HVAC repair
Repair and troubleshooting guides for HVAC systems in Greater Boston.
Furnace Won’t Turn On: what to check before the first cold night
Most no-heat calls in the first cold week are a switch, a filter, a blocked drain or a sensor with a film on it. The order to work through, the flash code to write down, and the four symptoms that mean stop.
What an HVAC Repair Bill Is Actually Made Of
Two honest quotes for the same repair can differ by hundreds. Diagnostic fees, OEM versus generic parts, warranty that covers parts but not labor, refrigerant by the pound, and four questions that make quotes comparable.
Ice on the Lineset and a Blinking Light: what a mini-split is telling you
A ductless system reports its own faults if you read them. Blink codes, frost on the suction line, the drain that leaks down the wall, and why repeat refrigerant loss is an installation problem.
Refrigerant in 2026: what a recharge costs and when to stop paying for one
Refrigerant is not consumed, so a system that is low has a leak. What a real leak search looks like, what the R-410A phase-down changed, and the point where topping up stops being rational.
Something already broken?
Reading can wait. A dispatcher picks up day and night and can usually get a technician out the same day.
