Donnelly's Plumbing, Cooling, Heating & Electric

Home Comfort Specialists Since 1972

Serving Montgomery, Bucks, Chester, & Delaware Counties

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Cooling

Heating

Plumbing

Drain & Sewer

Electrical

Trusted HVAC & Plumbing Services in the Greater Philadelphia Area

Five Decades of Local Service Excellence

Trust the home comfort specialists from Donnelly's Plumbing, Cooling, Heating & Electric 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.

Air Conditioning Services

Stay cool and comfortable all summer with expert cooling solutions from Donnelly's Cooling, Heating & Plumbing . We'll repair your central air conditioner, heat pump, or ductless mini-split system if it’s not working properly. Your technician will walk you through your options if you want to install a new cooling system. We even offer free estimates on replacement AC units.

Heating Services

We understand how essential it is to have working heat during Pennsylvania winters. If your furnace, boiler, or heat pump struggles to keep you warm, turn to us for fast repairs. When your system needs replacing, we'll handle that, too. Our trained and experienced technicians are always available to provide quick and reliable service with honest, upfront pricing.

Plumbing Services

Clogged drains, burst pipes, running toilets, and other plumbing problems can bring your daily routine to a complete halt. Thankfully, our expertly trained plumbers are ready to help with any plumbing need you may have! We offer repair, replacement, installation, maintenance, and drain cleaning services to keep your home’s plumbing running smoothly.

Drain & Sewer Services in Lansdale

Donnelly's Cooling, Heating & Plumbing provides comprehensive drain and sewer services to keep your plumbing system running smoothly. Located in Lansdale, PA, our expert team is equipped to handle all your needs, from drain cleaning to hydro jetting.

We also handle both trench and trenchless sewer line repair and replacement, ensuring minimal disruption to your property. Our video camera inspections allow us to accurately diagnose issues and provide targeted solutions. Whether you need sewer line repairs due to tree root intrusion or sewer line installation for your property, you can trust us to deliver efficient and reliable service.

Call (215) 488-5170 now to schedule HVAC or plumbing services in Montgomery County, the Greater Philadelphia area, or surrounding areas.

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

We are proud to Offer Affordable Financing Options!

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Our Reviews

See What Your Neighbors Are Saying

I wanted to edit and update my review for Donnelly's. I have been using them approaching 5 years now and I am extremely happy and satisfied with their service to my homes HVAC and plumbing needs. All the HVAC Technicians and Plumbers have been very nice and professional in their visits and service to my home. They always explain clearly what they are doing and what services are recommended when doing their inspections or repairs. They are always respectful and neat when working in or outside my home. I am also excited about their new Electrical Division and will certainly use them for this service as well for my home. I also want to give recognition to all the support staff (Representatives who answer the calls and the dispatchers) I am very appreciative of your work and professionalism. Thank you Donnelly's for helping in keeping my homes HVAC, Plumbing and Electrical systems working and running great!!! Today 3/18/26 I had Donnelly's come out for a Fill valve issue with my toilet tank. Plumbing Technician Nick Lenzi arrived at my home very friendly and professional. During the repair Nick noticed another issue which could have turned into a more serious concern and explained in detail what his recommendation was to fix the issue. Nick worked meticulously and with an obvious skilled knowledge of plumbing repair. Nick was neat and respectful of my home and I am very grateful for his great service he provided me. I have been a customer of Donnelly's for a while now and would highly recommend them for any of the professional services they provide. My plumbing technician Jeremy was very pleasant and professional today 7/31/26 with the service he provided on my hot water heater. Donnelly's has always given me great service since I have been using them for my home HVAC & Plumbing needs.

George S.

3 days ago

The repair of the non-functioned HVAC systems was done professionally and very promptly. The technician took time to thoroughly explain the problems and what it would take to fix them. The work was completed in half the time estimated.

Christopher da Costa

4 days ago

We’ve been longtime members of Donnelleys service plan. Every technician we have had has been prompt, professional and knowledgeable. Most recently we had Nafeese and his positive energy and can-do attitude were much appreciated! He never made us feel rushed and was incredibly patient about explaining thermodynamics to a non-engineer! I would absolutely recommend asking for him!

K Carson

4 days ago

Our hot water heater died and within two hours, Derek from Donnelly’s was there to help see where the leak was and gave us multiple options to choose a new one. Unfortunately, it had to be replaced. Derek did a great job explaining everything, he was kind, courteous and left my house in a wonderful condition. I would highly recommend him to anyone!

Ariel Belli

4 days ago

Nick has done a wonderful job for us today. He is very knowledgeable and did a thorough inspection, recommended a cleaning and explained why, and he is completing that now. Thank you for sending him here! Karen Snyder

Karen Snyder

4 days ago

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