Get matched with top central a/c installers in Mendon, MA

"Start to finish, professional, quick, we are very happen that we hired them to install our central A/C. I would recommend them to anyone. Thanks Keith and thanks to your employee's. Great job."

"Installed central heat pump system on time with no issues. Technicians were professional and did a great job. Great communications from proposal through installation phases of project. Highly recommended."

"Expensive but professional. The electrician that did the work was excellent and seemed.to enjoy explaining what he was doing and why it had to be done that way. I felt like I learned something while he installed ceiling lights. He also cleaned up after himself like he'd never been there."

"Everything was completed with no issues. Happy with install so far."

"The entire SumZero experience was fantastic from start to finish. Paul came out and did a nice walkthrough to give us a full understanding of exactly how our system should be sized and quickly got us estimates with all MassSave included (and they take care of all of it so you get instant savings). Jackson and Lara were great to work with and did a great job with the project walkthrough and getting everything scheduled quickly. The team uses a nifty app called ServiceTitan so you always know who is coming and get live updates on their arrival which is extremely convenient. When the team showed up for the installation, they had everything they needed and were great about communicating every step along the way and asking questions to make sure everything was just how we wanted it. The attention to detail for the install was top notch (see pictures), and we are really happy with their recommendation to use a Bosch heat pump and Trane furnace. Highly recommend!"

"Metro West Mini Splits recently installed 6 mini splits in February 2025 to our new home in Marlborough, MA. Alan, Jamie, and their team were so kind, respectful, knowledgeable, timely, communicative, and easy to work with. We could not be happier with the final product! Metro West Mini Splits was also very reasonably priced, and they made the Mass Save rebate process a breeze. 100% would recommend to anyone needing heating or cooling services!"

"Called for a reminder of appointment ,stated accurate price,called with time frame and was on their way within a half hour!Absolutely fantastic company I would highly recommend , thank you so much LOUDON MECHANICAL."

"Excellent installation. Good workmanship organized and professional Andrew and Kyle explained everything well and are easy to communicate with. Plumber and Electrician also did a great job. Very satisfied with this company."

OHara Heating And Cooling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Iâ ve been a project manager for a few years, and worked with several different companies. However St Joseph Heating And Cooling stands out from the others, not only for the quality of work and professionalism, but also for the business culture itself. The company takes their time to go over the work and educate their customers. A very noble and caring way to do business. I highly recommend this company for its integrity and outstanding customer services."