| ▲ | tenthirtyam a day ago | |
Oh! You're right, I hadn't realized. But... wouldn't it be more efficient with a heat pump and exploit the 2-4x COP? Ok, maybe I get it now: heat pump wouldn't work at the high temps they are achieving. Thx. | ||
| ▲ | pfdietz a day ago | parent [-] | |
Why are you optimizing for efficiency rather than overall cost? | ||