Winter home maintenance checklist

Health Canada advises checking exhaust vents during and after snowstorms, since a blocked vent can let carbon monoxide build up inside.

The unit needs airflow. If ice keeps building up and doesn't clear on its own, call a technician.

Natural Resources Canada recommends changing or cleaning filters every three months or as they become loaded.

CMHC advises clearing snow or frost that blocks the vents in winter and cleaning filters about every two months.

Natural Resources Canada notes that excessive condensation on double-glazed windows means there is too much moisture in the air.

It lets warm air reach the pipes most likely to freeze.

If a pipe bursts, shutting off the water quickly limits the damage.

Many home insurance policies have conditions for homes left empty, so check yours before you go.

Ice dams can force meltwater under shingles. Don't chip at ice on the roof: hire a roofer.

Never climb onto a snowy or icy roof.

Clear access matters for your safety and for utility and emergency crews.

Health Canada recommends testing smoke alarms every month and replacing any that are more than 10 years old.

Health Canada warns never to operate a generator indoors because of the risk of carbon monoxide.

Health Canada advises never idling vehicles in the garage, as exhaust can seep into the house.

Health Canada recommends servicing extinguishers as the manufacturer instructs and practising an escape plan with your family.

Winter storms can cut power and block roads for a while.

Health Canada recommends testing for at least 3 months, ideally in the fall or winter.

Water that gets behind failed caulking can damage walls and floors unseen.