Oxford study proves heat pumps triumph over fossil fuels in the cold::Published Monday in the scientific journal Joule, the research found that heat pumps are two to three times more efficient than their oil and gas counterparts, specifically in temperatures ranging from 10 C to -20 C.

  • @UFO64
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    41 year ago

    Provided the pressure is maintained from the outside, mine would work fine with a match.

    • @coffeebiscuit
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      31 year ago

      Mine had a safety valve, which was unfortunately electronically controlled.