Trusted HVAC & Plumbing Services in the Greater Philadelphia Area

Nafeese was excellent in reviewing my heater. Took pictures and videos of potential issues. Extremely professional in every way. Explained everything in a logical and easy way to understand. Have used Donnelly for a number of years. Would highly recommend Nafeese and Donnelly.

Luke did an excellent job installing my faucet. He was friendly and professional, and answered any questions that I had I will definitely be using Donnelly in the future!

October 21, 2026

Matt Feiller came out to do our annual heating check and my wife and I were exceptionally pleased with him and the work he performed for us. Matt was very personable and very knowledgeable, and answered our questions to our complete satisfaction. He represents the company extremely well. We continue to be very pleased with the services provided by Donnelly and we will continue to be loyal customers.

November 17, 2025

We had Tom Gardner install a frost-free hose faucet in our garage. We have asked for Tom for several years to do any plumbing repair and for our annual plumbing checkup. We were very pleased with the work he performed for us today. He did a great job for us.

October 30, 2025

Joe Fletcher performed our annual heating system check and my wife and I were very pleased and impressed with this young man. He was very personable and thorough and we continue to be very happy Donnelly customers. This is a first-rate company.

August 19, 2025

We requested Tom Gardner to help us solve a loss of water pressure issue that had the potential to become a serious. When he arrived he quickly and expertly diagnosed the problem and offered an affordable solution that eliminated the problem. We have found Donnelly’s to be a company you can trust and we continue to be very happy customers.

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June, 24. 2025

We had Domingo Clendaniel do our annual AC checkup and as he has done in the past, provided us with excellent service.

We are very pleased with the service provided to us by Donnelly’s. Domingo is a credit to the company, providing us with 5-star service that we completely trust.

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June 11, 2025

We had Tom Gardner do our annual plumbing inspection. I feel sure that Donnelly’s has great plumbers and HVAC technicians, but we alway ask for Tom for any plumbing inspection or need. He is exceptionally skilled, honest, kind and very thorough. I always feel confident in any plumbing suggestion he might make for our home because my wife and I trust him completely.

Donnelly’s continues to provide us with five-star service for our plumbing and HVAC needs. We continue to be very pleased with the service provided to us.

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January 18, 2025

My wife and I noticed the air coming out of our heating ducts was cool so we called the office Saturday morning. With a cold snap approaching we wanted to be sure our equipment was working.

Natajia (I think I got the spelling of her name right) took the call and although only two technicians were on duty on Saturday, managed to get us on the list for that afternoon. She was really great.

Justin Cooper came out, quickly diagnosed the issue (it was not a major one) and took care of the problem in about 15 minutes. We were very thankful and appreciative. Justin was very knowledgable, explaining in detail to my wife and me the problem and how he fixed it for us.

The heat was back on with no further issues.

We have had a service contract with Donnelly's for many years and we have recommended Donnelly's to our friends and colleagues without reservation.

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July 8, 2024:

Tom Gardner performed our annual plumbing check up and once again, we could not be more pleased with the service he provided. Professional, courteous, knowledgeable, and so trustworthy.

My wife and I continue to be impressed with the service Donnelly's provides us for our HVAC and plumbing needs. We completely trust that any work recommended to be done as preventative maintenance actually needs to be performed.

The quality of the services provided continues to be top notch, and we would recommend Donnelly's to our friends and colleagues without reservation.

Last week we called Donnelly Plumbing to check and replace a wax seal on our upstairs toilet. Ardacan arrived and was very friendly and knowledgeable. Upon investigation, he discovered that a 65 year old cast iron sewage pipe was spalding and ready to crack and thus explode all over our finished basement!! Ardacan returned the next day with Nick, a new pipe and equipment and took care in opening up the wall and replacing the large pipe. Thank you! Your expertise averted a very messy and smelly catastrophe in our finished basement!!

Amir was great. He was very professional. He checked out the unit and then advised what needs to be done and the cost. The area was cleaned up after everything was completed . Thank you Amir.