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

        09-JUL-2025 Oscar Sosa Salinas, our service tech, was dispatched for our shifting toilet that leaked water onto our bathroom floor as well as down into our basement. Bottom line, we decided to to have the entire toilet removed and a new one installed. Oscar gave us options to go buy one ourselves (1 yr store warranty) and he'd install it - or, he'd buy one through their supplier with a 3 or warranty and he'd install it. For us, that 2nd choice was well worth the expenditure. Oscar was very professional in his approach to our needs. Thanks so much, Oscar! ‐-------------------------------- 31-MAR-2025 Dan Kelly, our service tech, was very professional. He listened to our explanation as to why we called for service. He was very thorough with the repairs. Very happy with the service. Thanks so very much.
        Audrey Rissmiller
        2 days ago
        John was very nice and checked the AC unit out and found the issue, a blown fuse.
        sharon welsh
        2 days ago
        It was good 👍🏽 work. Kevin care of our needs for the house 🏡 for air conditioning. Kevin the best 👍🏾
        Derrick Dutton
        2 days ago
        Excellent customer service. Our technician was extremely knowledgeable and professional. He answered all our questions and fully explained the scope of all work to be performed.
        Joe Calabro
        2 days ago
        Nick was a great plumber. He explained our options and completed service in a timely manner.
        D E
        2 days ago
          Read Our Reviews