I live in Tennessee. I have a Tappen duel fuel. The outside thermostat is currently set towards the high range. Now that propane costs are much higher and electric is about the same as it was last year, I would like to adjust the outside thermostat to use the propane only when it is colder out.
The outside thermostat was set about 37 [factory setting?], I believe. Could or should it be lowered to, say 34?
Can this be done without fear of messing up anything?