... It’s not magic, just a smart use of the laws of physics
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Heat pumps are becoming all the rage around a world that has to slash carbon emissions rapidly while cutting energy costs. In buildings, they replace space heating and water heating – and provide cooling as a bonus.
A heat pump extracts heat from outside, concentrates it (using an electric compressor) to raise the temperature, and pumps the heat to where it is needed. Indeed, millions of Australian homes already have heat pumps in the form of refrigerators and reverse-cycle air conditioners bought for cooling. They can heat as well, and save a lot of money compared with other forms of heating!
Even before the restrictions on Russian gas supply, many European countries were rolling out heat pumps – even in cold climates. Now, government policies are accelerating change. The United States, which has had very cheap gas in recent years, has joined... continue reading
