Furnace Repair in Lebanon, NH
Furnaces here run from September through May. If yours quits, tell us what it's doing and a licensed contractor who covers Grafton County will get in touch.
Tell us about the job
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Nine months of heat puts a lot of hours on your furnace
In Lebanon, your furnace runs from September through May. On winter nights averaging 10°F, it cycles on and off for hours at a stretch to hold the house at temperature. 43.2% of homes here heat with fuel oil, and an oil furnace depends on a working ignition system and a clean burner to fire reliably at those temperatures.
Grafton County sees hard weather. Ten years of records show 74 winter storms and 133 damaging wind events. Storms like that knock out power, and in New Hampshire, 22% of households lost power for 24 hours or more in 2024. When the power drops on a cold night, your furnace stops running with it, and you notice fast.
- 9 months
- September through May, your furnace is on duty
- 10°F
- the average winter night it heats against
- 74 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
New Hampshire has no state license for HVAC contractors.
There is no state license or registration behind the name on the truck. Nobody at the state level has tested this contractor's furnace knowledge or kept a file on their work. Whatever confidence you have in the person doing this repair comes from the contractor directly, not from a state record.
A furnace repair still touches gas, and a bad connection there is the part that can hurt someone. New Hampshire has no state license or registration to stand behind that work. Nothing at the state level checks it.
Source: New Hampshire General Court
- Why won't my furnace turn on?
- Most often the thermostat isn't sending power to the furnace, or the furnace isn't getting power itself. Check that the thermostat is set to heat and the temperature is above room temperature, and check the breaker and the furnace's own power switch, which looks like a light switch near the unit. If those are fine, the igniter or the flame sensor may have failed, or a safety switch has shut the furnace down because of a clogged filter or a blocked vent. With nine months of heating season here, a furnace that won't start needs a contractor to check it soon.
- Why is my furnace blowing cold air?
- If air is moving but it's cold, the furnace may be stuck in fan-only mode, or it may be trying to heat but failing partway through its startup. Check that the thermostat fan setting is on auto, not on. If it's already on auto, the furnace may be shutting off due to a dirty filter, a cracked heat exchanger, or an ignition problem, and it needs a contractor to look at it. At 10°F average lows through the winter here, this isn't something to leave for long.
- Why won't my furnace pilot light stay lit?
- A pilot light that won't stay lit usually means the thermocouple isn't sensing the flame correctly, so the gas valve shuts it off as a safety measure. It can also mean a draft is blowing the flame out, or the pilot orifice is dirty and the flame is too small to reach the thermocouple. Relighting it yourself may work for a night, but if it keeps going out, the part needs replacing. Furnaces with a standing pilot don't rely on electricity to keep that flame lit, so a power outage isn't the cause.