Martha Stewart on MSN

8 AC mistakes that can make your home hotter—and how to avoid them

Keep your home cool during extreme heat by avoiding these mistakes.

Do this before the heat wave hits - and slash your cooling costs by $100 this summer

That can add up to more than $100 in savings, with average summer electricity costs projected at $792, but Wolfe said it is largely dependent on how degraded the AC is. He estimates potential savings ...