BOSS HVAC

The thing customers keep writing about is that Larry picks up the phone. BOSS HVAC works out of 141 Middlesex Rd in Tyngsborough and calls itself a family-owned, third-generation HVAC contractor covering Massachusetts and southern New Hampshire — Groton, Chelmsford, Lowell and Haverhill on this side of the line, Nashua and Manchester on the other. Residential and commercial, with a stated focus on older and historic New England buildings, plus duct and dryer-vent cleaning and 24/7 emergency work. There are 30 reviews on Google since 2022, averaging 4.9 across 36 ratings, and they read like a run of weather emergencies. In December 2024 a first-time homeowner wrote that Larry answered on the third ring late in the afternoon, was at the house two hours later, and had the dead furnace out and a new one in the next day — two days before an extreme cold spell. A November 2025 customer had an install finished inside 48 hours of the first call, ahead of another cold snap, with the old unit hauled off for recycling. In May 2025 an AC quit in a heat wave and a tech was there fast. A quieter thread runs through the same reviews: not being sold things. A June 2025 customer expected a pitch for two new units and instead got the ailing ones nursed back to life. A December 2024 homeowner with a leaking water heater said the answers were honest rather than steered toward the most expensive option. Another June 2025 reviewer put it plainly — nobody tried to fleece them into work that wasn't needed. The bigger installs get described too: a December 2024 job on a Mitsubishi HyperX with a branch box and four heads, lines tucked discreetly through the basement and along the exterior, with the manufacturer's rep brought out to review the work and help with the rebate paperwork. Two things to raise before booking. The company says it holds a master sheet metal licence — that is its own statement, not something confirmed against a registry, so ask to see it along with the insurance certificate. And in July 2024 a customer left a one-star review saying they were overcharged and the fault misdiagnosed, and that a second company found a simple, cheap fix. It is the only complaint anywhere since 2022 and it is two years old, but it is worth asking how a diagnosis gets confirmed before work begins. For a furnace that dies in February or central air that quits in July, the case here is speed and a straight answer. Confirm the licence, and get the diagnosis in writing.