Get matched with top heating and air conditioning pros in Berkley, MA

"Guy was hands down the best HVAC person we have ever had help us in Boston. Totally transparent, professional, easy to work with. If you need help, I would recommend asking for Guy to come out if possible."

"Dylan was amazing. My hvac person retired & I found Dylan when my Central air decided to act up. He explained my unit was in approaching its last days but he could attempt to repair it if I wished but I decided it was time to do a complete new heating & cooling system & he made it a easy process. No pressure & no stress. Now we’re ready for the heat wave that’s apon on us. Thank you Dylan & your team for your professionalism & great service. I highly recommend & they’re my go to for plumbing as well as I’m about to have them replace my hot water tank before it becomes an issue"

"Excellent. 2 perfectionist electricians, Sam and Steve affiliated with Cotti Johnson HVAC & Electrical, completed the comprehensive work with meticulous attention to details in half a day. They are knowledgeable, kind professionals. If I need any electrical work in the future, they are the first to contact in my list."

Welcome!\n\nAt JN Service HVAC & Plumbing, we’re proud to deliver licensed, insured, and trusted HVAC and plumbing solutions to homes and businesses across Massachusetts.\n\nWith a solid reputation built on Excellence, Commitment, and Responsibility, we help you prepare your home or commercial space for the season ahead — before winter problems strike.\nOur priority is your comfort at home.\n\nWhy Choose Us?\n- 5-star Rated Company: We are a 5-star rated company with more than 1200 satisfied clients.\n- Customer Success: We focus on long-term relationships.\n- Specialist: Expert knowledge and proven skills.\n- Licensed and Insured: Our services are fully insured, providing you with peace of mind.\n- Quality in Everything we do: Best service with the best products.\n- Double-year warranty on labor.\n- Emergency Service: We're ON 24/7 to ensure your well-being.

We are a dedicated air quality company committed to delivering exceptional service and professionalism to our valued customers. Our skilled technicians are trained in the latest air duct and dryer vent cleaning techniques. We serve both commercial and residential properties, improving indoor air quality, enhancing HVAC efficiency, and helping lower energy costs. Safety is our top priority, especially in dryer vent cleaning, where proper maintenance plays a critical role in preventing fire hazards. By staying updated with industry advancements, we deliver reliable and effective solutions tailored to each customer’s unique needs.

"Rapid response and efficient solution to HVAC repair within a day!"

"Chris was extremely professional when pricing and completing the work. I had ductless A/C installed on 2 floors (June 2019). I could not be happier with the results and the customer service provided. Chris made a point to insure everything was documented via email, informed me of rebate for this work and did an outstanding job in communicating not only back to me but to insure the supplier had the materials on site as well as the electrician. I would highly recommend CMA Heating and Air."

"i called to have my HVAC duct work cleaned. They asked a few questions, gave me a very reasonable quote, and sent Verne out next day. I got tired just watching him do a thorough job for 3+ hours. I couldn't be happier. If you are debating who to hire just stop and call them."

"My electrician from Cotti-Johnson HVAC was a master electrician. If you get him, you are getting the best. I went with the most expensive work package of the 3 that were presented. First off, it was pricey. I knew that going in. I want Cotti-Johnson to understand that I am serious about a working relationship with them. I feel I have done that with their electrical department. Now, if I need their plumbing or HVAC service, our relationship can build off the first experience."

"MTS came to repair our AC system when it went out in the middle of the night. They were able to address our low refrigerant and flooded basin quickly and efficiently. Even though this is an incredibly busy time for HVAC techs, they were always responsive. When the issue in our system turned out to be a bigger problem, they were flexible with the work that had already been done. We'd be glad to work with MTS again in the future."