Hypervent and sweating?

[Defenestrator]

That Gurin dehumidifier looks similar to the (different-branded) one I have. I had some luck opening it up and cleaning all the crud/lint out of the fins, then putting tape along the sides of the intake vent so all the incoming air is forced through the cold-side heatsink instead of going around it. It's still not particularly effective, but I'd say it started pulling about 50% more water out of the air.

Basically all the thermoelectric dehumidifiers like that one kind of suck, but the alternative is to jump to a compressor-based one that's loud and 4-5x the size.

I definitely get a lot of condensation around the bed and behind the dinette cushions when temperatures drop below 30 or so. The window frames also start to accumulate condensation when it gets really cold. I have hypervent underneath, but it doesn't extend up around the sides. I'm quite curious as to whether having some around the sides as well is helpful.

Mostly, I just wipe up the moisture once a day when it's really cold outside, and make sure to ventilate now and then to keep overall humidity down.

[Dougandlori]

Jake390
Which park are you in off San Joaquin road
Ill be at desert trails Monday the 14th
Great location

[Jake930]

Originally Posted by Dougandlori

Jake390
Which park are you in off San Joaquin road
Ill be at desert trails Monday the 14th
Great location

Hi dougandlori, we are at Desert Trails. Site 41. Will look forward to meeting you. How long will you be here?

[Catchlight]

We had condensation on the interior of the wall beside the bed in our Escape 21' when camping in cold weather and using the furnace. We managed it by opening the bathroom window and running the Maxx fan on low. Three years ago I added Hypervent to the sides and bottom of the mattress as insurance against condensation.

It helps that we like the trailer temperature to be pretty low when we're sleeping. The bigger the inside/outside temperature differential, the more condensation.

I also like having the ventilation under and beside the mattress during winter storage, when we run a portable baseboard-type heater with a thermostat and a Dyson oscillating fan full time with all windows and vents closed. Typically that keeps the interior at about 12C and 60% humidity.

[CarlNH]

Originally Posted by Defenestrator

I have hypervent underneath, but it doesn't extend up around the sides. I'm quite curious as to whether having some around the sides as well is helpful.
.

Hypervent along the sides definitely helps a lot. I had it under the mattress but still got moisture along the edges of the mattress in cold weather. Putting hypervent around the sides of the mattress and about 2 inches above it eliminated the moisture there.