Well after having a new heat pump installed we added a new thermostat…read more Nate who installed it really knows his stuff He explains everything to my wife so she could understand how to use It (She is not tech savvy ) And he did a great job repairing our humidifier. Hagerstown Heating and Cooling again did not disappoint. I highly recommend them Gary Cohen

First of all there was no delayed response you posted the same day that I did. If you didn't think…read morepeople used Yelp, then why did you respond so quickly. Yes That is my name. That is just a bold-faced lie Sir. I talked to Matt all the time and mentioned the issues that I had at the time of installation. Nothing was done. The initial work order had something to the affect of move unit 2 feet to the right to accommodate the 4-inch box filter that I wanted installed because we had pets. I changed the location of where you wanted to put it so as to facilitate the drain from the unit, the running of which looks like crap (see picture) Why would I need a maintenance plan to change filters? The Filter never did fit correctly if you will look at your service records you will see that Daniel came to do a service to our unit and cobbled together something to keep the filter in place which it was not doing. Yes he wanted to open the closed system and remove the coil and take a chance introducing contaminates into it. How often do you open a sealed system just to clean a coil I don't believe I ever did. And He wanted to charge $1400 and take a day or so to do it. Again not true I asked if he could spray some calclean from the top of the coil as I have done for the last twenty years that I have been in the industry and none of the water the he sprinkled on the upper side of the coil even got into it. and the technician gave in and DOCUMENTED, that the cleaning was worthless And yet after saying that what he did was worthless he still charged me $419. I took my Electrical Apprenticeship in 1982 I took my HVAC Mechanic apprenticeship in 1990 and have been working in building maintenance since 1986. I am a professional for the last 40 years and If I did some work that was worthless, I could not in good consciousness charge the customer for that work. Your installation guys ran the thermostat in the open in my closet after they said they would put it inside the wall(the original tstat wire was in the closet and I wanted it in the wall ) I believe I addressed all the points you bought up on this not used forum. Have a great Day John. Thanks for putting my name and Address out here (not very professional)on this not used forum. Where do you live?

Exceptional and Honest Local Service"I cannot recommend Markool Heating & Cooling enough! They were…read moreprompt, incredibly professional, and truly care about getting the job done right without overcharging. As a smaller local business, you get highly personalized care and direct communication with the people actually doing the work. They are my go-to for all HVAC needs."

I called on a Friday after being recommended here. My central air conditioning unit in my home had…read morebeen running constantly and often would be higher than what it was set at. I was booked for that Monday! The day of my appointment, I was called several hours before my appointment to say they had an earlier than expected time slot and wanted to know if they could come now. Unfortunately I couldn't do earlier than scheduled but appreciated them asking! My time slot was 4-6 pm. They showed up at 4:05! Wow! I can't tell you how many times companies give time slots and show up hours AFTER the time frame. But not Markool! They are on it! Jorge and Jose were my technicians. They were both very friendly and went right to diagnosing the issue. After about 30 minutes, they figured out I needed Freon. I asked the pricing and they had a tablet to look up the pricing right away. If you need Freon be warned it's expensive! Not this company's fault though it seems to be commonly expensive when I looked online out of curiosity. These two technicians were knowledgeable and explained everything. They were super polite as well. They emailed me my invoice with pictures of everything they did today. I highly recommend Markool for your cooking needs!

Service was fantastic! Tyler was very efficient, courteous and knowledgeable…read more I would recommend Premier to my friends. Thank you.

we started with a five year-old unit purchased from a company they bought a couple of years ago…read more Unfortunately, the unit was no longer operating, and premier determined it was a coil issue. The good news was it was under warranty, and we would only be responsible for the coolant and the labour. That estimate and the upselling of a warranty program that would give us a discount on their hourly labour ran $700 before they ordered the coil. The coil arrived and our bill was $2400. $350 of that was coolant, and the flat rate labour charge was a little over $2000 for one technician working 2 1/2 hours. That's right, over $800 an hour. My reason for posting this is that if you use these people, and they are giving you fixed rate labour for the repair, consider getting a second bid according to Google the hourly rate in Greencastle as of August 2026 is between $75 and $160 an hour. The technician, Brady, couldn't have been better or nice nicer. The problem is not with their people or their work. The problem is they have taken what most people do hourly and made it a fixed rate for labour and hope that you do not notice. Unfortunately, I noticed too late. Please learn from my mistake. Consider going elsewhere or at least getting a second bid.

Bill Humm is responsive to calls, kind, polite, and clean. Every time he's serviced our furnace,…read morewe've been happy with his work. He is timely, barring any prior emergencies from other customers. Speaking of emergencies, he is good about following up on our emergency heating call! I am a woman and feel safe with him in my house. I want to say that we've had other HVAC repair persons come to do servicing of our furnace over the years and we've found trash left behind. Some have left here with some of the servicing tasks not done even though saying it's been done. Not ok! Bottom line: my husband and I will continue to have Bill Humm of Kretzer's's heating come back!

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.

These guys are AWESOME! Impeccable, professional and…read morefriendly service. I'm totally appreciative for their emergency service. They got my Septic empied and repaired in no time. I highly recommend them. They also give impeccable well water services!!! Thank you guys!!!!

3/12/2026: Austin is fantastic! He checked out my units, replaced filters, tweaked a small issue,…read moreand answered my questions. He is a very nice and personable young man. I thoroughly enjoyed his visit and am very happy with the work he did. ******************************************** 2/25/2026: Brandon was great! He was so helpful with questions about a tub issue and quoted me a very reasonable price. He checked my unit, tested the water in my reverse osmosis, and helped me change the date for a service call. Brandon is outstanding!

McCray installed the HVAC systems in our relatively new subdivision. After this hard winter, we…read morescheduled a maintenance check on both our heating and cooling systems. So glad we did! Their office was able to schedule an appointment promptly. They followed up with text and email confirmations and updates on the arrival of the assigned technician. Daniel B, the technician, also followed up before his arrival. He arrived as scheduled and went straight to work. He was very professional and knowledgeable and took the time to explain what actions he had taken and what he recommended for us to do in the future. We are confident that we are prepared for the coming spring and summer weather and then into next winter. We will definitely follow up with an annual check up.

Scheduling an appointment was easy. A technician came, and the estimate was promised within 1-3…read moredays. 10 days later, still nothing. I wouldn't complain or judge McCrea's price, even if I got it; I can't judge their cost model. But at least have the respect for the customers who rearranged their schedules and spent time with you, and whom you promised to help.

Service was exceptional! Our Heat Pump quit working and we called Total Comfort. We have had…read morerepair experience with them and we were very happy with their work. They always responded in reasonable time to help. Our previous system was 21 years old so a new one was needed. We were given a quote for a new system very quickly and installation was scheduled within days. The technicians were very pleasant, friendly, professional and respectful. They checked that everything was working perfectly and that we were happy. Even to the point of repositioning the thermostat to my wife's liking. I highly recommend Total Comfort. They deserve more than 5 stars.

My air conditioner stopped working and I called Total Comfort the next day. The service technician…read morearrived around 3:15 that afternoon. He immediately found the problem and my air conditioner was fixed within the hour. He was personable, courteous and very efficient. He explained everything and how much it would cost. I would recommend Total Comfort to everyone who needs this service.