Buildings in the U.S. are turning to ice batteries for air conditioning — a technology that freezes water into ice at night when electricity is cheap and lets it thaw during the day to cool indoor ...

The weather may say fall, but your AC is still working overtime. We’ll show you how a few thermostat tweaks and simple habits can make a big difference in what you pay.

Winter might still be a few calendar pages away, but early fall is prime time to give your heating system the TLC it needs. Once the first cold snap hits, HVAC pros start booking up fast. Acting now ...

Engine air filters are essential components for most vehicles. However, they don't last forever. Here's how to know if you should clean or replace yours.