Comino N1 and the Comino N4

«The device could net you about $300 a month. That number, of course, will also vary based on your local energy consumption rates. The upside to this is that, in addition to stacking crypto coins, each Comino cryptoheater packs enough oomph to keep a 25-30 square meter room comfortably warm, according to the company. Perhaps the least appealing aspect about the Comino cryptoheater is its exorbitant price. The device sells at $5,000 a pop, though you can currently cop one at a discount at $4,500».

Source : Russians have invented a high-tech heater that also mines Ethereum