HVAC in Seattle is mostly a heating story with a damp plot, plus a short run of afternoons when the house suddenly needs cooling. Many houses still have an aging furnace and no real air conditioning, tucked in a crawl space, a closet, or a damp basement on a hill. The long wet season means the system runs in clammy air for months, filters load up, and ducts in a crawl space sweat and sag. A heat pump conversation here is about that long gray stretch, not about a desert summer.
Say what is in the house now, in plain words. Gas furnace, heat pump, baseboard, wall heaters, or a mix added one room at a time. Name the closet, the crawl full of soil smell, or the attic under the roof where the equipment actually lives. No heat, weak heat, a burning smell, a rattle, or a back bedroom that never matches the thermostat are different calls. A condensate line that clogs and drips onto a ceiling is a Seattle classic once cooling or a high-efficiency furnace is in the picture.
Ask about the ducts. Leaky runs in a wet crawl pull crawl air into the living room. A return starved by closed doors makes the unit loud and the far room cold. Filters matter when the marine air is full of whatever the trees are shedding, and again when summer smoke sits on the city. Say which rooms fail and whether the outdoor unit is running, humming, or silent.
If someone in the house needs reliable heat during a cold snap, say that first. Those snaps are shorter here than inland, and they still empty a house of patience when the furnace is dead. If a claim is involved because a covered event soaked the equipment, keep that separate and have the deductible in mind.
Seattle damp does not take the winter off. Call with the neighborhood and a plain report: heat or no heat, and whether the outdoor unit is spinning or silent. Call the number on this page.