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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

"Computer had been acting up for a while but I kept putting off getting it fixed.  After reading all the great reviews, I decided to give N.A.T.S. a call.  So glad I did.   Jim was able to resolve all my problems remotely - no drop off or pick up necessary - so convenient!  I feel like I have a brand new computer, it runs so well and FAST too.  I couldn't be happier and wouldn't hesitate to use his services again.  My only regret is that I didn't call him sooner.
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"Two technicians arrived at least 30 minutes early without calling before the early arrival. This may it necessary for me to rearrange MY schedule. I don't believe I had the maximum number of windows as stated in the Angielist Big Deal so it was agreed the inner or outer glass of my security back door would be washed instead. I do not believe this was done, so I cleaned the interior and exterior security door glass myself. The technicians did a good job of cleaning the windows. I rated the overall service with a "B" because of the unscheduled early arrival and door glass not being cleaned. I would have preferred to rate this service with A- since I have employed the company in the past without any issues."

"Replaced air conditioning unit. Super nice brought us portable a/c units until installation was completed. Very professional and easy to deal with."

A/C and Heating company in GAITHERBURG, Bethesda, Chevy Chase, Frederick, Germantown, Washingtown DC. Virginia. And all of the DMV area.

"Everything was done quickly and efficiently. No mess, on time and provided overall excellent service and guidance about our dryer vent for further maintenance."

"New installation went well. I was a little upset that only 50% was covered being that the unit was 19 years old. I'm sure that parts for something that old would be hard to find. Replacement was recommended."

We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"Our house is covered by American Home Shield. So, they'll find someone if I need something done to my air conditioner or my heating system. I don't know the cost off hand."

"On day 1, they gutted the old kitchen. Removed old flooring, wallpaper, counter top, sink, etc. The new cabinets were delivered that afternoon. Mario and his assistant were wonderful. They were prompt and courteous. They even took the time to get to know my 2 dogs who barked at them every time they went in and out. Day 2 the new laminate floor was put down and all the new cabinets were put in place. They stayed late to get it all done as the final measurement for the counter top was scheduled for the next day. That happened on Wednesday. The counter top and sink were installed on Saturday. By Wednesday the back splash was placed, the faucet installed, under cabinet lights placed and all appliances were installed and the kitchen was painted. 

The final result far exceeded my expectations."