Our 4 door Norcold had a cooked cooling unit when we purchased the rig 4 years ago. I purchased an amish cooling unit, 1200.00 shipped to my doorstep. Deb, my wife and I pulled the fridge and laid it face down on the kitchen floor. We have a full wall slide so we had plenty of room. Swapped it out w/o issue and its been running strong since.
Did have the rear fans quit anf the fridge warmed up to 45 BUT freezer stayed frozen. Replaced the fans and back to normal.
We are now in New England and the fridge is dropping to 30 deg and lower when we have the temp set to 5!
I noticed the place where we purchased our cooling unit now sells Helium cooling units. Not sure what the advantages of the Helium units are, perhaps someone can jump in with the answer.
Two things to watch out for when installing a cooling unit.
Make absolutely sure the cavity the cooling unit was in is clean and the new cooling unit fits solidly and is air tight.
Also make SURE the installer installs quality/new fan(s) in the rear and the fans blow the air UP.
I pulled a 2 door Norcold that was cooling poorly only to find the fan was installed blowing the air down!
