Don Klipstein writes:

You claimed 1.25 times as much energy to move the heat from the
kitchen to the outdoors as is consumed by the fridge in article
. You claimed in that
article $1 per day for the fridge and $1.25 again per day to move the
heat from the kitchen to the outdoors.

Simply an observation that if it cost $1 to pump some quantity of heat from
inside the refrigerator to the kitchen, it is going to cost about that much
to pump it again from the kitchen to outdoors, plus the additional heat
generated by the first pump.

What does that have to do with the 3:1 rule-of-thumb which I claimed
was for an air conditioner?

The 3:1 rule applies to one hop, moving heat from one place to another.
For an air conditioner you're sinking into the outside world on one
thermodynamic path, so it's one hop. A refrigerator has multiple paths,
and ultimately sinks into the room air, so the heat from making ice has
many hops, and the 3:1 rule does not apply. It can be worse if you're air
conditioning, or better if you're heating.