We just had our "Spring" tune up and service. Our service technician was Tony Daza. He was…read morecourteous and called to tell us he was on his way. His inspection was thorough and he assured us he would get estimates to us for the services and repairs our HVAC system required. And he did so very quickly. He even did some research with our HVAC system manufacturer, and found there was a warranty on some of our parts. Thus, saving us some money. His estimates made it possible for my wife and me to make an educated and informed decision on which repairs need immediate attention and which can be postponed till later. We would highly recommend Smock Heating And Air.

Tony is extremely professional, efficient, and courteous. He arrives on time consistently, and he…read morereviews the final report very thoroughly. I have used Smock Heating & Air for approximately 10 years and I have always been very happy with my choice for HVAC service! Kevin has always been great as well, and Nancy (in the office) is kind, friendly, and very pleasant. Wonderful experience overall!

So the time came and the cleaners were there promptly. However, it was the guy who was the one I…read morewas msging with that came to the door first. Apparently he had one other cleaner in the van waiting for him to assess the cleaning situation. I did say in my quote that it was a move-out cleaning service to clean one room and two bathrooms and when he came, he said it was for one bathroom which he verified in his quote that it was indeed for two baths. He can't assume that every move-out cleaning service would be empty bc I live there too and would have a service like that anytime someone I rent to would move out. I think that's fair enough. He had me pay more and at this point, I wanted to get it done so I agreed. I did feel as if it was a bait and switch situation. I'd say they did a decent job in cleaning and felt the bathrooms were cleaned to satisfaction. I did feel however that the mopping was done too quick. I wasn't there to supervise since I had to go get ready to head out, but by time I went upstairs, it wasn't like 5-10 mins before I heard him shout out that they were done. Even after the bait and switch prices, I still tipped them. But would I use them again, probably not.

We hired this company for a move-in cleaning, and unfortunately the service did not meet…read moreexpectations. Two cleaners came, but the results were closer to a light day-to-day cleaning rather than the thorough move-in cleaning we paid for. I had already done a post-construction cleaning, and told the cleaners not to move furniture -- just clean visible areas. Still, many areas were missed, including the downstairs cabinets, fridge, and even the bathroom. All the appliances upstairs are brand new, so there wasn't much to do there, but I expected at least basic attention to detail elsewhere. They wore their shoes inside during cleaning until I had to ask them to remove them. They mopped with so much water that puddles ("water ponds") were left on the floor. When I spoke with the owner afterward, I was told that things I would normally expect in a move-in clean -- like window tracks, cabinets, and wall wiping -- were not included. Overall, it seems they are only set up for very basic surface cleaning (like making the bed or wiping counters), not a proper move-in clean. I paid full price, so lesson learned -- but I cannot recommend them for anyone looking for professional move-in or deep cleaning services.

We called Frederick heating and AC to install an eco bee and ended up getting a pretty good quote…read moreon a new downstairs AC unit. We ended up signing for it and they came back early the next day for install. The guys were very professional and taught us how to use the ecobee. Our unit is working wonderfully and we are very pleased with the entire process.

From first contact with Frederick Heating and Air I have been really pleased. They are very quick…read moreto respond, professional and honest. We got several estimates for replacing our furnace and a/c. This was the one company I didn't feel like I was dealing with used car sales men who were trying to rip me off. I felt like they were honest about what I needed, didn't try and up sell me things I didn't need and respectful when I asked for time to consider my options. Once we decided to go with them they scheduled us with in a week. The install was fast and I barely even knew they were in the house. Everything is working great and we are really happy that we decided to go with a local company. I am very picky and do extensive research before any major purchase. Frederick Heating and Air has excellent reviews, provide a great value, excellent warranty and professional service.

Yesterday Repairmax, Gaithersburg, MD, installed my Carrier Oil Furnace, Carrier Heat Pump, Carrier…read moreEvaporator, Carrier Edge Series Programmable Thermidistat, Aprilaire 400A Humidifier, and Trane Clean Effects air filter. They also added a return duct from my (humid) basement to replace my old (dead) dehumidifier. They also accomplished additional tasks to meet current code requirements in my 37 year old home in Rockville, MD. I am a retired Navy Submariner that has spent many years involved in the design, operation, maintenance, and repair of many complex mechanical and electrical systems, to include A/C and refrigeration equipments. I consider myself quite demanding as to work quality and overall correctness. I am 100% satisfied with the installation Repairmax completed at my home yesterday. They were professional in both their work performance and in their communications with me during the (long) day. I would highly recommend Repairmax based on my dealings with them over the past few weeks.

Repaired our A/C on short notice. They arrived when they said they would, went straight to work,…read moreand did a good job. All at a cheaper price quoted by a place that diagnosed it on Friday, but couldn't fix it until Monday.

Extremely satisfy and highly recommended…read more My HVAC didn't work properly, and my usual handyman could able to fix it. So, I searched on Yelp and found this company to give me a free estimate. He came on time, polite, and seems very knowledgeable. He uses shoe cover (I am a picky person), which I really appreciate. He fixed my HVAC in a timely manner. He charged very reasonably. I am happy with his service and will definitely use him again.

Our home warranty company sent this HVAC company to diagnose a system that was running almost…read morenonstop. Instead of addressing my concerns, the technician repeatedly explained basic HVAC concepts in a condescending and disrespectful manner, insisting nothing was wrong except that it needed freon. He told me the warranty company would only cover $10 worth, and I would be responsible for the rest - this was a complete lie. I specifically asked if there were any leaks, rust, or other issues, and he said there were none. After he left, I inspected the outdoor unit and found what appeared to be multiple leaks, freon residue on the copper lines, and rust in several places. To make matters worse, he spoke so loudly that my wife could hear the conversation from inside the house. He seemed irritated the entire visit and was neither friendly nor helpful. I would not recommend this company.

Comfort Zone has taken care of our Heating / Cooling System for years and they installed a…read morecompletely new System when it was time. They did a very professional job on the new install. Everything was meticulously planned out and executed flawlessly. We couldn't be happier and we highly recommend Comfort Zone!

Comfort Zone (301-570-4957) is simply amazing. They came out when our AC died unexpectedly mid…read moreAugust. They showed up on a Friday night afterhours to see how they can help. We interviewed 3 different companies and they were top notch, hands down. They are a husband/wife team (go girl in this business). Mike and Gretta are honest and hard workers. They gave a recommendation and answered my 100 questions. I was ready to install a much more expensive unit and they explained why that was not necessary. I just paid them and the cost was THOUSANDS less than the next estimate. My house was cool again within hours of completion. The area was clean and you'd never know that someone was there. They are patient, extremely knowledgeable and I felt that they only want to do what's best for me. I truly felt like I was their only client. I highly recommend them for service, installation or at least include them in a quote search. As an added bonus, they were able to install my new unit so compactly (if that's a word) that I gained new storage space. Love them.

Last spring, we called Frederick Air to have a problem with our system diagnosed. I was not cooling…read moreeffectively. A friend who knew HVAC but was not licensed had already told us our compressor was fine. The tech Frederick Air sent out to diagnose our problem said we needed a new compressor and recommended a whole new system because our system was 15 years old and would only be a matter of time before other parts failed. If I hadn't known better, we would have paid thousands for a repair that actually only cost hundreds. Would our problem have been fixed with a new system? Yes, but at what cost? If we had replaced only the compressor that they said wasn't working, it wouldn't have fixed the problem, and they would have sold us an entire new system anyway. The company we ended up using found a leak, repaired it, recharged the coolant, and our house kept cool throughout the entire summer. If Frederick Air suggests an expensive new system, get a second opinion. How will you know if that is what you really need without a second opinion?

Avery was very knowledgeable and showed pictures of each area that was inspected or serviced. He…read moreanswered all my questions and really helped me understand hvac systems.

Great experience! After dealing with our heat going out and the heartache from the contractor sent…read moreby our home warranty, Donmar came in to save the day! They quickly diagnosed and resolved the issue. He was so thorough he even stayed a little while to monitor to be certain there were no other issues. Will definitely use them again if needed!

Do not call these people. This husband and wife team are rude, and unprofessional and not even…read moresure if this guy is licensed! Go find a professional.