A normal US water heater element pulls around 4,500W. This one pulls 600W, runs 20 Bitmain chips and mines Bitcoin. Heatbit dropped Bitwater on Oct 22. 34 TH/s, 12 J/TH, $899 on preorder, $1,299 for later batches. Ships Q1 2027. US and Canada tanks only, 1 inch fitting, 30 to 80 gallon. The pitch is simple. You were going to burn the electricity on hot water anyway, so the hashing rides on top. Heat is the product, coins are the rebate. Now the part the headlines skip frens. Heatbit’s own estimate is about $1 a day on its solo pool (some outlets say $1.25, approximate data, not confirmation). At that rate the $899 unit pays back in roughly 2 to 2.5 years. Pay $1,299 and you are past 3.5 years. And solo mining at 34 TH/s means that dollar is an expected value, not a paycheck. My read: it is a lottery ticket that also heats your shower. The angle is still real. Heatbit says water cools the chips so it runs silent, with lower element temps and less limescale, and a gas heater version is teased. If difficulty and BTC price move your way the math flips fast. If not, you bought a very expensive element. I’m tracking home mining hardware and will post real payback numbers when units ship. Would you screw one into your tank at $899, or wait for someone else’s 6 month payout screenshot?