Bar fridge in storage compartment of a gasser????

I haven't done so but I would have no qualms about putting a dorm fridge in a basement compartment. Yes, it will not like the poor air circulation but that doesn't stop coach builders from locating other sensitive componentry in the basement. Frankly for as little as they cost they can be bought at a big box store for not much more than a cooler. You could also look at ways to alleviate heat build up in the compartment which would help a bunch.