Donnelly's Cooling, Heating & Plumbing

Home Comfort Specialists Since 1972

Serving Montgomery, Bucks, Chester, & Delaware Counties

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Trusted HVAC & Plumbing Services in the Greater Philadelphia Area

Five Decades of Local Service Excellence

Trust the home comfort specialists from Donnelly's Cooling, Heating & Plumbing when you have a broken AC, inefficient furnace, or leaky faucet. With over 50 years of experience, our family-owned and -operated company has the skills and tools to handle any home service you need. You can expect licensed and insured technicians to deliver prompt, reliable solutions that keep your home comfortable and functional year-round.
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.​

    We are proud to Offer Affordable Financing Options!

    Our Reviews

    See What Your Neighbors Are Saying

    Professional, friendly, interactive, and informative.
    Ashli Servis
    2 days ago
    Derrik was awesome. Knowledgeable, honest, competent. Professional, quality experience from the emergency call to handle my ruptured hot water tank through installation of a replacement and a water softening system. Everything you want to happen when dealing with a contractor.
    Rob Guenther
    2 days ago
    Matthew was great. He installed a new thermostat and got our heater up and running.
    Stephanie Sabol
    2 days ago
    Friendly, professional service from start to finish. Mary-Ann, their dispatcher, was very kind, and Tom, the service provider, clearly explained the process before starting the work. I would highly reccomend them for your next project!
    Phillip Kirman
    3 days ago
    Joseph did a great job for yearly furnace maintenance, went over results and suggested useful recommendations to increase life of the furnace units.
    In Choi
    3 days ago
      Read Our Reviews

      Donnelly’s Proven Process

      What to Expect, Start To Finish, When You Set up An Appointment With Donnelly’s
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        We Sell, Service and Install All Top Brands

        Proudly Serving

        The Greater Philadelphia area and the surrounding counties


        • Montgomery County
        • Bucks County
        • Chester County
        • Delaware County

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        Our Deals

        Save on Your Next Service

        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

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        Recognized for Excellence by Customers and Industry Professionals Alike