If the nat gas is cheap, that would be my choice. And, it's great for cooking!
My advice is to monitor your basement temperatures this month.
If it stays below 45F for long periods, maybe you should go with gas.
It was cold in the basement last night, but tonight isn't so bad.
That's the walls beside the A7. The floor (slab) is about 45F right now.
Haven't heard it running lately, because we haven't been using much hot water today. Light dish-washing mostly.
So far, the A7 is working okay. But, I have not had the power monitor on it lately.
So, I'm not sure how much extra it's using to during this cold period.
Maybe I'll set that up this weekend. Should have done a few days ago..
The forecast is for warmer weather in the coming weeks.
The side of the basement where the A7 is installed has no insulation in the overhead.
It makes up about 40% of the basements floor space. 60% is a finished rec room.
It's 29.1°F outside right now, but 24 hours ago, it was pretty chilly!
Check out my post about the Sanyos in cold weather.. They worked great!
http://ecorenovator.org/forum/billia...html#post26970