This article feels a bit sloppy, but there are some cool details in it:

This means an ASIC operating at 3,000 watts produces virtually the exact same heat output as a 3,000-watt conventional space heater, but pays the owner for the privilege.

I've wondered about this. Apparently, an ASIC is about as efficient as a space heater at converting electricity to heat.

@Undisciplined was recently arguing in favor of widespread heatpunkery (#1442526) and this article makes me think he's not wrong:

Mining hardware manufacturer Canaan Inc. (@canaanio) is paving the way for enterprise-level heat reclamation with a 3 MW proof-of-concept in Manitoba, Canada, recovering ~90% of heat from 360 liquid-cooled servers to preheat water for a commercial greenhouse. Kent Halliburton (@khalliburton) of Sazmining is demonstrating similar scale with an Arctic Circle hydro-powered facility in Norway that replaces an oil-fired boiler for local community buildings. Christian Sartori at MARA (@MARA) and Colin Sullivan at MintGreen (@MintGreenHQ) are aggressively pursuing municipal district heating and commercial immersion, proving heat reclamation works from the retail-pleb to the industrial scale. Just to name a few.

At the consumer and prosumer level, builders like Dane Sjoden of Hashrate House (@hashratehouse) and Michael and Tom from Snorkel Hot Tubs (@SnorkelHotTubs) are delivering viral proofs-of-concept like the "Hashtub" (a hot tub heated by 200 TH/s of mining power - one of which will be prominently featured at this week's Heatpunk Summit). Toine (@TronMonGone) of 256 | HEAT inc. is developing turn-key retrofits to optimize bitcoin miners for space heating, and founders like Alex Busarov (@heatbit_com) are pushing product design so that hardware can sit quietly in a living room, resembling a high-end Dyson purifier.

There are some good points here about the larger heatpunk thesis:

As heating budgets "subsidize" electricity, the floor for profitable mining drops. A legacy facility might shut down when hashprice plummets, but a commercial greenhouse or a home heating system will never turn off their miners because the heat demand remains.