
If cool air is leaking out of gaps in your attic, then the AC has to work harder, resulting in a higher energy bill. But HVAC pros have revealed a simple trick for better insulation as the weather continues to warm up: Weatherstripping your attic hatch.
This $7 Topiverse Weather Stripping Door Seal at Amazon is all you need to shave 15% off your cooling (and heating) costs year-round. It's a simple application that even inexperienced DIYers will be able to achieve at home, in minutes.