HVAC in Kentucky works hardest at pulling water out of the air, then still has to heat through damp cold and the occasional ice. Attics bake, and equipment parked there suffers. Older houses may have a basement or crawl furnace with weak upstairs delivery. Newer houses lean on heat pumps. If the house is heavy and warm, or cold and clammy, say which before the brand. A system that cools and leaves the air wet is not finished.
A dead compressor is not the first guess. Choked filters, a crushed return, and a coil that has frozen because air could not move all imitate one. Condensate lines clog in the long humid stretch and overflow into ceilings that look like roof leaks. Crawl-space ducts sweat and collapse. Ask what was ruled out. Combustion equipment still needs a clear flue, even in a climate people think of as only a cooling climate.
Replacement follows the house, the shade, and the attic, not the sticker on the old box. Copying the old size because it fit the closet leaves the same sticky upstairs. A new outdoor unit on an old coil is not a matched pair. Say whether the ducts run through a hot attic or a damp crawl. A no-cool night in July does not wait, and neither does a no-heat morning when ice takes the power and the house.
Outdoor units sit in humidity, pollen, and cottonwood season, then in leaves. Keep the coil breathable, but do not open a gas compartment to explore. Window units in older upstairs rooms drip into plaster and become a wall problem. If a freeze burst may become a claim, say so when you describe the equipment. Heat and moisture together are the Kentucky load. Treating only the thermometer misses the complaint.
Say cooling or heat, sticky air or a dead unit, and the town. Have the model plate only if it is easy. Say crawl, basement, or attic ducts. Call the number on this page.