What's the difference between warm air and cool air? In fact, what does “temperature” even mean? It's stranger than you think. At a basic level, if you increase the temperature of air, you increase ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Thom Dunn Thom Dunn is a writer focusing on home heating and cooling. He once ...

Germany-based heating specialist Viessmann has presented two new air-to-water heat pump series for residential applications. “The new heat pump families Vitocal 250 and Vitocal 150 make it easy for ...