Get matched with top central a/c installers in Hatfield, PA

"Andrew replaced our heating and cooling system and went above and beyond. He ran into a lot of faulty wiring from the previous installation and made everything right so we have a safe and functioning unit. He worked long hours to get the job done quickly as well. Thank you Andrew! Totally recommend and will continue to use him and his company."

"All Seasons installed a new gas heater and new central air system and we are very pleased with the workmanship, the price, and our salesperson who was very knowledgeable. I highly recommend them. HomeAdvisor helped us find All Seasons Comfort Control located in nearby Warminster."

"The employees were all informative, answered all my questions and were able to install a new A/C unit the next day. They were on time for both the check and the install. They were respectful and completed the install earlier than expected. I would highly recommend Rohrerâ s!"

"Sales rep measured rooms and windows to perform a load cal'n. Proposed a quality Carrier system at a reasonable price. The installation took a little longer than expected due to use of an inexperienced helper, but eventually it appeared to be a quality installation. They met my requests for minor modifications/enhancements to allow easier maintenance. Workers wore masks at all times, used drop cloths along walking paths and shoe covers, so the job was kept clean. Took time to explain system, installation and maintenance points. Were honest about risk of condensate pipe freeze-up and potential remedies, and "orphaned" water heater. Overall, quite satisfied with the equipment and installation. Awaiting finalization of punch list paperwork items."

"Very professional installation. Was done in a timely fashion and the crew was very professional and clean. Huge difference in the comfort of our home now."

"Horizon did a great job on our shower faucet install."

"We have a yearly maintenance agreement with them after they installed our air conditioner. They're very efficient. They come when they say they're going to come and do their work. The last time they were here for AC, they did find a problem and fixed it at no charge."

Keystone Comfort HVAC was built to provide a better experience for homeowners in southeastern PA. After years of working within large, corporate-driven HVAC environments, our founders saw a growing need for a company that values honesty, quality work, and long-term relationships over quick transactions. We understand the common frustrations customers face, including unclear communication, rushed service, and short-term fixes that don't solve the real problem. We take the time to listen, explain what is happening, and provide clear recommendations tailored to your needs. Whether it is system repairs, new installations or maintenance, we focus on doing the job right the first time. We believe that when customers feel informed/confident in their decisions, the results are better. We also believe that strong teams create better outcomes. By supporting our employees and maintaining high standards in our work, we are able to deliver consistent service that customers rely on.

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!\n

In 1972, Donnelly’s Plumbing, Cooling, Heating & Electric began serving Pennsylvania residents with premier plumbing services and later expanded to add their superior HVAC and electrical services. As the area’s top choice for plumbing, heating, cooling, and electrical 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. \n \nDon’t delay. Contact us online today for all your HVAC, electrical and plumbing needs in Montgomery County.