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I did not change anything the first year, just left the back area open to outside air though the original fridge vents. No real issues.
After talking with some RV reps at the Tampa show last year and noticing most all units with factory residential fridges installed have no outside vents at all, just open around the inside in some way to allow inside air to circulate. Most of the larger fridges even have a fan on the rear to draw the air. Our fridge does not have a fan.
These fridges are designed to run at room temps. So exposing the rear area to outside temps from sub zero to plus 90 is really not great.
So, I closed off the rear vent areas (we have two) with solid foam insulation and sealed the edges with spray foam then installed the vent covers. Leaving the sides, top and bottom of the fridge open for air flow.
I added 5 ea 2" holes in the top of the trim valance (which is not seen from floor level) and also made several holes inside of drawer cupboard beside the draws to allow air to enter from there. Hidden as its in the drawer area.
With this, the air drawn from inside the cupboard area under the slide in front and through the holes in the side and in the rear past the fridge by convection and out through the top front.
I did notice a change in temps being more stable and no fluctuation with outside temps. Even though before they were not an issue. I thought this would be better.
Bill
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