Winterizing Your Canadian Home: The Freeze, Leaving in Winter, and the Heating Bill

If our fall maintenance checklist is about getting your home ready for winter, winterizing is about surviving the deep cold: the burst pipe at minus thirty, the ice dam after a thaw, the empty house over the holidays. This goes deeper on the three things a general checklist skims: the freeze, leaving your home empty, and the heating bill.

The freeze is the main event

A pipe bursts because water expands as it freezes, and the pressure has to go somewhere. The highest-risk spots are pipes in exterior walls, unheated spaces (garage, crawl space), and that one cold corner every house has. To prevent it:

• Keep the heat on, even when you are away. Never let the house drop to freezing. A minimum around 13 to 15 degrees is a common floor; the exact number matters less than "well above freezing everywhere pipes run."
• In an extreme cold snap, let a faucet drip. Moving water is much harder to freeze.
• Open the cabinet doors under sinks on exterior walls so warm air reaches the pipes.
• Insulate exposed pipes in unheated areas.
• Know your main water shutoff and make sure it works, so a burst becomes a quick fix instead of a flood.

Ice dams: fix the roof temperature, not just the symptom

An ice dam forms when heat escaping into the attic melts snow on the upper roof, the water runs down to the cold eaves, and it refreezes into a ridge that backs water up under the shingles and into the house. Raking snow helps at the edge, but the real fix is keeping the whole roof cold and even:

• Attic air sealing, insulation, and ventilation are the actual cure. Air sealing closes the gaps where warm household air leaks up into the attic; together with insulation and ventilation, they stop the roof from warming unevenly in the first place.
• Clear gutters in the fall so meltwater has somewhere to go.

Leaving your home empty in winter (do not just turn it off)

This is the part most guides skip, and it is where the expensive mistakes happen. If you travel or head south for the season, do not simply lower the heat and leave.

• For a short trip, keep the heat at a safe minimum and, ideally, have someone check on the home. A burst pipe discovered in a day is a repair; one discovered in three weeks is a renovation.
• For a long absence, consider fully winterizing the plumbing: shutting off and draining the water, and adding non-toxic plumbing or RV antifreeze (never automotive antifreeze) to the drain traps, so there is nothing to freeze.
• Check your insurance, because this is not optional. Many home policies require that a home be heated through the winter, or that a home left vacant be checked regularly (or the plumbing drained), and water or freeze damage may not be covered if those conditions are not met. Read your policy's wording on vacancy and freezing before you leave, and arrange the checks it requires.

Cutting the heating bill

Winter is the expensive season, and the cheap fixes return the most:

• Seal the drafts. Weatherstripping and caulk around windows and doors are the highest-return dollars you will spend all winter.
• Set back the thermostat when you are asleep or out; a programmable or smart thermostat does this automatically.
• Reverse ceiling fans to clockwise on low to push warm air back down.
• Service the furnace so it runs efficiently, and change the filter on schedule. Efficiency upgrades can also qualify for rebates, which improves the math; check what is currently available before you assume.

Safety in heating season

• Test carbon-monoxide and smoke detectors. CO risk rises exactly when the heat comes on.
• Use space heaters carefully: on a hard floor, clear of anything flammable, and never left running unattended.
• Keep exhaust vents and intakes clear of snow, including the furnace and dryer vents, so combustion gases vent properly.

Frequently asked questions

What temperature should I keep an empty house at in winter? Well above freezing everywhere pipes run, commonly a minimum around 13 to 15 degrees. Never turn the heat fully off.

Does insurance cover a burst pipe if I was away? Only if you met the policy's conditions. Many policies require the home to be heated or checked regularly (or the water drained) when vacant in winter, and freeze damage may not be covered otherwise. Check your wording.

What actually prevents ice dams? A cold, evenly-temperatured roof, which comes from attic air sealing, insulation, and ventilation. Clearing gutters helps; raking only treats the edge.

What is the cheapest way to cut my heating bill? Sealing drafts with weatherstripping and caulk, and setting back the thermostat when you are asleep or out.

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The homeowners who never face a winter disaster are the ones who prepared for the cold, not just the season. Habyn keeps your maintenance history and reminders in one place, so winterizing is a routine, not a scramble. See how Habyn helps homeowners.