• Well the whole point of a heat pump is that they have a COP (coefficient of performance) of about 2-4. Meaning that for every unit of energy u put in they have an effective heating/cooling capacity of 2-4 units of energy. They have an effective efficient of greater than 100% whereas a gas can only every reach a max of 100%.

    • @AA5B@lemmy.world
      link
      fedilink
      24 days ago

      At ideal conditions. As the temperature difference is greater, the efficiency goes down. So right when you need heat the most, gas is still at 90+% efficiency while heat pumps are closer to or under 200%.

      Then you have to look at capacity. It can be expensive sizing for the greater temp differences when it usually isn’t. If you have a heat pump that can be 400% efficient, do you really want to pay for quadruple the capacity so that even when it’s at 100% efficiency it still puts out enough heat? No one can afford that