I have a 2018 Kodiak Cub. It has the pretty sticker next to the entry door just like yours. It was advertised as "All Season".
Pipes routed through the underbelly froze in less than 4 hours when temperature dropped to 28 degrees F. The furnace was running and set to 65 degrees. Holding tanks did not freeze in four hours.
Apparently the temperature under the bedside table also got below freezing because the water pump located there cracked.
Keystone handles warranty for Kodiak models. They refused my claim. They said always winterize before temperature drops below 32 degrees F. The manual said the same. Freeze damage is specifically excluded in the warranty.
I spent 3 years of part time work and about $3000 making it "All Season".
1) Seal the frame to the floor and the belly cover to the frame.
2) Improve heat from propane furnace to the plumbing space under the floor.
3) Insulate the steel wheel wells near the water pump.
4) Insulate under the belly tanks and around the belly plumbing space.
5) Closing the space between the storage bay and the water heater. There were panels there, but large open spaces existed above panels.
6) Insulating the dump pipes and valves.
I have successfully camped in 15 degree F weather for extended periods. Until you modify it and test it, I recommend you winterize when temp may be below freezing.
Carry RV antifreeze with you when you travel. It takes less than 20 minutes to stop and pump in the antifreeze once you know how.
I carry water in 4 gallon water tanks for drinking, washing, and cooking when I can't be sure the furnace will be running. Yours may freeze even if the furnace is running.
Other people with large Dutchmen TT's and 5th wheeler's have said they get by in 20 degree weather for short periods. Do you feel lucky?
I wish you good luck and happy trails ahead!
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