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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.
Our Reviews
See What Your Neighbors Are Saying
It's a frightening experience when a Heating/Cooling system needs to be replaced.
Toilets are flushing. Shower is flowing. Fortunately Donnelly Plumbing and HVAC have knowledge, experienced and compassionate employees. Thank you for your expeditious service. Toilet replaced today, 07/07/25
Toilets are flushing. Shower is flowing. Fortunately Donnelly Plumbing and HVAC have knowledge, experienced and compassionate employees. Thank you for your expeditious service. Toilet replaced today, 07/07/25
denise richardson
3 days ago
Jeremy came to our house to provide a diagnostic. He was extremely knowledgeable and explained several issues to my wife and I, who are not well-versed in plumbing. We look forward to working with Jeremy on our plumbing projects, confident he will do great work!
Nate Geare
4 days ago
Very pleased with service from Donnelly’s last week. Nafeese Taylor was friendly, professional and knowledgeable. AC systems tuned up and ready for summer. We’re in good hands.
Christopher Miller
4 days ago
We had a very frustrating situation with low voltage coming into our home. After a week of little help from PECO, we had Donnelly’s come out to check the interior electric of our home.
Brent, Sam, and Roger went above and beyond to help diagnose the problem, work with PECO to mend corroded wires, and ultimately replace our faulty meter box. I believe they are 100% the reason we were able to get back into our house as soon as we did. We will be using this company for any electrical jobs we have in the future.
Brent, Sam, and Roger went above and beyond to help diagnose the problem, work with PECO to mend corroded wires, and ultimately replace our faulty meter box. I believe they are 100% the reason we were able to get back into our house as soon as we did. We will be using this company for any electrical jobs we have in the future.
Ellie Guttman
4 days ago
James G was great! Quickly assessed and diagnosed our AC units issues. He worked through a rainstorm to get it done for us on the spot and he was even great with our dog! 10/10 experience.
Ross Danzig
6 days ago
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