The major structural components, plumbing, heating, and electrical systems are inspected for visual signs of nonfunctional performance, excessive wear, and general condition are checked during the home inspection. Items inspected include the air conditioning, appliances, breaker panel, cabinets, ceilings, disposal, doors, exterior siding, floors, foundation, framing, heating system, insulation, outlets, roof, showers, sinks, smoke detectors, stairs, switches, toilets, tubs, walls, water heater, and windows.