Ah, okay. Seems like all the rigs have furnaces tho. I guess I don't see why they even have heat strips? My for sale Allegro has a Coleman roof a/c that you can switch to blow out heat. It works pretty good if I'm hooked up to shore power and don't want to run my propane furnace.
'03 Freightliner FL112, 295" wheel base, with '03 United Specialties 26' living quarters, single screw, Cat C12 430 h/p 1650 torque, Eaton 10speed , 3.42 rear axle ratio