I have an all electric house, and my bill this time last year was no more than $90 for everything. This month it is $190.00. In June we did get a Spa2Go, which runs 24 hrs. a day- our bill went to $146.00. On July 25, we got central a/c installed, and now we have the $190 bill. Do you thinks it's the spa & air combined to give such a high bill, or a meter problem? The spa people say it's only the equivalent of a 75 watt light bulb; and another place say they cost $5-8 monthly to operate. I'm confused!!