The Complete Winter Home Maintenance Checklist

Your furnace has been running non-stop since fall. A clogged filter forces the blower motor to work harder, raising energy bills and risking overheating. Swap in a fresh filter at the season's midpoint to maintain airflow and indoor air quality.

Winter heating dries indoor air, which can crack wood floors, loosen furniture joints, and irritate respiratory systems. Check your humidifier's output and aim for 30–50% relative humidity. Clean the humidifier reservoir to prevent mold and mineral buildup.

When temperatures drop below 20°F, open cabinet doors under sinks on exterior walls to let warm air circulate around pipes. Let faucets drip slightly on the coldest nights. A single burst pipe can cause $5,000 or more in water damage within hours.

Your water heater works hardest in winter because incoming water is colder. Check the temperature setting (120°F is optimal), test the pressure relief valve, and drain a few gallons to flush sediment. This keeps efficiency up and extends tank life.

Ice dams form when heat escaping through the attic melts snow on the roof, which refreezes at the eaves. Watch for large icicles and ice ridges along the roofline. If you spot them, use a roof rake to clear snow from the first three feet of the roof edge.

Heavy, wet snow can exceed your roof's load capacity — especially on flat or low-slope sections. After major storms, visually inspect for sagging or unusual creaking sounds from inside. If accumulation exceeds 12 inches of wet snow, consider hiring a professional to clear it.

Proper attic insulation keeps heat inside your living space and prevents the roof warming that causes ice dams. Check that insulation is evenly distributed and hasn't been displaced by pests. Ensure soffit vents are clear so cold air can circulate under the roof deck.

Hold a lit candle or incense stick near window frames and door edges on a windy day — flickering indicates air leaks. Apply temporary weather stripping or rope caulk to seal gaps. Even small drafts can increase heating costs by 10–25% over the winter.

Furnaces, gas fireplaces, and space heaters all produce carbon monoxide risk. Test every CO detector in your home, especially those near bedrooms and heating equipment. Replace batteries proactively — a failed detector during a furnace malfunction can be fatal.

Winter brings increased fire risk from space heaters, fireplaces, and holiday decorations. Verify that fire extinguishers are fully charged and accessible. Stock your emergency kit with flashlights, batteries, blankets, and bottled water in case of extended power outages.

Keep walkways, steps, and driveways clear of snow and ice to prevent falls. Also clear snow away from foundation vents and your furnace exhaust vent — a blocked exhaust can cause carbon monoxide to back up into your home. Apply salt or sand for traction on icy surfaces.

After major ice storms, walk the perimeter of your home and look for damaged gutters, cracked siding, broken tree limbs near the house, and displaced downspouts. Ice-laden branches can fall without warning — remove any that hang over your roof or power lines by calling a certified arborist.