McDonnell Mechanical Services

Needed furnace replacement at my house in Chatham. Got quotes from a number of local providers. Decided to go with McDonnell. Their price was in-line those received with by others. But their reliable communication, help in identifying/explaining options, and reliability made the difference. The final cost and project timeline ended up being exactly what we had agreed on. Now will use McDonnell for my annual ac service as well.

McDonnell Mechanical installed a new ductless system in our condo. From the start they listened to our needs (and HOA requirements) and provided us with a great system. Most companies can do that, but they showed their 5-star qualities when we had manufacturer issues with some of the equipment. McDonnell pushed back on the manufacturer, resolved the issue in a timely manner, and kept us informed all along the way.

Used McDonnell to install new heating system for my house on the cape and for annual heating & ac tune ups. Great people. The founder Jim McDonnell even will take the time to answer any questions i have with my systems.

Working with McDonnell Mechanical Services to replace our Boiler, AC, and Dehumidifier was the most seamless experience possible. To a person, from the company owners, to the office staff, and the installation guys, we've never dealt with nicer, friendlier, more helpful, and efficient people. You get personal service 100% of the time. You can't go wrong with McDonnell Mechanical Services!

From the first call to the completion of the install of a new furnace McDonnell Mechanical is the best. They are extremely professional and helpful. Tom our rep walked us through each step of the process from the estimate to the installation. The technicians Keven and Sean did a great job and took the time to explain each aspect of the new furnace to us. They were very respectful of our home and left the work area cleaner then when they arrived. I highly recommend McDonnell Mechanical.