Get matched with top nest installation pros in Clear Spring, MD

"My overall experience was excellent! From the very beginning, the salesman, Austin, was absolutely amazing very knowledgeable, very pleasant and went way above and beyond to get things ready for my installation of a new heat pump system.The installation crew that came the following day was also absolutely amazing. I would highly recommend this company to anybody and will definitely contact them with any additional needs I may have. I’d like to thank each and every one of them for doing such an excellent, professional job."

"I was having trouble with one of the zones in my house with our alarm we purchased with ADT Premier Provider. Ryan came out and checked the system and the battery in the control box; and those were all good. He determined that the sensor on the slider door was the problem. He cleaned the track, reinstalled the sensor on the door and secured it. The last thing he did that put his service OVER THE TOP was that he knocked down a large wasp nest that was in an area I couldn't reach even with a ladder. This was the best customer service we’ve seen in a long time!!"

"I was able to integrate my Google Nest cameras with my ADT Home Security System. This is a match made in heaven! No more wondering why the dogs are barking outside or who is cutting through the backyard. Very very pleased with the products and the benefit it brings us."

"Great installation, very efficient. I surely would recommend them."

"Well first he showed up on time came out in bad weather. Installed both appliances quickly and was very reasonable. I will use him again!! Ken King"

"Amazing work was quick about it and professional. Definitely recommend. Had an attic fan installed."

"Excellent experience. I had them come out to install whole house surge protection. They arrived on time and had it done in less than 30 mins!"

Welcome to Markool Heating & Cooling. We proudly provide the highest quality of service and craftsmanship for each aspect of your project. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text, or email today, and let us get started!

"The whole house could hear the vibration when our two year old Tran xv20i heat pump was at 67% work load. It seems the issue started from day one it was installed. Tried to reach out the installer but they went under. In June, I called McCrea. Mark Dzbynski came over, carefully checked everything and then concluded that refrigerant was not charged to the correct capacity. He explained that our system line is longer than usually and additional refrigerant is needed to compensate the length. He carefully calculated and addded the correct amount based on the temperate & length. From June and Oct, the vigration never came back. No one can tell when the system is on because it works so quietly. I really appraicate the work done by Mark and his work ethinics. Very pleased!"

"Mr. McCarthy is an excellent electrical professional. The installation of three recessed light fixtures over a counter top in the kitchen went extremely well. He assessed the most convenient place to install the light switch, made the minimum amount of drywall cuts (only one, which was welcomed), and located the fixtures in the perfect spots to give us the right lighting. Even though the work did require cutting dry wall, at the end there was minimal cleanup on his part. I was well pleased with work and the cost was extremely reasonable."