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Woman removing cookies from oven iStock

Pinpoint and Plug Air Leaks

Now that temperatures are dipping, search for spots where your home is losing its heat.

Check for drafts

M-D Window Seal Foam for Weatherstripping Dana Schiffman

Wet one hand and run it around windows, doors, and heating-duct joints—the moisture will make it more sensitive to cold air. You can also light a stick of incense and see if the smoke changes direction as you move it along the same pathways. To close gaps around windows and doors, use adhesive-backed EPDM rubber or foam weatherstripping (shown: M-D Window Seal Foam, from $4.18 for a 10-foot roll; lowes.com). Add an insulating sweep on any drafty door bottoms. Patch leaky seams in ductwork with HVAC foil tape.

Evaluate attic insulation

Old insulation may be compressed or have fallen out of framing bays, leaving bare spots. Thin R-19 batts should be upgraded to at least R-38 batts, or R-49 if you live in northern regions. Use canned urethane spray foam to insulate around pipes and cables where they enter the attic.

Schedule an energy audit

Find out if your local utility offers audits for free or at a low cost, or partners with a local company to do them. Prices range from about $100 for a walk-through and bill assessment to an average of about $400 for a more thorough investigation. Some utilities also offer free or discounted air-sealing materials and rebates for energy-saving upgrades such as insulation, air sealing, and energy-efficient appliances. For more information on energy audits, go to: energy.gov/energysaver/home-energy-assessments.

Avoid a Burst Pipe

If the temperature falls below freezing for a few days and plumbing runs up a poorly insulated exterior wall, pipes can freeze, blocking the flow of water—you turn on the faucet, and nothing comes out. Worse yet, over time, a frozen pipe can burst. Here’s how to thaw one out to prevent that:

  • With the faucet handles open, feel along the exposed pipe to locate the frozen section; the pipe will be extremely cold and may have condensation or even ice on its surface.
  • If it’s below the sink, open cabinet doors to let room-temperature air warm the interior.
  • If that doesn’t do the trick, or the pipe is in an unfinished basement, place a space heater nearby or direct a hair dryer or heat gun onto the frozen area; never use an open flame, which can set fire to nearby trim or wood framing.

Beware of Floods

Water alarm under sink, near floor Courtesy Moen

Gutters overflow...pipes fail... water heaters can spring a leak. Many things can increase the risk of a basement flood. Installing water alarms on the floor near potential sources can warn you of a deluge before it gets too deep.

These automatic sensors are relatively inexpensive (some cost less than $20), are easy to set up, and will detect as little as 1/32 inch of water. More expensive versions come in multiples and send notifications to your smartphone via Wi-Fi (shown: Flo by Moen Smart Leak Detector, $130 for three; homedepot.com).

Give Your Oven a Fresh Start

Woman removing cookies from oven iStock

Holiday meals give your oven a workout, so clean it now before the stuffing hits the pan. Commercial cleaners can be caustic, and if there’s a lot of buildup in the oven, the self-cleaning option can get smoky—and even trip the safety on the appliance’s thermostat. Try this safer, effective fix instead:

  1. Mix up a cup of baking soda and enough white vinegar to create a paste, and allow the foam to subside.
  2. Apply the paste with a chip brush to the inside of the oven.
  3. Let the mixture work its magic overnight, then go back and wipe it out with a damp sponge or nylon scrubby.

Act Now to Prevent Potholes

When water seeps into crevices in an asphalt driveway and freezes, it expands, enlarging the cracks and sometimes birthing potholes in the process. Uneven surfaces pose a trip hazard and can catch the blade of a snowplow, causing even more damage. To bridge driveway cracks, use a rope-like asphalt crack filler (available at home centers): After cleaning out any loose debris and pushing the rope into the crack, bond it to the asphalt with a propane torch or a heat gun. For divots deeper than 1 inch, try a ready-mix blacktop repair compound: Overfill the area by about 1 inch, then tamp it level with the surrounding surface.

Upgrade to a Plug-in Generator

Plug in generator Courtesy Generac Power Systems

Portable gas-powered generators are great to have when a storm takes out your electricity, but running extension cords into the house from the outside can be a nuisance. Using a cord that’s undersized or in poor condition is a fire hazard.

Before the deep freeze takes hold, have an electrician connect a manual transfer switch panel to your main breaker panel; this allows you to power any of the most important circuits—furnace, water pump, and refrigerator, say—with the generator by just flipping a switch (shown: HomeLink 50A Manual Transfer Switch Kit with Aluminum PIB and Cord, from $800; generac.com). And remember: Always run a fuel-burning generator outdoors, never inside the house or garage, to avoid the risk of carbon monoxide poisoning.