I have a diesel pusher. Last summer, my Norcold RV fridge died. I had always wondered about going resi fridge, but now my hand got forced. Of course it went out at the worst time, and we needed a fridge. The RV replacements are stupid ridiculous priced (I had a 12 cu ft 4 door model), like $4500. I knew about the Samsung RF18 fitment and found one within a couple hour drive, so off I went to get it. We got it installed, and it works great! it is 18 cu ft, vs my old 12 cu ft. Everything about it is better!! Contents stay cold even when 120* outside, which was always a problem before. I've had 5 bags of ice in the freezer with food in there too!
All this while in the back of my head, I was worried about dry camping at Glamis. We only made a couple trips last season because of vacating Commiefornia, but I was pleasantly shocked at how well it works! I do not have solar at all (I figured I would add if needed). I leave my 2000 watt inverter on 24 hrs a day in the dunes and I have 4 6V Trojan batteries, nothing exotic or outrageous. I run the gen for 1-2 hours in the AM while cooking and eating breakfast, and the same in the evening at dinner time so total of 2-4 hours a day. We watch TV, plug our phones in, everything we want with 120v power (not excessive though). I have 2 heaters in the coach, and use them during the night long as needed (don't set real hot, maybe 68-70). My battery voltage is typically not below 12.2 in the AM when I wake up. Mornings are the worst because of watching TV at night (40" TV, surround sound, everything running), and everything charging all night and the heaters running. I will not ever go back to RV fridges again!!