Heat Pumps Are An Essential Wedge But Have A Hidden Downside To Fix
<p>For many more northern cities, air conditioning used to be an option. With increasing heat waves due to global warming, it isn’t. Heat pumps provide both air conditioning and replace heating with natural gas, and the heat is cheaper in most places because one unit of electricity moves three units of heat from outside to inside. That’s a win-win from a climate perspective, surely? Well, it’s more complex than that.</p>
<p>Decades ago, the nations of the world agreed that the hole in the ozone layer was worth fixing. The problem was chlorofluorocarbons, the most commonly used chemical in refrigerators, air conditioners and aerosol cans.</p>
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