
Slouching Raymond
Well-known member
I haven't read every post in this old thread, but as a one time caravaner, I know the answer is 'Absorbtion Fridges'
en.wikipedia.org
I was surprised how quiet they are when sleeping in close proximity to them for 6 years.

Absorption refrigerator - Wikipedia
I was surprised how quiet they are when sleeping in close proximity to them for 6 years.