Wintering in a Class A Motorhome

ditto on covering the front wind shield. I would guess a 20% heat savings and no condensation running down the inside of the window on to the dash. I used bubble wrap. Used my wind shield see through cover which covers both side windows and the front to cut out the same shape. Then put it in place, held by wipers until not needed, then put my sun screen over that and secured it with the existing hardware.

Although it was considerably darker inside, the benefits permitted electric heat (on 30 amps) to keep the place comfortable.

I also cut out 1 inch foam board for the back windows and just friction fit and sealed with tape.

That mh did not have insulated windows.