Furnace Repair in Claremont, NH
Furnaces here run from September through May. If yours quits, tell us what it's doing and a licensed contractor who covers Sullivan County will get in touch.
Tell us about the job
It takes about a minute.
Nine months of heat, on nights near 13 above zero
Your furnace in Claremont runs from September through May, nine months of the year. On winter nights that average 13°F it runs longer and more often to keep the house warm, and close to half the homes here heat with fuel oil, which puts real hours on the igniter and the burner over a season that long.
Sullivan County has had 37 winter storms and 58 damaging wind events over the past ten years, and across New Hampshire, 22% of households lost power for at least 24 hours in 2024. When the power comes back after an outage, the furnace has to restart cold, and that is often when a weak igniter or a failing part finally gives out. You will notice it as a house that will not warm up, or a burner that will not light at all.
- 9 months
- September through May, your furnace is on duty
- 13°F
- the average winter night it heats against
- 37 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.
New Hampshire does not license or register HVAC contractors. There is no state test behind the work, no license number tied to the contractor, and no state record of who has done this kind of job before. That is true everywhere in the state, including Sullivan County.
A furnace repair often involves gas connections, and that is the part of the job where a mistake matters most. In New Hampshire there is no state license standing behind that work. Whatever confidence you have in the person doing this repair rests on the contractor directly, not on anything the state has checked.
Source: New Hampshire General Court
- Why won't my furnace turn on?
- Most often the thermostat isn't calling for heat the way it should, or the furnace isn't getting power. Check that the thermostat is set above room temperature and has fresh batteries if it uses them. Next check the furnace switch, which looks like a light switch, and the breaker for the furnace. If those are fine, a safety switch inside the furnace may be shutting it down, and that needs a contractor to find and fix.
- Why is my furnace blowing cold air?
- If air is moving but it's not warm, the furnace may still be starting up. Gas furnaces run the blower for a short time before the flame is up to temperature, so a few minutes of cool air at startup is normal. If it stays cold, the igniter may not be lighting the burners, or the flame sensor may be shutting the burners off right after they light. Either one keeps the furnace from producing heat even while the blower keeps running, and that calls for a contractor to check.
- Why won't my furnace pilot light stay lit?
- This usually comes down to the thermocouple, the small part that senses the pilot flame and tells the gas valve it's safe to stay open. When it wears out or sits out of position, it reads the flame as out even when it's lit, and the valve shuts the gas off. A draft blowing out the pilot is possible too, but if it keeps happening, the thermocouple is the more likely cause. It's a small part but it needs a contractor to replace, since it involves the gas line.

