The first cold stretch of the year usually sends people straight to the thermostat. If the heat comes on, everything feels fine. But there are a few places outside the house that are worth checking before the furnace begins running every day.
Exterior vents and openings spend months exposed to leaves, insects, birds, rodents and weather. Some may barely be used during spring and summer. By the time heating season starts, a vent that looked clear in March may no longer be clear in October.
A quick walk around the house can catch quite a few problems early.











