Best HVAC and air conditioning companies in Massachusetts

Based on Google ratings and review volume as of September 2026, the top rated HVAC and air conditioning companies in Massachusetts are Morris Plumbing, Heating & Air Conditioning, Yellow Dog Plumbing, Heating & Cooling, Back Bay Mechanical AC Repair & Heating. See the live ranked list, ratings, and contact details on this page.

Every company ranked on this page serves Massachusetts and the surrounding area, including Boston, Worcester. Open any listing for its address, phone number and service area, then call the two or three closest to you. Distance is worth checking yourself: the nearest HVAC company is not automatically the best one, so this page ranks on rating and review volume first and leaves proximity to you.

After-hours availability is not part of a Google rating, so this directory cannot verify it for you in advance. An AC that dies in a heat wave, or heat that dies in a freeze, is the case for calling instead of waiting for morning. Call the top rated HVAC and air conditioning companies on this page and ask two things before you agree to anything: are you dispatching tonight, and what is the after-hours call-out fee. A company that answers both plainly on the phone is usually the one that actually shows up.

When the AC dies in July, speed matters - but so does not getting sold a system two sizes too big. A top-rated HVAC company quotes load calculations, not guesses, and stands behind the install with a real labor warranty.