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

Second Opinion on Sewer Line Replacement

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

$500 Off

Full Sewer Install Replacement

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

$100 Off

Complete Water Filtration System

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

Free

Water Pressure Test

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

      Cooling

      Heating

      Plumbing

      Drain & Sewer

      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

        Very professional. Experienced technicians.
        Sally Jones
        3 days ago
        Nick was kind and knowledgeable and we went through the house with him making suggestions about upkeep. Very professional, very nice.
        Deborah Degeorge
        3 days ago
        Donnelly’s responded to us right away even though it was past normal business hours. Caleb handled the situation very professionally
        Suzanne Philbin
        3 days ago
        Tom was deployed quickly to manage a burst pipe. He quickly assessed the issue, showed evidence and made an appropriate recommendation. He also improved the positioning of the replacement to avoid future issues. Very pleased with the service.
        Kyle Given
        3 days ago
        Brandon did an amazing job and was so quick, responsive, and professional. He informed us that we had biological growth in our upstairs HVAC system (it sure looked like mold to me) and he discovered that my moms in law suite did not have a filter on the split system that was installed during our garage to in law suite conversion. He gave us options and I discussed pricing with my husband. Brandon came back to our home the same day and he installed 2 UV light systems on both our upstairs and downstairs unit and he put a filter on my mothers split system. We were so impressed by his knowledge, honesty, and quality of work. Great experience!
        Adrienna Wilbourne
        3 days ago
          Read Our Reviews