Sprinkler system  Have your sprinkler system blown out in order to prevent it from freezing and leaking.   

Caulking and weather stripping  Inspect the caulking and weather stripping around windows and doors and check for cracking and peeling.

Ceiling fans  Reverse the direction of ceiling fans so the blades turn clockwise, forcing force warm air around the room.

Furnace Have your furnace tuned including changing the filter and making sure the thermostat is working.

Heating ducts  Ducts should be cleaned every two years.

Smoke alarm and carbon monoxide detectors  Test smoke alarms and carbon monoxide detectors and install fresh batteries.

Gutters  Clean your gutters to prevent clogs that can cause rainwater spill over or back up and freeze.