In order to meet its climate goals, America needs to replace 2.4 million fossil fuel furnaces every year for the next 27 years.

I’ll note that this post is paywalled, but the key facts are outside the paywall.

  • schroedingershat@lemmy.world
    2·
    1 year ago

    It’s a really bad piece of jargon, but is an internally consistent definition. They mean (heat entering building)/(work consumed) > 1

    Which is a way if defining efficiency (energy out / energy in), just a really awful and misleading one.

    In terms of % of carnot efficiency, the best heat pumps are about where stationary heat engines generally are, 40% or so.