Originally Posted by Danny Bell
I have an old Armstrong unit (that works great) in my 1966
Ambassador. Should I run it a little during the winter ? Is there any advantage or disadvantage to this ? Is there a potential to freeze something up ? I live in a cold (winter) climate.
It's already 48 years old. If you've never run it in winter before, why start now? Empirical evidence should prove that it's not required.
But if you do decide to run it briefly, wait until the temperatuee is warm enough for the thermostat to actually let it come on. Trying to run it in temperatures lower than the thermostat will go would be pointless. And because of the thermostat, there's no chance you'll freeze it up, because it simply won't run when it's that cold.