This house in Siberia in the youtube video below is heated entirely from heat generated from bitcoin mining.
“People who mine cryptocurrencies use big miners. And they just heat the atmosphere. And we say, ‘No, the environment! We shouldn’t heat the atmosphere. We have a nine-month long heating season. We should heat our homes. The miners should not be concentrated in one place. They should be in various places, in private homes. The technology allows it nowadays.”
I think it's a great use of any cryptocurrency coin mining. Do it also mining something like GridCoin or CureCoin and we've got the whole package.