Our Guarantees

These Are Our Promises to You

We Want You to Be Totally Thrilled with Our Work and Team

Guaranteed Satisfaction When Choosing Donnelly’s Cooling, Heating & Plumbing

We take customer satisfaction very seriously at Donnelly’s. Whether you call us for a small plumbing repair service, regularly scheduled heating and air conditioning maintenance and repair, or a heating and cooling system installation, we want to be sure you are completely satisfied with the products and service we provide.  That is why we provide you with:

The Donnelly’s Guarantee

Donnelly’s hires carefully and trains continuously on both technical and customer service skills. Our goal is for you to be totally thrilled with our people and their work. We want to earn the right for you to recommend us to your friends and relatives. If we fall short, please let us know so that we can discuss how to make it right.

Comprehensive Satisfaction Guarantee

Our guarantee is that if at any time you are not 100% satisfied with the performance of the equipment or components we install, our service, the energy savings promised, the value delivered, the level of convenience offered or even our people, we will immediately do whatever is necessary to achieve your satisfaction. We will make whatever modifications necessary to achieve your overall happiness. There is no risk — you can’t lose!

Customer Service Guarantee

When you call us, we answer our phones! No voice messages, endless menu options, or forgotten callbacks. Someone is always available to help you, right when you call!

Up-Front Pricing Guarantee

We explain all costs and you approve the price before work begins. No hidden costs and no additional charges will ever catch you by surprise.

Clean Home Guarantee

Our Clean Home Guarantee ensures that we will leave your home as clean or cleaner than we found it! With your satisfaction guaranteed, you can call Donnelly’s with confidence for any plumbing repair service, heating and air conditioning maintenance and repair, or HVAC installation you may need!

Professional Accountability

Donnelly’s is proud to be a member in good standing of the National Association of Plumbing, Heating and Cooling Contractors; The Nexstar Network; and the Better Business Bureau.

Call Donnelly’s Cooling, Heating & Plumbing at (215) 855-2014 or contact us online when you need fast, reliable service in your home.

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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
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    we offer financing

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    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

      Caleb is a delight. He called ahead and arrived in good time. He checked both toilets and fixed the one that was flushing itself. He explained everything he did. He was polite and respectful. Caleb is welcome here any time.
      Sarah Krause
      2 days ago
      Efficient and clean operation
      Frank OConnor
      2 days ago
      Tech was on time, professional and did quality work.
      David
      2 days ago
      Amazingly fast service! We had an emergency pipe leak and they came out same day and fixed it. Walked me through the issue so I could make an informed decision.
      Tiffany Braxton
      2 days ago
      We called Donnelly for numerous small plumbing issues… Drains that wouldn’t hold water, a broken sprayer on a faucet, etc. Nick came and did an amazing job… Fixing the drains and identifying that the broken faucet was really a water pressure problem that should be remedied for the safety of all of the house plumbing. Nick was polite, efficient, and knowledgeable. He was very patient explaining the problems and the resolutions and educating us on how various shuttle valves worked. It was an excellent service experience! Update 3/25/2025 We continue to use Donnelly and especially Nick for our plumbing issues. He was here again today fixing a valve on a sprayer and replacing an expansion tank on our water heater. He could not be nicer and more efficient ... always taking the time to clearly explain what he is doing in language we can understand. Totally recommend Donnelly, especially Nick.
      Joan Engel
      2 days ago
        Read Our Reviews