Why your AC isn't cooling: The most common causes and fixes

Is your AC blowing warm air? Before calling a pro, check your filter, thermostat, and outdoor unit for issues.
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Is a window unit or portable AC better for your place? HVAC pros explain the pros and cons

Key PointsWindow AC units cool faster, use less energy, and are more cost-effective for long-term use.Portable AC units offer ...
Money on MSN

7 common AC problems that can drive up your summer electric bill

If your electric bill is spiking ahead of scorching summer temperatures, the heat might not be the only thing to blame. While ...

Should You Turn a Window Unit AC Off When You're Not in the Room or Keep it Running? We Asked AC Pros

Here's when HVAC pros suggest turning off your window AC unit so you can save money while you're away from home without wasting energy cooling the space upon your return.