[pgfpro]

Thanks a ton Frank, great info!!! Much appreciated!!!

My Wednesday route is around 280 miles that day. My Thursday route is around 150 miles a day. The rest of the week I would not use the water heater because there only around 75 miles a day.
EDIT: Its all Rural my average speed is 50 mph. Very little stopping.

I hope I didn't miss-lead anyone here. The coldest it usually gets during the winter is -10* F. and only maybe 5 days a year. So I would say our average winter temps are around 39*F

Your right about the house adding heat to the garage now. I have shot it with an infra red gun and the joining wall is always around 5 degrees warmer. Plus the gas water heater has around 72* temps at its base. The furnace also has around 68* temps when its running.