Get matched with top thermostat installers and replacers in Devon, PA

"Very professional and replaced my hot water heater and installed a new toilet in about 2 1/2 hours Highly recommend!"

"Excellent customer service. Immediate response to air conditioning problems I then replaced the whole system I will use them for gas heater tune up in the fall A. Breese Coatesville PA"

"Air conditioner inspected and repaired."

"Christian, the technician was professional, personable, helpful, knowledgeable, thorough and explained each procedure, answering all of my questions. He cleaned up as he worked, and left the rooms where he worked in excellent condition. When I had a question, my calls were answered promptly by office workers or Gary, the owner. I felt heard and accommodations were made to my satisfaction."

"Mike is very responsive and I didn't get the usual upsell that I received from other businesses. He just fixed my furnace, explained why it would need to be replaced soon, and provided a clean quote for a system that met my needs."

"Lee Barnes was very knowledgeable explained all aspects of new hvac system install. And answered all our questions. Provided good options and recommendations based on our requirements. promptly scheduled install on our time line. The installation crew was on time and very professional. They made sure the property was kept clean during and after install."

"Chris the technician was professional, friendly and courteous. He explained the problem, showed me the cost and got it fixed quickly. I needed a new thermocouple."

"When I turned my A/C on for the season, the system wasn?t cooling. I had a tech come out and I was told that the system had a leak. Because the age of my system, I decided to replace it with a new one. The team at Green Air Concepts were prompt, neat, and they were very nice people. They did an amazing job, and my house is now cooling beautifully."

We are a leader in quality high efficiency Air conditioning and heating system installations. We do it the right way and provide financing options to make it affordable for our customers to upgrade and save money in the long run.

In 1972, Donnelly’s Cooling, Heating & Plumbing began serving Pennsylvania residents with premier plumbing services and later expanded to add their superior HVAC services. As the area’s top choice for plumbing, heating, and cooling service, we’re proud to offer unmatched professionalism and quality results.\n\nWith same-day and emergency services, our team is always available for your home service needs. Plus, with service for all brands and free estimates, you can trust you’re in excellent hands with our team.