I think this is number one company in north Virginia I…read morechanged my house AC Two units they did amazing job Wonderful people high quality service very knowledgeable and very respectful to the customer to keep them satisfied Iam glad to did business with them. Thanks

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.

I'm very pleased with the service that Saul provided and would definitely use Tim Whistler Plumbing…read more& Gas Fitting in the future. There was an initial mixup about the appointment time, but that was soon sorted, and Saul contacted me prior to his arrival and arrived on time. Quickly getting to work, he identified the problem with our gas insert. He was able to fix the immediate problem to return it to working order and then explained what was happening and why. He also provided what next steps would be for a more permanent solution. It was a very professional, friendly service call.

They are professional, punctual, knowledgeable and do good quality work. I very much respect the…read moretechnician, but the problem appears to lie with the company's practices and fees. The main problem and downside is that they are very expensive and overcharge. Despite the Yelp page saying that the company provides a "free estimate", I was quoted $49 for the technician to travel. In addition, if I had not chosen to go ahead with the repair, the company would have charged me an additional $150 diagnostic fee. Essentially, despite the yelp profile stating a "free estimate", it will cost you closer to $200 to get a quote. I see this as false advertisement. In addition, when the technician concluded that the problem was the capacitor, I received a final quote of $600. When I googled the price of the same capacitor online, the price range was in between 75$ - 150$. Essentially, they are charging a premium of at least $450 per replacement for a single part (capacitor). Despite their professionalism and quality work, I do not recommend this company for the reasons stated above. If price is not a concern for you, and you would rather pay twice the market value for a job then you should definitely choose them. EDIT: I actually googled the price of a capacitor and offered to buy my own. I was told that by the technician that if I purchased my own capacitor that the company would not install it. In conclusion, they did not address any of my concerns. Unfortunately, after reading the other bad reviews, there seems to be a consistent pattern of discrepancies between what they tell customers and what they instruct technicians to say on site. Making an honest living is so much more rewarding than making it dishonest living.

Absolutely outstanding service from C.D. Shanahan's. Armando, Juan, and Elijah were incredible!…read moreArmando and Juan from C.D. Shanahan's HVAC, Plumbing, Electrical & Remodeling LLC came out right before an impending severe snowstorm and worked in sub-15° weather from 8 AM to 8 PM to uninstall our broken Heat Pump and Air Handler and replace them with a brand new Heat Pump and Air Handler. Simply put: these guys were the best. Incredibly professional, hardworking, and dedicated from start to finish. They didn't rush a single step. They also helped install a new thermostat, made sure everything was running smoothly, and ran all the necessary tests to ensure the system was operating perfectly before they left. Huge shoutout to Elijah as well!. He took the time to explain everything in detail about the humidifier, thermostat, and Air Handler, and gave us genuinely valuable maintenance tips that made us feel confident moving forward. C.D. Shanahan is probably the best HVAC company you've never heard of. If you want a team that shows up, works hard, communicates clearly, and takes real pride in doing the job right. Highly recommend.

C.D. Shanahan's technician visited my place and did diagnostic, but I had move questions about…read morecompressor and refrigerant pressure and sent an email to C.D. Shanahan's email after receiving quote. But then I did not have any responses for my questions for a week. Maybe, they are busy and did not read my email yet. Brandon's diagnostic was great, but I am not getting responses for my emails before making my decision.

Mike w/ AG Heating & Cooling and his partner were great! They arrived on time and replaced my…read more35-year old system per our agreed Statement of Work & price. I will definitely reach back out to them for any future HVAC needs. Highly recommend!

chose AG Heating Cooling Duct Cleaning in 2025 because their quote was cheaper than other…read morecompanies. I paid approximately $7,900 for the installation of a new Trane HVAC system. Unfortunately, this turned out to be a very expensive mistake. The Trane air conditioning system they installed had refrigerant leaks from the very beginning due to poor installation workmanship. The company promised a one-year warranty and service support, but they never came to inspect the system despite multiple requests. Because we have another HVAC unit serving the attic and the outdoor temperatures were not extremely high for much of the year, we did not realize there was a problem until the summer of 2026, when the weather became much hotter. At that point, we discovered that the newly installed system had essentially lost all of its refrigerant and was barely providing any cooling. After contacting AG again, they finally came out but charged additional fees for leak detection. Even after charging for diagnostics, they were unable to identify any leaks. Instead, they attempted to sell me an additional "leak sealant" service for approximately $395, which I declined. I then hired another HVAC company. They were able to quickly locate two refrigerant leaks, both at the original brazed joints installed by AG. These leaks were found directly at the installation connections and strongly suggest poor workmanship during the original installation. After I provided this information and evidence to AG, the company stopped responding entirely and ignored all further communications. As a result of the prolonged refrigerant loss, I am now concerned that the compressor may also have suffered damage from operating under low refrigerant conditions. I strongly recommend that homeowners carefully consider other HVAC contractors before hiring this company. A lower initial price is not worth poor workmanship, lack of warranty support, unnecessary additional charges, and being abandoned when serious installation problems are discovered. Extremely disappointed with the installation quality, customer service, and accountability. I have photos, videos, and leak test results confirming that the leaks originated from the original installation joints. Please think carefully before trusting this company with a major HVAC installation. ------------------------------------------------------------------------ This response does not address the actual facts. I requested an inspection only two months after installation because I was concerned the system was not operating properly. The company refused to come out. Less than one year after installation, the system had lost essentially all of its refrigerant. After AG charged me $220 for leak detection and failed to locate the leaks, another licensed HVAC company found two leaks at the original brazed joints installed by AG. These were installation-related leaks, not "third-party errors." No third party had worked on or altered those joints before the leaks were discovered. The company later offered to refund the $220 leak-detection fee if I deleted my review. I refused. Instead of accusing the customer of intimidation, the company should explain why a newly installed system lost its refrigerant, why it refused to inspect the system when first contacted, and why another company was able to quickly find two leaks at AG's original brazed connections.

Excellent service. Responded in minutes and fixed the issue. Highly recommended. Thank you!read more

Easy to schedule an appointment. Prompt and professional…read moreservice. I would recommend!

We have mixed experiences with company, trending negative…read more We called them last summer for an AC issue which they fixed promptly and at reasonable cost. A request this winter for routine furnace check up couldn't be scheduled until four weeks later. At that time also asked for an estimate for furnace replacement for which a tech was available the same day. Tech promised to send us a quote that night - the quote never arrived despite multiple requests. The tech who came out for the routine check up verified our observation that the control panel of the humidifier was not working and promised to send us a quote for replacement. Guess what - quote never arrived. We paid $205 + credit card fees for the visit but never received a statement of work or even a receipt. On the plus side the techs come out at the scheduled time, seem knowledgeable, and behave professionally. Too bad they don't have time to send out promised quotes!

Old school organization that has been around for years! We have been using this company for a long…read moretime and have always been super happy with the outcome.

I hired John Nugent & Sons of McLean, VA to work on my mini-splits because the units had stopped…read moreblowing cold air. They sent Jonathan "Jona" Garay to my house. He tested for system leaks and found none. He researched until he was able to fix the problem, which saved me from having to install a new system, which would have been prohibitive for me. In the future, I will request Jona for any plumbing-related issues. Rosemary D

And zero surprise to no one, I don't need any repairs to my HVAC. Had another reputable, family…read moreowned HVAC company come up and tell me that there is absolutely nothing wrong with my unit. John Nugent & Sons was going to try and charge me $633 for work that was not needed. Be careful with these people and find another reputable company to do business with.

Responsive and great work to fix my AC! Technician did a wonderful job, was professional, kind, and…read morehelpful. I recommend without hesitation

The true quality of a company is revealed when something goes wrong. And in this case it did and…read morethe results were bad. I hired the company to repair my washer. Diagnosis visit was great. Not so good after that. First repair appointment was cancelled during my scheduled appointment window because the part wasn't in yet. Second repair appointment, Mohamed showed up for the repair only to realize he had picked up the wrong part. The worst part was how he handled it. He said he had to drive back to Alexandria to get the right part. I had another contractor appointment at another property and told him my schedule was very challenging. He immediately became angry and literally started yelling at me. Said he was very busy too and this was messing up his whole schedule, exclaiming that it wasn't his fault. I was hoping to discuss our schedules to figure something out but he was losing it. I was trying to figure out what to do and he was yelling, "decide! decide!". Overwhelmed, I decided I would tell him go get it and come back and I'd try to figure out a solution in the meantime. After he left, I messaged the company and asked that they send another tech. They didn't have another tech. They refused to answer the phone and were not apologetic. Fortunately I was able to get my husband to come home from work and be there. At this point I was very upset and didn't ever want to see that man again. When Mohamed returned he fixed the dryer and apologized to my husband, but not to me, even though he was still texting me. Said he was really stressed. A little over a month later the part failed. It made me sick that we had to go back to the same company. They again said they didn't have another tech so again I had my husband be there for the appointment. I realized that likely there is only one Mohamed and the owner and tech are the same person. In spite of everything that had happened - the canceled appointment during the appointment time, showing up with the wrong part and yelling at me for it - he charged us $79 trip charge to replace the failed part. Said his labor warranty was 30 days. Here he had an opportunity to do something to compensate for his previous behavior and last minute cancellations, but he chose not to. I will never use this company again and do not recommend at all. So many good reviews but when things go wrong, beware.