
ACCA is a group of over 4,000 air conditioning contractors who work together to improve our industry, promote good practices, and keep homes and buildings safe, clean and comfortable. ACCA is the largest association of HVACR contractors and the preferred service provider for members in all 50 states and worldwide.

Headquartered in Arlington, Va., NATE was founded in 1997 as the nation’s largest non-profit certification organization for heating, ventilation, air conditioning and refrigeration technicians. NATE tests technicians while others train. Testing validates the technician‘s knowledge and a training program‘s instruction. NATE-approved testing organizations throughout the U.S. and Canada offer NATE tests. Candidates can earn installation and/or service certification in nine specialty areas: air-conditioning, air distribution, heat pumps, gas heating, oil heating, hydronic gas, hydronic oil, and commercial and light commercial refrigeration.




From start to finish; diagnosis of our dead AC to sales presentation and installation of our new system – everything was so professional.
— D. O'Keefe, Wexford
Installers did an exceptionally neat, well-thought out, professional installation.
—J. DiCole, Monroeville
We appreciate the personalized attention & prompt response to calls. We also appreciate the care the technicians take when working inside the house, like spreading dropcloths and wearing booties over shoes.
—M. and L. Murphy, Sewickley
Prompt service, Saturday installation was great. Servicemen were polite, efficient and did a grat job.
—S. and D. Buzzard, Pittsburgh
We are well pleased with our new furnace. It is so much more quiet than the old furnace.
—H. Beard, Allison Park
The installation took just over 4 hours and the furnace has been all that we hoped it would be. Installers were professional, courteous and left the basement clean- we didn’t have to do anything.
—P. and L. Von Bloch, Pittsburgh
Your employees and very professional and well-trained. After they left, there was no evidence that they had been there- area was completely clean.
—J. Gergich, Pittsburgh
The servicemen were efficient, personal, tidy and considerate. The installation was timely and went smoothly.
—S. Clancy, Sewickley
Installation was done professionally and the installers paid close attention to detail. Very little mess, Mom liked that. Air quality, heat and cooling excellent. Same type of installation was done at my home. That’s why I gave the job to Bolster-DeHart. Don and his crew and Dave W. are GREAT.
P.S. The warranty you get on furnace and air conditioner is a BIG PLUS TOO!
—B. Wannagat, Pittsburgh
All employees were courteous, professional and neat.
—R. Bogel, Pittsburgh
Your company has been taking care of our heating and air conditioning needs for more than 10 years and we have been very satisfied with your service.
—G. Mabunay, Pittsburgh
We provide the highest quality service to the Greater Pittsburgh Area. Click on the map below to see our entire service area.
