As our HVAC experts explain, leaky or open attic doors could be allowing warm air into your space, forcing your air conditioner to work harder, driving up your energy bills, and reducing the lifespan ...

If the attic hatch is located above a conditioned space, check to see if it is at least as heavily insulated as the attic, is weather-stripped, and closes tightly.

In five years of research, we’ve put hundreds of hours of work into finding the best tools to help you keep cool. Here are the products and methods we recommend.