Many people just dump the furnace under the fridge, especially in coaches that have two of them plus heat pumps. The furnace under the fridge in our rig is for the rear zone and about the only reason we ever turn it on is to give it some exercise. Still, I did not want to get rid of it, mostly as a resale consideration. We didn't think we needed a huge fridge anyway, so upgrading from 12 cu ft (Norcold 1200) to a 14.6 GE was enough of an increase for us.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL