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

https://cesarrufv010.wpsuo.com/why-old-attic-insulation-ruins-your-indoor-air-quality

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.