Small fixes that add up to real savings — most under $50, none requiring a contractor.
Heating is the single biggest energy cost in most homes. The good news: you don't need a new furnace to bring that number down. These seven fixes are backed by Department of Energy estimates, cost little or nothing, and you can knock most of them out in a weekend.
Warm air escapes through gaps around doors, windows, outlets, and baseboards. Weatherstripping and caulk cost under $30 and take an afternoon. Check corners, attic hatches, and anywhere two building materials meet.
The Department of Energy puts this at roughly 1% saved per degree, for 8 hours a day. A $25 programmable thermostat automates it so you're not relying on willpower at 11pm.
Many units ship set at 140°F. Water heating is nearly 20% of home energy use — dropping to 120°F cuts standby losses without any noticeable difference in your shower.
Flip the switch at the base so blades spin clockwise in winter. This pushes warm air trapped near the ceiling back down into the room instead of wasting it overhead.
Open curtains on south-facing windows during the day to let in free heat. Close them the moment the sun goes down — glass loses heat fast once daylight's gone.
Every room your HVAC doesn't need to heat is money saved. Shut the door on the guest room or home office you're not sitting in today.
This one has an upfront cost, but heat rises — an under-insulated attic is often the single biggest leak in the house. Pairing insulation with air sealing gets you the full 15–20% the DOE cites, versus insulation alone.
New insulation, windows, or an HVAC replacement cost more upfront — but they compound the savings above for decades. Most homeowners fund projects like this through the equity already sitting in their home rather than a high-interest card.
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