Our Service Area

Donnelly’s Cooling, Heating & Plumbing Has Served the Greater Philadelphia area since 1972

Donnelly’s Cooling, Heating & Plumbing has proudly served the Greater Philadelphia area since 1972. We provide top-notch air conditioning, heating, and plumbing services to keep your Pennsylvania home comfortable all year. Whether you need routine maintenance, a fast and easy fix, or an entire system upgrade, our licensed and insured professionals can help.

We know unexpected repairs and upgrades can be a financial strain. That’s why we offer flexible financing options to fit your budget. With Donnelly’s Cooling, Heating & Plumbing, you can invest in home comfort without worrying about the cost. Low interest rates and affordable monthly payments let you prioritize comfort and efficiency without breaking the bank.

Customer satisfaction is our top priority, something you’ll notice upon your first interaction with us. Our clients appreciate our same-day emergency services, free estimates, and transparent, upfront pricing. Don’t just take our word for it — check out our glowing reviews to see why homeowners trust us for their cooling, heating, and plumbing needs.

Check out our service areas below and contact us online to schedule an appointment.

Why Choose Us?

When you choose Donnelly’s Cooling, Heating & Plumbing as your home comfort specialists, you experience what it’s like to work with a true professional. We show up on time, listen to your needs, and clean up after ourselves.

With the ability to work on any brand of HVAC and plumbing equipment, you know you can rely on us. We communicate clearly and provide estimates and warranty information in writing. Our technicians are trained, experienced, and background-checked for your peace of mind.

Request an estimate for reliable and affordable HVAC and plumbing services in the Greater Philadelphia area. Let us show you why we’re the trusted choice for home comfort needs.

What To Expect

Discover the Donnelly’s Difference

Professional Services

We show up on time, keep things clean, and listen to what you need. We treat you and your home with the respect it deserves.

Service for All Brands

We can work on all makes and models of HVAC and plumbing equipment.

Trustworthy

​You can count on us to be honest and always do what we say. We communicate clearly, provide our guarantees & warranties in writing, and ensure you understand everything we're doing in your home.​

Experienced Technicians​​

We excel at solving problems with years of experience behind us. We look at today's challenges and future needs to create the best customized solutions.​

Licensed & Insured

​Our technicians are licensed, insured, and background-checked for your peace of mind.​

Professional Services

We show up on time, keep things clean, and listen to what you need. We treat you and your home with the respect it deserves.

Service for All Brands

We can work on all makes and models of HVAC and plumbing equipment.

Trustworthy

​You can count on us to be honest and always do what we say. We communicate clearly, provide our guarantees & warranties in writing, and ensure you understand everything we're doing in your home.​

Experienced Technicians​​

We excel at solving problems with years of experience behind us. We look at today's challenges and future needs to create the best customized solutions.​

Licensed & Insured

​Our technicians are licensed, insured, and background-checked for your peace of mind.​
    Our Reviews

    See What Your Neighbors Are Saying

    James was punctual, let us know he was coming, and did a great job completely addressing the problem we were having.
    Renee Byrne
    1 day ago
    James kept me informed about the progress of my plumbing repair
    Charles Henry
    1 day ago
    Communication at every level was outstanding. Oscar was right on time, very polite, answered my questions & did an outstanding job. Great Experience. Wish all service companies were this good. Rich Goldsmith
    Rich Goldsmith
    2 days ago
    They were on time to replace my furnace, polite and professional, answered all of my questions and cleaned up after themselves and put everything back in my utility room the way they had found it, for the most part. The overall cost is a bit high, but as it comes with a 10 year parts and labor warranty I guess that's ok, but I have to pay $20 a month in addition to maintain this. So...as I've said, a bit costly. I feel as if maybe I jumped the gun in replacing it, as there really wasn't anything wrong with old furnace except that it was old. But hopefully this will last me until I leave this earth. Evan & King did a great job today installing my new HVAC system. They were polite, courteous, and helpful to me in extra ways. When my furnace was installed and the new thermostat was put in, it didn't cover the old one completely leaving a spot that was obvious. I picked up a small can of paint and King took care of that for me today. It looks much better. It may need another coat after it's completely dry, but that can be done anytime. The cost reasonable , and they gave me a discount for paying in cash and Joe, the manager said now that I have both systems I no longer need to pay the $20 per month, & will now have, starting today, a 10 year free parts & labor warranty. The guys cleaned up after themselves just like last time. And Evan even helped me out with something personal. I have a paralyzed left arm, and I just received a coconut shell birdhouse in the mail that needed a hole drilled in the bottom. I saw he had a drill out, so I asked, and he was nice enough to do that for me. Overall am very happy with Donnelly's. Everything looks really good, and the job took just about as long as they said it would. 28 April 2025 Ok, just a quick update, as I've said, both King and Evan were very nice, polite, and professional on the day of the installation of my new HVAC system. I turned it on for the 1st time today, I'm amazed at how QUIET the compressor that's outside is!! My old one was so loud. Then again it was 27 years old!😂 The only thing I'm waiting on now is something, anything, in writing. I was told by Joseph Albert that since Donnelly's had put in my furnace last year, and were now putting in the HVAC system, I would no longer have to pay the $20 per month maintenance fee, and that I now have a 10 year parts and labor warranty. Nice to HEAR, but I'd really, really like to see something in writing that confirms all of this. I wasn't even given a receipt after I paid the 1st $1,000.00 deposit in cash, or the remainder of $5,900.00, again, in cash. I'm used to getting a receipt once I pay for something. I got a yellow slip of paper just saying all the work had been done. So THAT is my only issue. I want written confirmation of what was discussed & a receipt that I paid.
    Michele B.
    2 days ago
    Donnelly responded within 2 hours of me calling in the late morning hours. They quickly repaired my leak installed a new shutoff valve so that I won’t experience a leak again. Thanks to Daniel who did the quick repair.
    richgreco
    2 days ago
      Read Our Reviews