My '74 Argosy motorhome has its original Dometic fridge - model RM66, I think. It cools okay initially but in warm weather won't hold the cold temperature. On a relatively warm weekend (80-90 degrees) I'm lucky if it stays below 50 degrees inside, and that's with the flame burning high most of the time. The gasket looks fine, and I replaced the missing freezer door long ago. Performance is about the same on gas or AC.
Is it safe to assume that my Dometic has permanently lost some of its cooling efficiency? If so, what caused the loss? Will a new gas absorption fridge be noticeably better at maintaining its cool? Should I expect a new fridge to hold 40 degrees or below in 90+ weather for several days?
I'm trying to decide between a new Dometic and a DC compressor model like the ones from Tundra (
www.tundra.cc). With 245 A-H of house batteries, 3 amps for the Tundra isn't a big deal. It'd be worth it, too, if it'll stay cool in really warm weather.
Bob McKeown
Nashville
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