Is this a decent programmable thermostat?
I want to use it to control three furnaces -
A waste oil furnace that is almost free to operate for stage one
and then wire two natural gas furnaces to stage two.

Just for kicks, I want to hook up the fan in the gas furnaces and the economizers for hot weather. Dont really care if that part doesn't work, just one of those "oh it would be cool" things.

Right now, each furnace is controlled by a seperate mechanical thermostat, and the economizers are controlled by a low-voltage toggle switch on the wall.

I know no one can tell me HOW to do this because of the DIY rule, but I'm really curious about if this particular thermostat has a good or a bad reputation.