Forum Discussion
pianotuna
Jan 08, 2015Nomad III
Hi,
Replace the cold air return grill with dual window fans. That will push warm cabin air into the cavities and thaw out the lines. I operate mine from a mechanical thermostat kept near the water lines.
In my case, it has the happy effect of pushing a bit of air through the furnace duct work, too.

Replace the cold air return grill with dual window fans. That will push warm cabin air into the cavities and thaw out the lines. I operate mine from a mechanical thermostat kept near the water lines.
In my case, it has the happy effect of pushing a bit of air through the furnace duct work, too.

About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,179 PostsLatest Activity: Jan 13, 2026