Forum Discussion
Gale_Hawkins
Oct 03, 2013Explorer
After 24 hours a really healthy frig in 90F air temps during the heat of the day can see upper/lower box temps of Zero/28F early in the mornings with air temps of 70F when set on high.
In our 1992 Norcold 6162 frig if on high we are at -5/25F in the morning with outside temp of 70 and it hits 100F in the MH that afternoon we can bet the boxes will be at +5/35F with our replaced cooling unit.
Every 3F rise in air temps for us equals 1F rise in the temps of each box. The 30F spread between boxes seems to be set in stone in our case. There must be a dozen old posts with detailed testing data done over and over under different conditions.
In our 1992 Norcold 6162 frig if on high we are at -5/25F in the morning with outside temp of 70 and it hits 100F in the MH that afternoon we can bet the boxes will be at +5/35F with our replaced cooling unit.
Every 3F rise in air temps for us equals 1F rise in the temps of each box. The 30F spread between boxes seems to be set in stone in our case. There must be a dozen old posts with detailed testing data done over and over under different conditions.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,369 PostsLatest Activity: Mar 12, 2026