Well, I can see your point that plugging holes might be more cost-effective, but I still think I should go solar immediately since the return is (+) and there would be no cost to me. Ideally, I would do both immediately!
But to answer your questions, we pay 8c/kWh, net metering reimburses at 9c/kWh. The AC is a Goodman (15 SEER) and the furnace is an older Payne that I don't see a model number on.
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