Hello,
I have a Frick screw compressor. We are running the freezer at -10°F and we are trying to figure out how much it would cost our customer to run the freezer at -20°F. Any ideas without having to physically run the system and check amp draw at the compressor motor? Any formulas I can use to figure it out? I have the coolware software from Frick if that helps at all.

Thank you.