Every dollar you spend on energy should either heat your home, cool your home, or power your life. If it's disappearing into cracks, attics, or standby modes, you're paying for waste. This guide covers every category of home energy loss — with direct links to our detailed fix-it guides.
Air infiltration is the #1 source of energy waste in most homes. Cold air enters through gaps, cracks, and poorly sealed openings — and your heated air escapes the same way.
A 1/8-inch gap under a standard door = a 3×4 inch hole in your wall. Open 24/7.
Single-pane windows are R-1. Even double-pane only reaches R-3. Your walls are R-13+.
Hot air rises. If your attic isn't sealed and insulated, you're heating the outdoors all winter.
Your ducts run through attics, crawl spaces, and walls. ENERGY STAR estimates a typical duct system loses 20 to 30 percent of the air it moves to leaks, holes and poor connections.
Most duct leaks happen at connections, not in straight runs. You need a simple test.
DIY mastic + mesh seals accessible joints. Aeroseal handles the rest from inside.
Your water heater runs all day, every day. It's typically the #2 energy expense in a home (after HVAC).
Lower the temp, insulate pipes, fix sediment. DOE says water heating is about 18% of home energy use.
Heat water when rates are cheap. Use off-peak scheduling.
Devices that are "off" still draw power. A typical home has 20+ phantom loads running 24/7.
The TV stack and desk are usually the biggest standby loads; measure them.
Each smart speaker draws 2–5W continuously. Multiply by 10–20 devices.
If your utility charges more during peak hours (4pm–9pm), storage lets you buy cheap and use it expensive.
Tesla Powerwall, Enphase IQ. Store off-peak or solar for peak hours.
Make ice or heat water at night. Use it during the day. Zero electronics needed.
Energy costs vary 5× by state. See where yours ranks and what fixes matter most.
Don't start with expensive upgrades. Follow this sequence, cheapest and most certain first:
Take the Quick Quiz, compare our recovery kits, or use the free printable checklist.
Quick Quiz