Those ominous HVAC noises can be an indicator of more significant issues, so pay attention to them. Here are some sounds an air conditioner can make and what they might mean.

Anticipating replacement of an air conditioner allows you to decide what type of unit you want, if the ductwork needs to be replaced, and probing into sales and rebates provided by various companies.

A sleeper has zero memory of the hours he was asleep, during which the HVAC quietly surrounds him in unappreciated comfort.