Basements: insulation materials, piers/support posts, beams, floor structure above, etc.
Heating and air conditioning: energy source, heating type, thermostat operation, temperature differentials, location, distribution, filters, electrical disconnects, etc.
Attic: access hatch or pulldown staircase, roof structure, ceiling structure, insulation materials, attic fans, whole house fans, etc.
Crawl space: insulation materials, pier/support posts, beams, floor structure, vapor barriers, water leaks, high moisture, mold/mildew, rot damage, termite damage, etc.
