AirSupp Heating & Cooling

AirSupp Heating & Cooling runs out of a Somerville office and, by its own description, covers Somerville, Cambridge, and the greater Boston area with heat pump and ductless mini-split installation and replacement, plus general HVAC work. Nearly every review names the same technician — Serhii, sometimes spelled Sergey or Sergei — as the one who actually shows up and does the work, which gives the operation a small, hands-on feel rather than a rotating cast of techs. Google currently shows a 5.0-star average across 29 ratings, and the 24 written reviews behind that number, spanning mid-2025 through June 2026, don't include a single negative one; the last six months alone added 14 more, still zero negative. The specifics in those recent reviews are consistent: he researches a problem before arriving so he can explain it in plain terms, offers options that fit a stated budget, and cleans up the work area when he's done. Recent jobs described include removing a bird's nest from a dryer vent and clearing the whole duct, moving a mini-split to a new spot in a house, and replacing a condo's failed HVAC system with a brand-new mini-split within six days so a home sale could close on time. When one customer's heating quit right after a snowstorm, he tracked down parts for an obscure, hard-to-match brand and had it running again the same day. Another called him for an AC and heating tune-up plus a tankless water heater flush, and he found a leftover secondary filter in the air handler that three earlier HVAC companies had missed. For jobs done while the homeowner wasn't home, he's also noted for taking before-and-after photos of the work. The one thing worth checking directly is licensing: an unrelated third-party directory listing flags that the business might not be licensed, and nothing in AirSupp's own materials confirms it either way, so it's worth asking for a license number before signing anything. For heat pump installs, mini-split relocations, and the odd HVAC-adjacent job like vent cleaning, the reviews describe a responsive operation that explains its work up front and follows through. Confirm the license question and who's actually being assigned to the job before booking.