Donnelly's Plumbing Heating and Cooling
5th year as a Best Pick
certified company
A
rated
Based on 268 reviews
Our Certification Process
Best Pick Guarantee
Verified License(s)
Verified General Liability Ins.
Verified Workers' Comp
5th year as a Best Pick Call
"If your heat goes out in the dead of winter or your air goes out on the hottest day of summer, you can't wait forever for relief. Your family's comfort is our top priority, so we commit to providing service within hours, not days. Get professional service from people who care with Donnelly's, where we believe your home is your refuge."

Marty Donnelly | President
Company Information
Services Offered
Donnelly's maintains, installs, and repairs all brands of gas furnaces and gas boilers, central air conditioning units, heat pumps, humidifiers, and whole-house filtration systems. The company also provides free estimates for HVAC replacements.
Warranty
Donnelly's offers a 100 percent satisfaction guarantee.
Company History
The company is a second-generation, veteran-owned business with over 45 years of experience.
Distinctions
Donnelly's is a member of the Plumbing-Heating-Cooling Contractors Association, the Air Conditioning Contractors Association, and the Nexstar Network.
Employee Information
Donnelly's employees must pass background checks and drug testing. Field staff wear uniforms with name badges and drive vehicles clearly marked with the Donnelly's logo.
Licenses
PA001004
Areas Served
Montgomery County, The Main Line, Bucks County
A selection of 268 homeowner reviews:
“I thought Donnelly's was wonderful. They replaced an air conditioner in my house. It was a very positive experience. Their guys were in and out in one day, and they took extra precaution to make sure they didn't drag dirt all over the house. They kept my house very clean, which I really appreciated. They were excellent. I'd give them an A. Those guys were great.”
“We used Donnelly's to service the HVAC unit. They showed up on time, and they were really informative. They told us what caused the problem and how to prevent it from happening. It was excellent.”
“I've been quite happy with them. They replaced the HVAC system and the water heater, and they do general maintenance. They show up when they're supposed to, and they do a good job. I'd give them an A+.”
“It was excellent with no complaints. They did HVAC work.”
“Our air conditioning had a problem. They were professional and clean. They explained what they had to do and why. It's sort of a work in progress. We need to revisit it in a few months. I'd give them an A overall. Their customer service was very good.”
“They installed a heater and an air conditioner. I'd give them an A for the total experience. I've used them before so I would recommend them since this is not the first time they've worked for me.”
“It was an OK experience.”
“I had no complaints and I'd recommend them.”
“I don't have a bad memory of them.”
“I'd rate Donnelly's as an A. My heater still works, so I guess I'm all right. Everything was good. We had a problem, and we had no heat. I chose them because I'd used them before; this was my third time. They fixed it, and everything went fine.”
“Everything went very, very well. Donnelly's Plumbing, Heating, & Cooling came as soon as possible, found out what was wrong with my air conditioning, and then took care of it. It had something to do with the motor. Everything was fine—I'd grade the work as an A.”
“It went really well. Donnelly's is prompt in showing up, and they're very professional. They do the work right the first time, every time. I don't have any complaints about them. We've used them quite a bit—we're loyal to them. Last time, we were having a new gas stove put in, so they ran the gas line for us. We think they're an A+ company.”
“The first time we called them, our heater went in the middle of the winter. They showed up and fixed it in less than an hour. It was good. I'd give them an A+.”
“Donnelly's put my HVAC system in. They do my air conditioning, and they've fixed my heating system. They're pretty prompt, and I like their service. I've been using them for the last three or five years. They deserve an A+ grade.”
“Donnelly's was quick, and the guy really knew what he was doing. It was a brand-new house, so the A/C wasn't working at all. He diagnosed it, and in ten minutes, he got everything fixed and left. We chose them because they were who our builders recommended. They do A+ work.”
“I had a no-heat situation. I called Donnelly's toward the end of the day, and they had somebody there that evening. The problem reoccurred the following day because we had a snowstorm, but the guy who had come out and worked on the problem the night before spent about a half hour to 45 minutes on the phone with me. He walked me through solving the problem because there was no way he was going to be able to get here—we'd had about 10 inches of snow, and he was about 45 minutes away. The first thing I liked was him coming out and addressing the problem, and then when it didn't work entirely right, he spent time with me on the phone the next day so I could fix it. I chose them because when I looked for emergency service from HVAC companies in my area, the other place I called didn't get back to me. When you call Donnelly's off hours, you get an answering service, and they try to reach the technician. I explained the problem to the answering service and got a call from the technician within 15 to 20 minutes. He told me he'd be right down to take care of the problem. The quick turnaround—from the phone call, the quick service, and everything—makes them an A+ company.”
“It doesn't take long to get them to come out—that's one of the really good things about them. I've been using them for two years for air conditioning maintenance, and I would give them an A+ rating.”
“Donnelly's was good. We had them do service for the heating system, and it was OK. There were no problems, and it's working well.”
“They serviced my heater when it stopped working. They were good. What made them a good company to work with was that they came right out when I called them—only an hour and a half after I reached out. The issue was the igniting coil; the burners needed to be replaced. They did a grade-A repair.”
“They're very good. I chose them because they had a past record with me when I had problems in the heat wave, and they were very good in coming out right away and following through until the problem was solved. I can't say enough good things about Donnelly.”
“They put a gas boiler in for me, and it went well. They came out on a Sunday, and they were just good guys.”
“They did ventilator work. They replaced a board in the central air unit that wasn't blowing out any air. I guess it was a fan. I liked that they were on time. I've been using them for about five years, and I think they're an A-level company.”
“I had an awesome experience with Donnelly's. My thermostat wasn't working, and my heat wasn't coming on. They came out within an hour, and they were done within half an hour. When the guy came out to my house, he kept me informed, and I really liked that. They're an A+.”
“Donnelly's did fine. They were courteous, and I liked their promptness. Everything about them was awesome. They came out and checked our heater, since we'd just moved in. I'll give them an A+.”
“Donnelly's was responsive and efficient. I've been working with them for maybe ten years. They've earned their A+ from us.”
“Their courtesy, knowledge, follow-up, and quality work is what made my experience with Donnelly's positive. They did heater repair, among other things. I was satisfied. I'd give them an A.”

Donnelly's did some work for us in the past. We just started with them, so they've been here twice, once as an emergency call. They are extremely professional, very knowledgeable. We absolutely think they're the best. I was in a situation where my husband was out of town and I'd been ill, and I had an air conditioning problem. I called them and they came, and they were just amazing. I can't say enough about the company. We've signed on for their service contracts for our heating and our air conditioning. They've been out to check out both units for us. As I say, their representatives are very professional, very well spoken, and respectful. Their trucks are beautifully maintained. It's just what you'd want from a company like that. We have not needed them for plumbing; they've just done our air conditioning and heating. We—knock on wood—have not needed them for plumbing at this point. We just have no hesitation about calling them. They're maintaining what we have right now, at the moment. We get a couple checkups a year. It's such a pleasure to be able to speak so highly, in today's world, of a company.

For heating and air conditioning, Donnelly's is who I have. They've done so much work here I can't remember everything they've done. I've had new air conditioner put in, a replacement of our air conditioner and heaters. They've done a lot of work for me over the past several years, and I've never had problems with them, either. They are a reliable service when they come out. I had problems with the heater, which was replaced for the third time, and when Donnelly's replaced it, I haven't had problems since—that's the difference. I give them an A all the way around. They come out and they do everything they say they're going to do. I've never had problems with them coming back after they've done stuff.

Donnelly's was out in mid-February. We had them out a couple times. They're excellent service. We had them for our air conditioning and heating. They're exceptional. They come in and they're very thorough, very polite, and very careful of my carpeting and all, which I appreciate. I had no problems with them. As far as I'm concerned, whenever I have a problem like that, I'll call them. I would give them an A.

We use Donnelly's for everything that's related to plumbing and heating. In the last four years they've put in a new hot water heater, they put in a water softener, and they put in a new battery backup sump pump. They also maintain our air conditioning and heating system. They have one technician that we ask for all the time whose name is Michael, who is spectacular. The interesting thing is—a quick story—last year during the hurricane, all of our neighbors had from three to ten inches of water in their basements. Michael had convinced us to consider upgrading the battery backup sump pump system that we had, because the one that we had previously—when we moved into the house—was one that was bought and self-installed. He put in the upgrade, and it saved us. Ours was the only dry basement in the neighborhood. We rely on them and trust them implicitly.

They're very good; they're very prompt and professional. Their services are excellent, and they're very mindful of keeping the house clean when they come in and leaving everything the way they found it, so I appreciate that. We have a water filtration system, and they service that every year and clean the tanks and put in new filters. And we had them in recently—we have one of those fluorescent bulbs in our heating system, and that burned out as well as the lamp ballast. They replaced that for us. Our air conditioner fan went, the outside unit fan went, so we had to have that replaced, and they also put this chemical on our outside unit to help extend the life of our outside unit, so that helped.

They did an outstanding job.

They maintain our plumbing and our heating system. I've been using them next to forever. They're a local company, and they're really reliable. The guys know what they're doing. I give them an A.

They checked the air conditioner. It was very good; the guy was very neat and clean, very thorough. I would give them an A.

About this time last year my air conditioner was pretty much kaput, and Donnelly suggested we replace that and a heater because it was cheaper to do both at the same, and the heater was probably going to go, too. They put them both in and they did an excellent job. They come back and check it, and I think they've done some plumbing for us. I'm very happy with them. We have, like, a gold star service contract with them, so I pay that and then they just come out and do whatever. I believe that does put me first on the list. They're always very prompt, and they see you the next day if they can. I've had the same technician, I can't remember his name, but he's excellent—that makes a difference. He put it in, so he came this year and checked it out. We're very happy. But mostly, they've done air conditioning; we needed the air conditioner, they came, they put it in in one day, and put a heater in. I will continue to use this company. I just renewed my gold star contract. I would refer them to others.

I called them for my air conditioning. I called, and they came within a couple of hours—really good. There was one technician, but I don't remember what his name was; he was good, pleasant and looked like he knew what he was doing. Everything was done. It works nice. I would recommend Donnelly's Plumbing to others.

We had a problem with a device that was supposed to be conserving the gas for heating the house. It would shut off when it shouldn't. They took care of that and then put in a new thermostat for us. All of that work is holding up so far. We were very pleased with what they've done, and their customer service is excellent. The whole communication process with them is effective; they listen. I would be comfortable with giving them an A—I would actually give them an A+.

They helped us with air conditioning. They fixed the problem. It was good, quality work—everything is holding up well. The technician that came to the house was a nice guy, and he was fairly knowledgeable. He got everything done quickly. The air conditioner itself is holding up quite well. I would call on them again.

I called on them to help me fix so many things. They fixed our air conditioner, and we got a new hot water heater from them. They're very fast, efficient, and clean. I found the technicians to be quite knowledgeable about the service. Everything is holding up well. I will contact them again—probably in a couple weeks.

Donnelly's came out and did some repairs on my heater. That was the second time that I had used them. They came out a year before. I've had them out a couple times. Both times were for the heating. The technicians that came out and the work that they did were both good, and they were respectful, timely. They did a good job—no complaints. I would refer this company to other people. I haven't had them do any plumbing.

Donnelly's Plumbing came out to do work. They were outstanding.

I'm very satisfied with them; they're a very good company. They've done just heating and air. In the last four years they put a system in. When they come out, they are polite and respectful to me and my property.

Donnelly's came out to do some work for us. They replaced our HVAC system, and they've done some general plumbing work. The HVAC replacement was our first time using them. The plumbing work—I've used them multiple times. The quality of the work is excellent. I've never noticed any problem with their cleanup. I would give them an A.

They did work for us in the past. We only dealt with them on one occasion right now. The heater stopped working during the winter, and we called them up. They came out very quickly and actually had the heat back on in a real quick time. They weren't here that long, and they took care of everything, and the guy that came out was very nice and friendly. He was very respectful of both me and my property. I would use this company in the future. They sent us a thing, a discount card, for the heating and air conditioning. We were very pleased with all they did. I would give them an A.

They came in and repaired a heating unit for me. That repair is holding up so far. The technicians were really great, very neat looking—it was a young guy. They came in and checked and found the problem right away, and then they fixed it and checked the unit for any other problems. The customer service was great. It was good, very, very good. They cleaned up after themselves, so I would call on them again. I'm going to call them to check my air conditioning system. I would grade them an A.

They did a great job.

I'm very happy with their service. They did a new heating system and a new air conditioning system. Sometimes I have a contract with them, sometimes I don't. I've had to call them in an emergency, and they were prompt to get out here for me. They are respectful of my property and they're respectful toward me. I had them come one time for plumbing; I think I had some clogged toilets. Their cleanup was very good.

I called on Donnelly's to help me with a few things—a new heating unit for our house and an air conditioning unit for an addition. What I remember most about working with Donnelly's Plumbing was, I think, their quick response. The workers are always very pleasant and knowledgeable and respectful, and they clean up after themselves—they're great. The heating and air conditioning units themselves are holding up well. I definitely would call on Donnelly's again.

Donnelly's was out July of last year. I don't remember why they were here last July—I've used them a few times—but they're always excellent technicians, very professional and informative about what you have to have done in the household. They're concerned about how clean they're going to be, in and out, and they're very prompt in terms of the time that they tell you they're coming.

They did great.