Drafty attics can raise Escondido energy bills because air leaks weaken the barrier between attic

https://waylonhaay445.cavandoragh.org/why-san-diego-rats-invade-attics-in-the-summer

Drafty attics can raise Escondido energy bills because air leaks weaken the barrier between attic and living space; sealing and insulating help reduce heating and cooling costs.