My wife and I cannot speak more highly of our experience with Donnelly Heating and Air Conditioning. Being first time home buyers and this being our first major home purchase it was very helpful to sit down with Tom during our initial consultation. He was able to fully walk us through what to expect and work within our budget. Lou and Dave performed the work at our home and I cannot speak enough to how thorough and professional they both were. Showed up on time, explained things step by step, came up with solutions that enabled the job to get done, cleaned up daily, and were done the work faster than anticipated. Donnelly Heating and AC will definitely be the company that we recommend to all of our friends and family!

Love the A/C-my breathing is better. I'll live longer! You are all special and kind people an I thank you. When you are old the uniting is poor. In your work, think of all the people you help. Jesus smiles! May He always hold you in the palm of his hand. I will recommend you to all of my "young" friends. Love B.B.

I spoke with 5 different companies about getting a new oil boiler and no one would call back. Donnelly Heating and A/C called me back within a half hour of my initial call, gave me upfront pricing that was 35% cheaper than the other companies and completed the new install in one day. Tom Donnelly's techs are pros at what they do! They showed up on time , were polite and the finished product was well above my expectations. It's refreshing to work with a company that actually cares about you and that's what you can EXPECT from this company.

We are so pleased with the installation of our Central A/C System so expertly installed. The technicians did a masterful job. I very much appreciated his communication and consultation along the way. Also, his craftsmanship, wisdom and caring are qualities to be highly valued. I can recommend Donnelly HVAC with full confidence knowing that anyone who calls on you will be pleased.

We are extremely happy with our new heat pump system. It was very helpful that they were helpful and prompt in contacting us regarding our needs and also providing us with excellent literature for us to review. The Installer was a true master of his trade! We felt very comfortable that he would do the job right. They didn't leave after the installation until all the questions were answered.

My husband I were very pleased with how they worked with us to install our HVAC system. We really appreciated how they helped us work through the communication gaps and their commitment to stay in touch with us throughout the process. Their commitment to please us as their customer was definitely recognized. Additionally the technicians were patient and did an excellent job. We will certainly recommend you to others.

Installation guys were fantastic, they worked really hard to get us air the first day and it was much appreciated. They were very personable, friendly and all around nice guys. I was a pleasure to have them in our home.

Thanks for all your help in solving our hvac needs, and for delivering accurate, friendly and professional products and service at an unbeatable value. My wife and I appreciate the entire range of attention and behavior that your staff have provided. You have our thanks and have earned our unequivocal endorsement. We have already referred possible customers to you.

Thanks so much, your guys were the best!! They were both professional and very hard workers. They explained things to me and answered any question I had. It was a pleasure doing business with them and I plan on spreading the word!

All the guys were great and I was impressed with my installation.

I had my contracted maintenance done with Donnelly. I have lived in my home for 12 years and have used 3 different companies prior to Donnelly. They are by far the best company I have ever utilized. The technician who came to my house was thorough, patient and very knowledgeable.

I can't speak highly enough of the care, cleanliness and professionalism of the Donnelly Team when they installed our new system. They were prompt, worked continuously throughout the day, and were extremely courteous of both my time and my home. They took the time to review the operating and cleaning of the new system with me. My husband, the ultimate critic, was very impressed with their knowledge of the system and their answers to his questions. Thank you to such a great team!!

Thank you so much for squeezing us in on this brutally hot day!!! You guys were great and I look forward to working with you in the future.

I manage a salon in West Chester and the hardest thing to teach is customer service. Donnelly was prompt, courteous and cleaned up after themselves. I can't say enough about them. I would recommend Donnelly to anyone who asked!!

We are so pleased with the performance of our heating system since Donnelly came out. They were so patient with us and went over every option with us. They also fit us into their full schedule to help us out

Dear Tom, I just wanted to share this with you. Zach and his partner were absolutely great. They showed up on time and were very professional. Both men kept me in the loop as to what was happening. Also, they cleaned up after themselves and answered all of our questions. Please let them know how pleased we were with their service. Thank you again, Sean C. Rafferty

Tom and staff: Thanks for the great service. We are extremely happy with our new Trane Heat Pump system. It was very helpful that you were very prompt in contacting us regarding our needs and also providing us with the excellent literature for us to review. Your installer, Lou, was a true master of his trade. We felt very comfortable knowing that he would do the job right. Brian, his assistant, worked very well as a team player. Zack, your service manager, was also excellent. He didn't leave at the end of the installation until all of our questions were answered and we were comfortable with using the deluxe thermostat which we love. We are certain that should we have any concerns or questions in the future, you will continue to be there for us. Again, thanks! Jean and Ralph

Hi Karen and Tom, I wanted to let you know how much we appreciate the job your employees did for Ann and I. the job was very professional and neat. The guys answered all my questions so that I understood how the system worked. Thank you all for a great job. T Thanks, Ann and Lee Terry

Tom, couldn't be happier with the job at our house. The returns are as unobtrusive as they could be, and I understand that the piping and stuff dictated the location of the returns. They are much smaller than I thought they'd be. Your staff is extremely professional and explains things clearly. Just wanted to let you know! Susan --------------------------------------------------------------------------------