however, I had to call someone else. Bottom line: Someone else is coming today, but I could end up paying for parts. Kind of feels like my current needs weren't lucrative enough for RES to make a concerted effort to swing by.

Richard and his crew replaced our units' 25 year old AC unit. Work was completed quickly,…read moreprofessionally and without hassle to my family (wife was 8 months pregnant). Everything was cleaned up perfectly before they left. He even included removal and disposal of the old unit in his already unbeatable price! For reference, our replacement required a specific (and hard to come by) unit. Richard was half the cost, compared to 3 other contractors, he already knew where to get our hard to find replacement unit (other 3 didn't know for sure if they could/where to get our unit) & best part was he did it all in a week!!! (Other 3 contractors quoted 3-7 weeks) I have already and will continue to ALWAYS recommend Richard and his company to family, friends and strangers. He saves you all your most valuable things! 1) Time 2) Money 3) Stress GO WITH RICHARD!

Richard was great --- he came over the next day, checked and tested my system, gave me some…read morepointers, and fixed the issues (low refrigerant). Pricing was great, and he gave me some options for future improvements. I will certainly be using them in the future.

Our furnace my neighbors advise to call Air Castle. They…read morecame out the same day, found the problem (sensor! I knew it!) and got it fixed. Reasonably priced.

We used Air Castle 10 years ago and were very happy then. We needed some work done recentlyand…read moreCleve came out right away and found the problem right away. He couldn't fix it right away because of a parts issue but has kept us in the loop every step of the way. We are very happy with this company and would highly recommend them!!!

We have been fortunate to have Amar and his team at Air Quality HVAC provide maintenance and…read moresupport to our home's HVAC system for many years now. You can count on honest, reliable, and technically sound solutions from Air Quality HVAC. Our first three appointments (over the course of 2 years) kept an old system alive. During that time, Amar never pushed us to buy a new system and was willing to extend the life of our old HVAC system as long as possible. Eventually the old system needed to be replaced and Amar identified a great replacement system that he installed. We always get great service at a fair price. Additionally, Amar and/or his team members always go over the details and spends time to educate us about the systems during the service visits. Can't say enough positive things about Air Quality HVAC.

Hard to find just a good human being now a days, imagine finding HVAC pro on top of that…read more Rarely, someone would walk you through to check the system when you didn't pay for anything especially after business hours. He did just that and got our heat going. And when asked for compensation, his reply is - just keep up with changing filter on time. God bless you for being a good human being in materialistic world. Thank you!!!

I sent a quote inquiry via Yelp and Residential Express Heating & Air responded with a quick,…read moreaccurate quote. Scheduling was easy and was done directly through the Yelp app. On the day of service, Brice and TJ arrived on time, wore shoe covers inside the house, and walked through the work order. They were done with our duct cleaning in about 2 hours. I requested an additional, same-day service and they were able to accommodate our dryer vent cleaning at the same time. I consider Residential Express's service to be good quality and good value. They were particularly courteous of our pets and reminded us there was a discount coupon available on their website! We currently have an annual HVAC contract with a larger company we are unhappy with. Residential Express Heating & Air offers personalized service and are definitely considering switching our annual HVAC service contract. Thanks again for helping us take care of our home. I highly recommend sending Residential Express a message about your next HVAC project!

It's rare when you find a company that is fair, professional, and does an outstanding job. Starting…read morewith Mary, who quoted us several options and went out of her way to give us fair prices. (Much better than three others.). Daniel and Robert were great as the installation technicians. This is our new favorite for HVAC.

My AC suddenly stopped working yesterday. I checked the AC compressor unit outside my condo and…read morenoticed it wasn't turning on when I switched on the AC. I called BlueStar and they were able to squeeze me in within a few hours. Isaac was able to diagnose the problem quickly and got my AC running. He was very professional and explained the issue. I've been BlueStar customer for several years and will continue to be one for their great service.

Customer service promptly answered all questions. It well well. No issues, installed as expected.read more

Sarma Air did an amazing job with my air conditioning system. They were on time, professional, and…read morevery friendly. The service was quick, and they explained everything clearly. I highly recommend them for anyone needing reliable HVAC work!

From the owner: At Sarma Air Conditioning LLC, we specialize in residential and commercial HVAC solutions designed…read moreto keep your spaces comfortable year-round. From expert installation and fast repairs to preventative maintenance and indoor air quality solutions, we deliver reliable service with a personal touch. What makes us unique? Honest Work, Fair Prices, Lasting Comfort – our promise to every customer Fast, friendly, and flexible service with call or text scheduling Quality craftsmanship backed by years of hands-on experience Indoor Air Quality expertise to keep your home or office healthier When you choose Sarma Air, you’re not just hiring an HVAC company—you’re getting a trusted partner dedicated to your comfort.