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!"

"Done Right Today texted me just minutes after I searched on Angie's List with my emergency request, which was after 10pm. It was such a relief to know my repair could be done the next day. Ryan called the following morning, and he and Nick were at my door within an hour. They are very professional and knowledgeable, and gave me two options for replacement of my sump pump and check valve. They had all the necessary equipment in their truck and took less than an hour to have the replacement installed and everything running perfectly. Would definitely recommend, and hire again!! Thank you, Annie's List, for a perfect match!"

"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"

"The crew was on time, and ready to work, got everything out with no hassle or problems, in & out in a breeze, reasonable rates.Huss removal of garbage and old furniture."

"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."

"Woke up with no heat! Right before Christmas! Harris responded instantly and sent out someone to check the problem. Due to incorrect installation, rain had gotten into the improperly sealed roof vents, which in turned fried the transformer, inducer and circuit board. They were at my place bright and early the next morning installing a brand new furnace, more efficient and quieter, with a 10 year warranty. Arranged financing and were finished by 3pm. Everyone from my first phone call to the last service tech was professional, polite, knowledgeable and all around pleasant and really nice people. They will be my go to for heating, AC, plumbing and electrical from here on in. Glad I found them!"

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.

"Fast, efficient, clean work, and fair price. Would use again."