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

Nafeese Taylor did a great job today fantastic great service

irene harris

3 days ago

This was my annual summer heating system checkup. Nefeese was my technician. He was a very skilled young man. I appreciate how he explained things to me clearly! I truly like the service he provided and the Pat patience he had with my questions. Nafeese is the reason I like Donnelly!

Four Sons

3 days ago

I am on comfort plan and get regular check ups. AC checks for summer2026 was great. Amir was the technician performing the service. Service from Donnelly’s is always pleasant and great!

Beth Y

3 days ago

The Donnelly team came out on WED for an AC check. After 18 years the AC unit outside was leaking and the coils inside with my heater needed to be replaced. They showed me all of the test results and pictures of the damage. Luckily my heater was still in excellent condition. They sent a team out on THU morning and by the end of day had replaced my external 5 Ton AC unit and all of the ducting and exchanger coils inside. At the same time I asked them to repair my water softener and add a carbon filtration unit. They did it all in a single day and did a professional installation job and provided great service at what I thought was a reasonable price. Cudos to their team! I am one VERY SATISFIED Customer!

Harry MacCord

3 days ago

We were recommended to call Donnellys from friends. I expected an appointment to just get a quote and schedule later. Their employee showed up, understood the work I was asking for, provided me a quote and was able to replace my water heater and pressure valve in the same visit. The efficiency was appreciated as I had scheduled the day to work at home and didn’t need to stay home another day for the work to be completed.

Tricia Begnaud

3 days ago

Read Our Reviews