Get matched with top central humidifier installers and replacers in Cavetown, MD

"Great installers precessional and respectful"

"Very well. Was provided estimates for new system replacement in the near future when we decided to do that. The service technician (JohnKline) was very professional and was a pleasure to deal with. I highly recommend him. The company is lucky to have him as an employee!"

"Just started working with Markool this summer and they have been fantastic! When I need service, they are so fast and every person we have interacted with has been polite, knowledgeable and personable. We unexpectedly needed to replace our system during a heat wave and they were super. So responsive and quick. I would highly recommend Markool for all of your HVAC needs!"

We are a small family owned Heating, Ventilation, and Air Conditioning (HVAC) company located in Sharpsburg, MD. The business was started in 1989 under the name of RW Harrell's Pump Service Inc. when Diane Harrell and Ronnie Harrell purchased a well pump and water system business from a gentleman that was retiring. Ronnie had worked in the HVAC field from the time he had graduated from high school so it was natural to add HVAC to the services that this new company would offer. Ronnie and Diane built the company by word of mouth and continue to grow the company in this manner. Additional DBA - Harrell's Services. Additional fax - 928-492-8004

Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!

"Our furnace finally bit the dust after 25 years of faithful service. I had TriState do several small repairs and maintenance on it over the years, and they always did a good job. So, when the last service rep told me it was finally beyond repair, we consulted with Comfort Specialist, Darren, who isn't just a salesman, but previously installed and repaired HVAC systems. He took lots of measurements, inspected the old unit and the runs to the outside and upstairs. He took his time making calculations and offered us several options on a new system. TriState uses Daikin furnaces, which are rated in the top 5 furnaces for dependability and efficiency. The price, I thought, compared to my two other neighbors, who also recently purchased new systems, was even lower than I thought it going to be. In fact, my neighbors paid more (by thousands) and have a smaller square footage footprint than my house. We've had the unit now for over a month, and so far, it's great. It is a one-zone system, yet the upstairs will only vary by one or two degrees. This is much better than the old unit. We're hoping this small variance in temperature will also apply when the AC is on in the summer. The installers were very professional, arrived on time and completed the work in a timely manner. I would definitely use TriState again, and will rely on them whenever I need service."

"He was very courteous and accomodating. Picked up my computer from my home and returned it to me. He even helped me later with another issue via text message and remote access--I just had to replace my mouse and keyboard.  I will definitely use his services again, unfortunately because I am having some trouble with a laptop now.
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"Alder Cruz and his company American Air is our HVAC Company. Alder has taken care of our HVAC needs since his first visit to our home @2015. He uncovered an intermittent problem with our system that was not found by several other specialists/companies. We were spending over $300 monthly having different people trying to help us. Alders persistence and technical skills are top notch! He continues to provide us superior service. He has replaced both our heating systems. One system was switched from gas to electric. He made it so easy for us. They respectfully cleaned up any mess they made. Work is performed on time and within budget. We unhesitatingly recommend American Air / Alder Cruz for all your HVAC needs. ~Tom & Deb Canfield"

"Robert called when he was enroute and arrived early. Hired him as an electrician for the day. During the day he replaced 2 ceiling fans and replaced 5 outside lights on the porch, garage, and back porch. He replaced a fuse for the ceiling fan, and changed out the front doorbell switch after trouble shooting it. He replaced a smoke detector and he replaced two light fixtures in our bathrooms. After completing all electrical work early, he gladly changed out a faucet in the powder room, and put up new 3-piece bathroom fixtures in all three bathrooms. All in a day's work. Robert was very professional the entire period and only stopped work after his 7 hours were up. Would gladly recommend his proficient and professional service. Terry Reid (Col USMC retired)"

"He replaced the dining room dimmer light switch. He didn't have the correct replacement one I needed so he's coming back to install the correct one."