On-Temp Inc. Heating and Air Conditioning

Discovered on a Monday during last July's heat wave that their central air had failed, one homeowner had a new compressor and air handler installed by On-Temp before the temperature hit 100 that Thursday. That kind of turnaround shows up again and again in reviews of this Taunton HVAC company: a call placed at 11:20 on a Friday morning was fixed by 12:45 the same day, and another homeowner had a full AC swap finished in one day after being squeezed onto the schedule. On-Temp is owner-operated by Joe Guimaraes, who started the company in 2018 after 18 years working for another HVAC contractor, following his training in the HVAC program at Bristol-Plymouth Vocational High School. The company works out of Taunton and covers Southeastern Massachusetts, including Raynham, Bridgewater, Attleboro, and Wareham. Across 93 Google reviews dating back to 2022 — 56 of them in just the last six months, with none negative — the same names keep coming up: Joe, Christian, Ben, and Justin. Reviewers describe combi boiler swaps, mini-split installations, and full system replacements, and a recurring detail is how much time the crew takes to explain what they did — one reviewer credited Ben with clearly explaining remotes and controls after a Samsung-to-Fujitsu system swap, and another said Joe personally called the day after a big installation just to ask how things went. One reviewer specifically noted no upselling or "cheesy sales tactics," and On-Temp holds an A+ grade with the Better Business Bureau. A couple of older reviews, from early 2024, describe the same pattern with older boiler systems — a technician who stays until the problem is actually understood, not just patched. On-Temp is a strong call for a heating or cooling system that needs replacing fast, or for anyone who wants the same technician showing up for annual maintenance. Its website lists a Massachusetts contractor registration number, MPCL# 4168, though that's the company's own claim rather than something checked against the state registry — worth confirming directly.