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.

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.

Quick and professional. They came right away after I call. Highly recommended for serviceread more

I highly recommend this business whenever you have ac issues! After getting a couple of scamming…read morebusinesses only interested in taking your money, and not helping, we found MD Heating and Cooling in Ellicott City. They were very professional and experienced and fixed the issue quickly. Thank you, Debbie.

Edwin responded quickly to my Yelp chat, and was willing to go through the extra effort to squeeze…read moreme in on the same day! He arrived a few minutes early, looked at the AC and quickly realized it was not the problem I thought it was. He was rapidly able to troubleshoot and within 15 minutes Edwin had diagnosed the actual problem. My AC is all fixed and working now! :-) I am so pleased with the skill and professionalism shown by ESP, that I am also considering them for some of my long-term heating needs. They will definitely be my first call for AC issues going forward! Thank-you Edwin!

Edwin quickly diagnosed a problem that another HVAC technician from another company had caused. He…read morecame back to fix it the next day and now our AC works great. I highly recommend Edwin.

Pablo, did my ac repair and now my house is very comfortable. He also performed quality workmanship…read moreand not too expensive!

Absolutely excellent work and great price. Pablo came out immediately and solved my problem…read more Leaking hot water heater valve changed it and we had water again. Thank you !

When my AC failed, Mike himself came out the day after I first called and a day where temperatures…read morewere approaching 100. While other companies blew me off until their schedule was clear (well into the next week), Mike didn't want me to suffer. He arrived on time, walked me through what he was doing, had the tools and part he needed on hand. Very knowledgeable and polite. Like any good business person, he said my 15 year old unit needed to be replaced, which is true. He did get the AC unit working and I will definitely call him to install a new unit!

Heater died and Mike and his team were able to get a new gas heater installed in just a few days…read more It wasn't cheap, but it was a big job and they did it very well. You might be able to find lower quotes, but don't sacrifice quality for a slightly better price.

Vic came through and didn't try to upsell me. He was super busy and helped clear my condensate…read moredrain line with nitrogen (he carried a nitrogen tank capable of delivering high pressure to clear out debris). Also said my coils were extremely dirty and he didn't have the time that day to clean it but said I could look it up. Luckily, I was able to do that myself. Also, his price was fair and in line with other HVAC guys but I feel he is more honest. This was my second time using Vic and I'll use him a third time whenever an issue occurs.

Excellent Excellent Excellent!!! Vic came through with a short notice and was very knowledgeable on…read morethe issue. I highly recommend!