It's a bit weird to say we're running out of He, not unless we're running out of CH4. Which, theoretically we are. But practically, with CH4, our modern concern is not running out of it, but the associated GHG emissions…
"but a heat pump requires a big unit placed outside the home that makes noise." Old ones maybe. We've installed a Mitsubishi mini-split that can heat a 1900 sq ft. mediocrely insulated home in Appalachia (this morning…
It's a bit weird to say we're running out of He, not unless we're running out of CH4. Which, theoretically we are. But practically, with CH4, our modern concern is not running out of it, but the associated GHG emissions…
"but a heat pump requires a big unit placed outside the home that makes noise." Old ones maybe. We've installed a Mitsubishi mini-split that can heat a 1900 sq ft. mediocrely insulated home in Appalachia (this morning…