A snow-covered two-story house photographed at night during a snowstorm, with one illuminated upstairs window.

HVAC Repair in Laconia, NH

Homes here need heat from September through May and cooling from July through August. If your system quits, tell us what it's doing and a licensed contractor who covers Belknap County will get in touch.

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Step 1 of 3: Equipment
An unfinished basement containing a forced-air furnace with metal ductwork, exposed wooden ceiling joists, a hanging Edison bulb, and bare concrete floors.

Nine months of heat, and nights near 14 above zero

Your furnace or boiler in Belknap County runs from September through May. On winter nights that average 14°F, it cycles on and off again and again to hold the house at temperature, and that kind of use wears on the igniter and the heat exchanger before their time. Close to half the homes here heat with fuel oil, so the burner, the nozzle, and the filter all take that same load.

Summer is short here, just July and August, with afternoons near 79°F. The air conditioner does not run hard or long, but it still has to work when those weeks come, and a system that sat idle for months can be slow to start or short on refrigerant the first time you switch it on.

Belknap County has seen 44 winter storms and 38 damaging wind events over the past ten years, and in New Hampshire, 22% of households went at least 24 hours without power in 2024. When the power drops on a night that cold, the heat stops with it, and a house cools fast.

9 months
September through May, your system heats
2 months
July through August, it cools
14°F
the average winter night it heats against
79°F
the average summer afternoon it cools against
Isometric line illustration of a cutaway single-story house showing interior rooms with furniture, ceiling ductwork, and an exterior furnace unit with a tall flue pipe.
Your system heats September through May and cools July through August.

NOAA nClimDiv, 1991–2020 normals

New Hampshire has no state license for HVAC contractors.

There is no state license and no state registration for HVAC work in New Hampshire. Belknap County keeps no state record of who does this work, what training they have, or whether anyone has tested them on it. A contractor can advertise heating and cooling repair here without the state having reviewed anything about them.

That leaves the screening to whatever the contractor can show you on their own, since no state board stands behind the work. For a repair on a system that burns gas or moves refrigerant, that absence is worth knowing before the work starts, not after.

Source: New Hampshire General Court

Why is my heat not working?
The most common reasons are a tripped breaker, a thermostat set wrong, a dirty filter choking off airflow, or the pilot light or igniter failing to light the burners. With winter lows here averaging 14°F, a furnace that shuts down and stays down needs a contractor out quickly, since a home can lose heat fast at that temperature. If the thermostat display is blank or the breaker keeps tripping, that points to an electrical problem rather than the furnace itself.
Why is my system running but not cooling the house?
If the blower is running but the air coming out isn't cold, check the outdoor unit first. It should be running too, and the fan should be turning. A dirty filter or a coil blocked with ice will cut off airflow and stop the system from cooling even though it sounds like it's working. If the outdoor unit isn't running at all, or the coil has ice on it, turn the system off and call a contractor rather than letting it run.
What can I check before calling for HVAC repair?
Start with the thermostat. Make sure it's set to heat or cool as needed and the batteries aren't dead. Check the breaker box for a tripped breaker, and pull the filter to see if it's clogged, since a blocked filter can cause both heating and cooling problems. If the system runs on fuel oil, check the tank level, since almost half the homes here heat with oil and an empty tank looks like a broken furnace. After a storm, also check that nothing outside is blocking the outdoor unit or vent, since this area sees both heavy winter storms and damaging wind through the year.