I just got my latest bill and it jumped almost a $100 to $220 this cycle! I realized that my bill is a couple months behind and it was when I had my 72 and 180 running at the same time. I believe most of the $$ went to heating both tanks and the basement
sump (1000w). Once again, I have employed the Kill-a-Watt to tell me where my money is going.
xtmreef,
I would plug the KaW into your heater and just let it go for several days. You can then get an average and do the math to figure out what your heater or chiller cost you. I have a spreadsheet that does the math for you if it would help.
