Yes and no.Is it safe to say that there is no free ride or such a thing as super efficient leccy heaters and that 3kw in is the same as 3kw out no matter how you look at it ?
Bob
With heat pumps you can in theory get 3kw out for 1kw in as it gets the extra energy from the air or ground.. But depends on weather. The colder it is outside the worse it gets. As you tend to use heating when it is cold the efficiency drops off massively.