Want to guarantee efficiency, lower energy costs, and a prolonged lifespan of a heat pump system? The key is regular ...

These water heaters are far more energy-efficient than conventional options. We put 10 models to the test.By Yasmeen KhanHeat ...

Using a heat pump can be one of the most efficient ways to cool and heat your house. In cooling mode, it works like an air conditioner, extracting heat from the air inside and releasing it outside.

Researchers in Italy have designed a novel carbon dioxide heat pump that can work with photovoltaic-thermal energy, a finned coil heat exchanger and a U-tube borehole heat exchanger. Their experiment ...