HVAC in Charleston has to heat older Kanawha Valley houses through a West Virginia winter and pull humidity out of them when summer air sits in the valley and will not leave. Hill houses and valley-floor houses do not share a load. A shady South Hills wall stays cool and damp. A house on the open valley floor bakes and stays muggy. Radiators, old furnaces, and later ducts are all here. Say what you have.
Equipment ends up in basements that have seen high water, in crawls, and on pads carved into the slope. Clearance is poor when the hill is the backyard. A boiler can heat the lower floor and give up on the top. Window units still do the bedrooms. If that is the system, say so. A filter is not a flue repair, and it is not a fix for a condenser with no airflow against a retaining wall.
Describe the bad room. The upstairs will not heat or will not cool. The house smells at the first cold start. Ice on the outdoor line, a thermostat in a drafty hall, and ducts that run through a cold crawl are useful facts. Valley inversions make the air feel heavy. Do not guess the part that failed. Fuel, if you know it, belongs in the first minute: gas, electric, oil, or a heat pump.
A no-heat morning and a muggy-season checkup are different calls. Houses under the hill get less sun and more damp, so the same equipment feels different there than on a west-facing valley lot. Say which lot. Combustion gear needs an honest description. The Kanawha does not moderate this into a mild climate. It traps heat and cold in turn.
HVAC in Charleston is valley humidity, hillside shade, and older equipment in West Virginia houses between the Elk, the Kanawha, and the ridges. Call the number on this page.