Summary

22 items · 1.5–3 hours across one weekend

Why Pre-Winter Checks Are Worth Your Time

Most expensive winter home repairs share one thing in common: they were preventable. A burst pipe, a failed furnace on a January night, or a roof leak triggered by ice dams — these tend to trace back to deferred maintenance that a couple of hours in autumn would have caught. This checklist organises the most important pre-winter tasks into clear categories so you can work through them systematically before cold weather arrives.

For a broader look at how winter prep fits into year-round upkeep, see our seasonal home maintenance guide.

Heating System

Replace or clean your furnace or air handler filter before running the heat for the season. Must
Schedule a professional heating system tune-up if one hasn't been done in the past 12 months. Must
Test your thermostat by switching to heat mode and confirming warm air flows within a few minutes. Must
Bleed radiators (if you have a hot-water system) to release trapped air that reduces heating efficiency. Should
Check that all heating vents and registers are unobstructed by furniture or rugs. Should

Air Sealing and Insulation

Inspect weatherstripping on all exterior doors and replace any sections that are cracked, compressed, or missing. Must
Apply fresh caulk around window frames where the existing seal has shrunk or cracked. Should
Check for drafts around electrical outlets and switch plates on exterior walls; add foam gaskets if needed. Should
Inspect attic hatch insulation and ensure the hatch seals tightly when closed. Nice to have

Plumbing and Pipes

Disconnect and drain all outdoor garden hoses before the first freeze, then shut off the outdoor water supply valve. Must
Insulate pipes in unheated spaces — garages, crawl spaces, and exterior walls — using foam pipe insulation. Must
Locate your main water shut-off valve and confirm it operates freely so you can act quickly if a pipe bursts. Must
Drain and winterise irrigation systems and outdoor sprinkler lines if you live in a climate with hard freezes. Should

Roof, Gutters, and Exterior

Clear leaves and debris from gutters and downspouts so melting snow can drain freely and ice dams don't form. Must
Inspect the roof from the ground for missing, curled, or damaged shingles and arrange professional repair before snow arrives. Must
Check that downspouts direct water at least 3–4 feet away from the foundation. Should
Inspect exterior caulking around windows and doors for gaps that allow moisture penetration. Should
Trim tree branches that hang over the roof or close to power lines before ice or snow adds weight. Should

Safety Systems

Test all smoke detectors and carbon monoxide detectors, and replace batteries if needed. Must
Check the expiration date on your fire extinguisher and replace or recharge if out of date. Must
Confirm that your emergency kit includes a flashlight, batteries, blankets, and basic first-aid supplies for power outage scenarios. Nice to have

What You'll Need to Get Started

Most of these checks require only basic tools and supplies you likely already own. A few tasks — particularly heating system service and anything involving gas connections — should be left to qualified technicians. Before you begin, gather your tools and plan to work through one category at a time.

Required

Foam pipe insulation

Wraps exposed pipes in unheated areas to prevent freezing.

Required

Weatherstripping

Seals gaps along exterior door frames to stop heat loss and cold drafts.

Required

Exterior-grade caulk

Fills cracks around window frames and door surrounds to block air and moisture infiltration.

Required

Gutter scoop or garden trowel

Removes compacted leaf debris from gutters safely and efficiently.

Required

Replacement furnace filter

Restores airflow and heating efficiency at the start of the heating season.

Optional

Binoculars

Allows roof inspection from the ground without the need to climb a ladder.

Optional

Foam outlet gaskets

Insulates behind outlet and switch plates on exterior walls to reduce drafts.

Some Tasks Require a Licensed Professional

Any work involving gas lines, your electrical panel, or structural roof repair should be performed by a qualified, licensed contractor — not as a DIY task. Attempting these without proper training and equipment carries serious safety and legal risks. Check whether local codes require permits for certain repairs before proceeding.

Heating System and Energy Efficiency

Your heating system works harder in winter than any other season. Addressing it early gives you time to schedule professional service if a problem is found — rather than scrambling in December. For a detailed look at furnace and HVAC maintenance, including what to tackle yourself and what to hand off, see our HVAC and furnace maintenance guide.

Air sealing is equally important: the U.S. Department of Energy notes that drafts around windows, doors, and electrical outlets are a leading cause of heating inefficiency in older homes. Caulk and weatherstripping are inexpensive and straightforward to apply.

Carbon Monoxide Risk Rises in Winter

When homes are sealed against the cold and heating appliances run continuously, carbon monoxide (CO) risks increase significantly. Ensure your CO detectors are working and positioned correctly — typically one per floor and near sleeping areas. If a CO detector sounds, leave the building immediately and call emergency services. Never attempt to locate or fix the source yourself.

Pipes, Roof, and Exterior

Outdoor plumbing, roof condition, and gutter drainage all demand attention before the first freeze. Water expands when it freezes, and even a small crack in a pipe or a blocked gutter can escalate into a major repair. Complement these checks with the detailed exterior tasks covered in our autumn home closing guide.

When inspecting the roof, work from the ground with binoculars where possible, or hire a roofing professional if you spot potential issues. Never work on a wet or icy roof surface.

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The content on this site is for informational purposes only and is not a substitute for professional advice. Always consult a qualified professional for guidance specific to your situation.