Inspector507
Super Member
A company called Phillips & Temro distribute lower hose heaters in 5 sizes from 1" to 2" hose size. They are available from NAPA auto parts here in Ohio. They might also be branded ZEROSTART.Do a little more searching. Years ago, I remember seeing a block type heater that was inserted into the radiator hose by cutting the hose and clamping the heater portion in place of the portion of hose you had to remove.