Heating water is one of the most energy-consuming and costly household tasks. According to the Department of Energy, it makes up roughly 18% of a standard home's monthly energy budget. And if you use ...

Researchers in Malaysia designed a photovoltaic-thermal system that can be used in solar drying, space heating, rooftop systems, and off-grid thermal applications. It relies on a double-pass cooling ...

In our tests of space heaters, we’ve found several models that work well—even adding a bit of style—all for less than $100. More than style and cost, though, safety is a determining factor in buying a ...

Add Yahoo as a preferred source to see more of our stories on Google. vornado space heater next to couch If you like your room warm and cozy, one of the best investments you can make is in a space ...