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.

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Free

Full Electrical System Evaluation

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$79 Off

Any Electrical Service

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$500 OFF

Furnace Install

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$79

Furnace System Evaluation

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers
    See All Offers

    Our Services

    Cooling

    Heating

    Plumbing

    Drain & Sewer

    Electrical

      Cooling

      Heating

      Plumbing

      Drain & Sewer

      Electrical

      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.​
        About Us
        Our Reviews

        See What Your Neighbors Are Saying

        Derek did a great job and was very professional and courteous. Only concern is Donnelly’s pricing schedule.
        Chris Ebersole
        2 days ago
        Dylan was prompt, knowledgeable, efficient, and courteous. A great representative of Donnelly.
        Jim Shea
        2 days ago
        I was very pleased with Nick’s work. But, also with his explaining every detail of what he was going to do as well as some other important plumbing tips.
        Barbara magarity
        3 days ago
        Oct 2025 - Tony Reyes came out to do a hearing system inspection. He was professional and polite. He advised on 2 improvements which I put under consideration for later. I am gun shy now. Oct 2025 - they returned to correct the original plumbing issue and it was a quick solve which made me question my prior spend of $2k. Sept 2025 - I had a plumbing issue with a toilet and they came out and I ended up paying for $2k of repairs resulting from my subpar builder but was told it caused the issue I was having. All of the repairs however did not resolve my original issue. 😐 July 2025 - Justin Henry came out to perform an AC inspection. He was on-time, courteous, and thorough. I now know about possible upgrades I can add to my systems but also that my AC is good condition. Holding at 4 stars. March 2025: Joseph Garber came out for a plumbing inspection which is a covered service for the $20/monthly fee I pay. He was professional, personable, punctual and just nice. All of their service reps should have some of the “P”s listed above. Adjusted my review rating from 2 stars to 4 stars. Jan 2025: Horrible experience with the last service visit by Kevin McCullogh. He arrived without a service appointment while I was at work but my son was at home. My son let him in to do the work when he couldn’t reach me at work. The service was done well but it was an hot mess with the payment. I had to call the main office from work to make arrangements. All of this made my son late for his college class because none of it was planned. Not the experience I am used to. Disappointed and I am doubting using them for another service I was considering.
        Marnie A.
        3 days ago
        The team of 3 that was here to replace my sewer line were extremely confident in what they were doing. They kept we well informed and worked very well as a professional team. They were polite and workmanship was wonderful. All was cleaned up before they left. I would definitely use this crew again no doubt. Give them 5 stars for sure.
        Ed Hvorecny
        4 days ago
          Read Our Reviews