A friend of mine told me that when I plug in the block heater at night, plug it into a timer that is set to come on just a couple of hours before you leave in the morning, this way it is not using electricity all night when you don't really need it. My question is, what size timer should I use? I looked at timers tonight and wasn't sure what amp timer I should get. They had timers that are rated at 15 amps, but didn't have a grounded plug on them. There was an outdoor heavy duty timer, but was only rated at 10 amps. How many amps do I need? I couldn't find it in the owner's manual. Any help would be appreciated.

