I have a Fourwinds 33sw with the residential fridge. I'm in Oregon, so it's not near as hot outside as say the southwest. That said I have been satisfied with the performance of the residential fridge. I've tested it out, and I've been able to be with out shore power for over well over 48hrs on good house batteries, without the diesel gen set needing to auto starting due to low amp/volts. I'm guessing this might change with poor quality house batteries or much higher ambient temps. I don't like it cold inside the rv, so I pretty much keep the coach 70 inside at all times. As a whole the residential fridge has a lot more space than any previous rv duel/triple power rv fridge, and residential fridges are designed to be on 24/7 year in and out and they aren't as much susceptible to being out of level as much as rv fridges running on gas. Again just my experience, and haven't found a reason to regret my purchase.