What Minimum Temperature?

[CarlC451]

The Suburban, dual level furnace in our new-to-us 2012 Adventurer 37F, has been waiting for a circuit board since Thanksgiving. A small space heater is keeping internal temp in the 40s most nights ... but ... I am afraid to dewinterize ... and I need to.
1. With overnights in the 20s, what is the minimum, FREEZE-SAFE temp for the inside? (Factory will give no answer).

[creativepart]

Originally Posted by CarlC451

1. With overnights in the 20s, what is the minimum, FREEZE-SAFE temp for the inside? (Factory will give no answer).

There isn’t “one”…there are too many variables.

Mostly it depends on the temps the following day after a freezing night. If the next day is 33 that’s a bigger risk than if the next day is 45.

A large thermal mass like an RV doesn’t cool down quickly but it also doesn’t heat up quickly.

Why the wait for the CB? They seem to be available at many places and cost less than $100. Is some dealer service shop giving you the runaround?

https://suburbanrvparts.com/suburban...w-fan-control/

[Morich]

One of the reasons nobody will give you a solid number is the way weather works. As mentioned, how warm it gets in the day factorsa into how long or how cold it can stand overnight, but than several other things matter a whole bunch, like the wind, which direction the Rv is facing and what is there to block any wind, are a few. Even small things like how the Rv is filled to eitehr add to the heat retension or block the heat from getting to the space where the pipes run. Just no good firm answer.

So how are you set for adding heat until getting the furnace fixed? Can you add heat from light bulbs as they can be put in the spaces where most likely to freeze.

What are the odds of letting the water drip as that brings fresh warmer water out of the ground. It's the Texas answer but not one I recommend for most cases if I can avoid it.
It's part of why Austin nearly ran out of water not too long back. If you drip a 100,000 faucets it does draw down the lake sooner!

What drives the need to dewinterize? Are you currently using the RV? Looking at the plans for your, you do seem to have lots of plumbing on the outside walls where things get cold quicker.

[jerichorick]

Originally Posted by CarlC451

The Suburban, dual level furnace in our new-to-us 2012 Adventurer 37F, has been waiting for a circuit board since Thanksgiving. A small space heater is keeping internal temp in the 40s most nights ... but ... I am afraid to dewinterize ... and I need to.
1. With overnights in the 20s, what is the minimum, FREEZE-SAFE temp for the inside? (Factory will give no answer).

One of the jobs of the gas furnace is to heat the basement to keep the plumbing from freezing. I let a faucet drip at a fast pace. The movement of the water in the hose and pipes keeps things from freezing.
About the board. https://www.dinosaurelectronics.com/ Check here. They should have it.