HVAC in New Hampshire is a long heating season with different equipment by region. Oil boilers and wood stoves share basements in the north. Seacoast houses add salt air that eats outdoor coils. Lakes camps may have a small furnace asked to do a job it was never sized for, once the family stays through winter. Valley houses still run hot water or steam. Say what is actually in the building.
A cold far room, a boiler that short-cycles, and a chimney wrong for the burner are separate problems. A fuel smell at a buried tank or a cellar tank is not a thermostat visit. Mountain nights expose a heat pump with no backup. The backup is the conversation, not a footnote. Power loss during a coastal storm or an ice storm inland leaves any system that needs electricity quiet. Know what still makes heat.
Ductless heads get added to porches and lofts. They do not fix a boiler full of air, and they do not dry a camp crawl. Condensate lines freeze when they dump outside. A wood stove without a safe flue is not a plan, it is a fire waiting on a mistake. Say if you are heating with wood, oil, or both. Radiator valves leak and look like roof leaks on the ceiling below.
Humidity is the summer problem on the Seacoast and around the lakes, not in a high mountain village. A damp first floor that smells sweet in August may need moisture control more than another degree of cooling. Finished basements in the valley stay clammy. Window units left in all year rot the casing, faster in salt air. Tell the caller which rooms were added after the original heat.
Have the fuel, the system, and the room that fails. Say whether this is no heat, a smell, a camp being used in winter, or cooling. Mention backup heat if you have it. Call the number on this page.