Brionna is a writer specializing in home improvement, construction, and real estate topics. She leverages her background as a civil engineer and interior decorator as well as her love for ...

It's always in the middle of a heatwave. Your AC hums to life, but instead of the icy rush you're craving, it pushes out a faint, lukewarm breeze. That's when the dread sets in. Is the unit failing?

- Nancy T., Cowan Heights, Calif. Dear Nancy: In checking with top-rated HVAC technicians, our team heard an interesting approach to this conundrum that one expert calls the $5,000 rule. Here's how it ...