When will bitcoin miners replace heaters?

We know that there is that SPA in new york that heats their pools with bitcoin miners. It is happening in today's world as we speak.

Because of this:

We should ban heaters in place of bitcoin miners.

Bitcoin miners will produce the same amount of heat as a heater using the same amount of electricity. The heater doesn't earn bitcoins though, so heaters should now be obsolete.

I want:

A bitcoin miner furnace to heat the house.

A bitcoin miner stove to cook my food.

A bitcoin miner shower.

A bitcoin miner floor heater.

Restaurants powered by bitcoin miners (hot oil for frying, ovens, etc)

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Heat is a by-product of many things. We should harness this heat and use it when we need it.

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