Yes, because they move heat instead of creating it by burning stuff. This lets them be more than 100% efficient. You can expect something like 300% efficiency averaged over a year for air-sourced heat pumps in the US which are sized correctly for the house they’re in. This makes them a net benefit, even on the current electrical grid.
People also often choose to add insulation when installing heat pumps, as this has the benefit of lowering overall system cost, which makes the situation even better.
Yes, because they move heat instead of creating it by burning stuff. This lets them be more than 100% efficient. You can expect something like 300% efficiency averaged over a year for air-sourced heat pumps in the US which are sized correctly for the house they’re in. This makes them a net benefit, even on the current electrical grid.
People also often choose to add insulation when installing heat pumps, as this has the benefit of lowering overall system cost, which makes the situation even better.