Get matched with top central humidifier installers and replacers in Sellersville, PA

"Outstanding service and professional installation!!"

"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."

"I ve never met so many people that were so professional and personable working for the same company. From the tech who initially diagnosed our system (Jeff) to the sales rep (Kevin) to the installer (Michael), they were all a pleasure to work with. Everyone was on time. They kept our home clean. They explained everything and answered all of our questions. All of them were extremely knowledgeable. And they stayed within our budget with no hidden costs. This was a complete install of an A/C and furnace to replace our 25 year old system. It was not a straight swap. They replaced old lines and even ran some new ones. They came out on Sunday and had a new one installed on Wednesday. I could not recommend them more."

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we had a leak problem and the tech came and looked over our equipment, fixed the problem and left. It cost us nothing and we have had their home heating service contracts for over 20 years.  They have NEVER ONCE not shown up or not helped and in the two furnace emergencies we had--they were here with in 1hr. 

We are very happy.

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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.

"We were doing some upgrades in our older house and I wanted to have central A/C and to remove the old baseboard heating system. I contacted a couple of the larger A/C contractors and they all came in around the same price while using different manufacturers and in some cases even different sized systems. I found an ad for Green Heating and called Dan who quickly scheduled a visit. I liked Dan from the start. He's down to earth and personable. His price was excellent, he was a couple thousand dollars cheaper than one of the other contractors while quoting almost the same equipment (one of the components that Dan used was a new version than the other guy quoted). When we were finally ready for the installation, Dan worked with me to schedule the installation and he did it in the time promised and in the time frame he quoted. I like the system and we were very comfortable in our home this summer, which was hot and this was the first summer that we've had whole house AC. In 9 months we have had 0 issues with the system. I whole heartedly recommend Dan and will use him when general system checks or any maintenance is needed."

"Installed a new humidifier and it, so far, it is working well. Job looks professional and all debris was removed."

"Everything went great. Fast installation."

"I left the vehicle at the service station and a courtesy ride was provided to my residence. Vehicle was ready at agreed upon time. The vehicle passed inspection, but I also appreciated the manager bringing to my attention that the tires would likely require replacement before the next annual inspection.


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"Tech came on time. Explained us the part he replaced. We are planning to call him for AC in summer."