Residential fridges work fine in RVs but keep in mind that in order to work while driving, you will need a large enough inverter and enough batteries to do the job until you hook up (for pull behinds). Motorhomes are better suited as they can more easily keep the batteries charged. Another assumption here is that the motorhome is newer with a big enough alternator to keep up (new Ford F53 chassis come with 175 amp alternator because of this). Putting in a residential fridge and humongous inverter and larger battery bank can overheat (and toast) an older rig's charging system. Residential fridges can be very workable..just remember it's not just the fridge..it's the entire system. Having been an RVer for 40+ years, I've gotten attached to the absorption refrigerators as, with proper maintenance, they are pretty much the most durable system you can have for refrigeration. Keep the coils clean and if you live in a high humidity area, just keep it plugged in as your beer cooler to keep the coils hot (and dry) to minimize rust damage.