And then your freezer turns on and dumps a bunch more heat into your environment.

Better only use store bought ice for this trick.

I wonder how much we'd benefit from having seasonal control over where electrical appliances send their waste heat:

For example:

- ovens: vent outside on hot days, inside on cold days.

- clothes driers: vent outside on hot days, and on warm days either (a) vent inside through a filter or (b) send the exhaust through an indoor heat-exchanger before venting.

- refrigerators: cooling coils cooled with indoor air on cold days, outdoor air on hot days.

"- clothes driers: vent outside on hot days, and on warm days ... send the exhaust through an indoor heat-exchanger before venting."

We live in the tropics and do not have anywhere to hang clothing to dry.

We use a heat-pump dryer which heats the air on the 'hot' side then through the clothes and then circulates the now-moist air through the 'cold' side which removes the excess heat and condenses the water vapour.

The same air then goes through the cycle all over again. That means no huge amount of hot, wet air escaping into an already hot house which needs to be either vented or cooled.

And because the energy used in heating the air is not thrown away by venting it, but is recaptured by the 'cold' side, the dryer is cheaper to run.

But then you're having THEM dump the heat into your environment, doubly so if you have to burn dinosaurs to get there and are expelling a bunch of green house gases. Think of your neighbourhood!

I also put salt on the ice. It’s very cold after a short period of time.