Hester AC Repair

Hester AC Repair is a Winchester-based HVAC contractor covering Woburn, Lexington, Stoneham, Arlington and Medford, built for the call when a furnace or AC unit fails without warning. Reviewers keep describing the same pattern: a furnace that quit over a holiday weekend in sub-freezing temperatures, fixed the same day with a new circuit board; a technician who diagnosed a faulty unit, explained it in plain terms, ordered the part, and finished the repair on a follow-up visit. The company says its technicians are NATE certified and offers 24/7 emergency AC repair, furnace and heating repair, installation, maintenance, and ductless mini-split service. Named technicians come up often and specifically — installs, a full duct cleaning that pulled out a surprising amount of construction debris, and a refrigerant-leak repair on a tricky rooftop commercial unit are each described with real detail about what was done, not just praise. One review on this Google listing describes a leaky sink being fixed by someone named Sarah — plumbing, not HVAC — and it's unclear whether that work is actually Hester's own; two other reviews that clearly named different heating companies have already been set aside from this page, so it's worth keeping this one in mind too. Recent activity has slowed to a single review in the last six months, so anyone relying on very current feedback should ask directly about today's wait times and scheduling.