The fridge would actually have to work harder though, to maintain a larger temperature difference between its hot and cold sides. So it’ll likely use more energy than the way fridges normally work.
I think their idea is to still use the chill air from the room for cooling the heat exchanger of the fridge, but transporting the then hotter air outside of the house (like a proper kitchen hood does) instead of keeping it in the kitchen.
I think though that if it’s hot out, that would increase your cooling demand - moving warm air out of the fridge means pulling that same amount of air in, from outside (potentially higher temperature than the fridge exhaust). So in that case it is probably disadvantageous.
I think their idea is to still use the chill air from the room for cooling the heat exchanger of the fridge, but transporting the then hotter air outside of the house (like a proper kitchen hood does) instead of keeping it in the kitchen.
I think though that if it’s hot out, that would increase your cooling demand - moving warm air out of the fridge means pulling that same amount of air in, from outside (potentially higher temperature than the fridge exhaust). So in that case it is probably disadvantageous.