Roof

Check for broken, damaged or loose shingles; small holes; and loose nails; check flashing around all dormers, vent pipes, chimneys, and any other projections where the roof covering meets an adjoining surface; gutters and downspouts; clean out leaves, dirt, and debris; check supports.

Exterior  

Repair cracks in stucco or masonry walls; spot-repair and paint any defective areas to prevent damage from freezing and thawing; clean leaves, dirt, and debris out of window wells.

Heating System Interior

Remove or winterize air conditioners; check the hot water heater for leaks; install insulating kits behind electrical plugs that are on exterior-facing walls; have chimney inspected and cleaned; close the fireplace damper when not in use.

 
Windows and Doors

Check weather stripping around windows, doors, and between foundation and siding; replace where needed; check metal weather  stripping for dents, bends, breaks, loss of tension, or other damage that could make it less effective; repair or replace where needed; repair and paint storm windows if necessary; replace worn doorstops at bottom of doors; install storm doors and windows.

Heating System

Have a qualified service technician clean and check the home heating system; vacuum vents, registers, and other heating components; install a setback thermostat that automatically regulates the temperature throughout the day.