In the summer the warm exhaust from the fridge gets dumped into the kitchen along with heat from cooking. Then the cooling system has to work harder, or if there is no cooling system it just means less comfort and fans running more.
So I have to ask, why don’t refrigerators have a duct so the warm air can be vented outside in the summer?
In the winter I actually adjust the fridge temp to be colder so food lasts longer because the output is beneficial anyway.
Wouldn’t really make much difference, see the Technology Connections video, I think he even addresses this
If you had an exhaust vent, you’d need an intake, or else you’d be exhausting cooled interior air, which would then be mad up with exterior air intrusion somewhere (see Technology Connections video on portable air conditioners. Single hose units have the same issue)
Basically, the fridge doesn’t make much difference to the internal heat load of a house. The air exchanged when a person leaves/returns is probably orders of magnitude greater influence, or even using a few incandescent light bulbs.