On Apr 30, 11:01 pm, "Edwin Pawlowski" wrote:
"B A R R Y" wrote in message



What if it takes my compressor a week or two to drain down, so there's a
sizable change I might use the energy? If I have half left, I use half as
much enegery refilling the tank.

But does it take more energy to fill the second half than the first half?

Yes