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

"Our oil heater went out in a snow storm. They were VERY helpful, and got our heater installed quickly! I would recommend Old Skool HVAC to anyone looking for affordable, dependable service! Thank you Old Skool!!"

"The company response my inquiry immediately after a send. Come same day to check and Complete installation next day. Very professional and high efficiency. But, feel price is not cheapest."

"These guys were professional and prompt. They answered all my questions and explained everything step by step. No question was dumbed to them. I hired them because my air condition was not blowing cold. They found a leak and we were losing refrigerant. Could have been repaired and refrigerant replaced but my system used an outdated refrigerant and pricey. Strive for Service installed a new Goodman air conditioning compressor and coil. Everything was great and the price was reasonable and I checked. I I I Will definitely hire again!"

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

"Air conditioner inspected and repaired."

"I am so lucky I found David!! As a new first time homeowner I was simply overwhelmed with all of the projects we needed to take on both large and small. David has been communicative, considerate, and so helpful throughout the process of meeting, estimating, and getting to work on our list of projects ranging from interior painting, drywall repair, flooring installation, structural improvements, patching screens, installing appliances, and more. I really appreciate how he walks me through processes I'm not familiar with and makes suggestions- so helpful for a new homeowner who is out of her depth! David and his crew got to work quickly, show up on time, and do flawless work with a smile. Prices are very reasonable and estimates are clear with no surprises. We love working with David and his team and he will be our go to for all of our projects in the future!"

"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."

"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."

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.

Experience The Horizon Difference.\n\nOn-Time Service. Up-Front Pricing. And The Job Done Right and Clean the First Time. GUARANTEED!\n\nHorizon Services is the region's largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizons Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee.\n