Accutemp Engineering LLC.

A 4.8-star average across 127 Google reviews and a 4.9 on Angi both point the same direction: Accutemp Engineering, out of Stoneham, is the call homeowners across the Boston area and southern New Hampshire make for furnace and AC trouble. The company says it has been at it since 1978, growing under Bob Webster's leadership from a small residential and commercial outfit into one of the area's larger HVAC operations, doing everything from boiler work to whole-house ductless systems. The last few months tell a consistent story. In June, a four-head ductless mini-split install went in without a hitch, from office scheduling through the final walkthrough, and a furnace-replacement customer who collected 16 quotes before picking Accutemp praised the crew for handling permits cleanly and finishing in days rather than weeks. When a gas furnace quit right before a February cold snap, technician Tom had a diagnosis and a repair quote out the same day; when another system failed mid-snowstorm, a different crew had it running again quickly. Techs get named and remembered in these reviews — Miguel for a spring tune-up, Manny for keeping a customer informed mid-repair — usually a sign the same people keep showing up to do the work. Not everything is spotless. Angi's page notes a 3-star review over a ductwork project where communication about what was and wasn't finished broke down, and a review on Carrier's own site mentions only "mixed feelings" about the company without giving specifics — a mild outlier against the otherwise strong, consistent record here and on Angi. It's worth asking upfront how a job will be scoped and confirmed in writing, especially for a larger install. Accutemp's Massachusetts HVAC license (26-SM-B) is active, and the volume of reviews — 75 across five sources going back to 2018 — gives more confidence than a newer, thinly-reviewed shop would. For anything from an emergency repair to a full system replacement in the towns it lists as its service area, it's a reasonable first call; just get the scope of the work in writing before the crew arrives.