Heating
Furnace repair and replacement, boiler checks, and thermostat wiring that was “temporary” in 2009. Combustion safety is part of the visit, not an add-on.
Services
Four trades, one truck in the story.
Cooling
Central air, ductless heads for the room over the garage, and heat pumps where the sample climate math works.
Plumbing
Supply leaks, drain stops, and fixtures. Sewer cameras are offered when a guess would waste the afternoon.
Water heaters
Tank swaps the same day in the fiction when the unit is a common size. Tankless is specified with the gas line in mind.