"It is helping us save money because it’s more efficient, got the gas out of our house, and has worked like a charm." Startup ...

There are a variety of brands to choose from, including Cala 's smart heat pump water heaters. They allow you to tailor your ...

Many people around the world don't have easy access to hot water. But an engineer in Scotland has designed a simple portable device that heats water using just the power of the Sun. He believes it ...