Heating can eat nearly half of a winter energy bill, the Energy Department says. These five fixes fight back.
Caulk the Cracks
Air slips through gaps where window frames meet walls. Energy experts recommend paintable caulk inside and exterior-grade caulk outside. One afternoon with a caulk gun seals the worst offenders.
Weatherstrip Doors and Windows
Worn weatherstripping lets warm air pour out around doors. Press adhesive-backed foam into the channels where the door meets the frame. If daylight shows under a door, add a door sweep.
Film the Windows
Shrink-wrap window insulation kits cost a few dollars per window and add a still-air layer that cuts heat loss. The film goes up with double-sided tape and a hair dryer, and peels off cleanly in spring.
Turn Down the Water Heater
Most heaters arrive set at 140 degrees, but the Energy Department recommends 120 degrees, which cuts water-heating costs by 6 to 10 percent. The medium setting on a gas dial is usually about right, and 120 is still plenty hot for showers.
Set Back the Thermostat
Lowering the thermostat a few degrees while you sleep or are away saves noticeably, energy auditors say. A programmable thermostat handles the schedule so the house is warm when you return.
Sources: U.S. Department of Energy, Energy Star