Insulating under bed in 171

 Sounds feasible.  Do you have a memory foam mattress?  We do, I sleep against the back wall in our 171 and haven't noticed any difference, I can only wonder if that mattress helps.  Something that may help you is to leave the access door under the bed open overnight to allow warmer air to circulate under there. 

I have also thought about this but not because of the cold in the spring, it's the heat in the summer when we camp. What I did do was insulate the short walls behind the refrig because of the heat that radiates from them on the inside. There is only the thin paneling and nothing else to keep the heat out. It has made a big difference. Goose

Originally posted by techntrek  Sounds feasible.  Do you have a memory foam mattress?  We do, I sleep against the back wall in our 171 and haven't noticed any difference, I can only wonder if that mattress helps.  Something that may help you is to leave the access door under the bed open overnight to allow warmer air to circulate under there.

I would recommend picking up a roll of mylar/mirror/bubble wrap.  It is usually available in the building section of the big box stores.  It looks like bubble wrap but the plastic is coated with a mirror-like surface.  The bubbles act as thermal insulation and the mirrored surface reflects heat.
So it works great to keep hot sunlight out and reflects IR heat in the interior.  I cut it to fit the shape of my Pod's windows and use the blinds/curtains to keep it from falling out of the window frames.
I finally added a couple of industrial strength sticky-back Velcro to each sheet to help keep the panels from falling down.
The bubble sheets really work well...they stop most of the condensation/frost when nights get nippy.  My bed is located beneath the rear window and there is never any cold drafts when the sheets are installed.
I also use the inserts on the sunny side windows if I know that it is going to be a scorcher and I want to prevent the temp from building up too fast from sun shining through the windows.

I've noticed cold air getting sucked into the 171 between the plywood for the bed and the back wall which leads down to the storage area.   Make sure the storage doors are closed and consider a bead of silicone between the wall and plywood. You can add insulation after the airflow is stopped. I'm going to try this as well.