Thread by @Schnitzel

Presenting: #BitcoinHouseHeater
Based on the #BitcoinWaterHeater, this system can fully heat House, Water and HotTub with Bitcoin Miners, and this cheaper than the original heating costs (possibly completely free) 1/13

The 4x S9 Miners produce up to 6.6 kWh heat power, are immersion cooled with Bitcool and sit in a drinks cooler for best heat insulation. The oil can be heated up to 160F/70C, enough for heating house, pool and water. 2/13

All automated with HomeAssistant, ESPHome, Temperature Sensors, Relays and motorized Valves. Charts by Grafana for historical data and debugging. 3/13

Each consumer has its own oil loop and control system, which tells the central brain (Home Assistant) about temperature and status. The brain turns on the miners and pump and decides which loop receive oil and opens the valves. Each loop can run individually or all together. 4/13

The House is heated through the existing two zone baseboard and radiator heating system, which circulates hot water throughout the house. A plate heat exchanger installed into the existing system transfers the heat from the Bitcool to the water and heats the house. 5/13

The Water is heated with circulating the cold water from the bottom of the existing tank through a heat exchanger back into the cold water inlet of the tank. The existing thermostats on the tank are used to know when the hot water in the tank is cold and needs heat. 6/13

The HotTub is located in the yard, the water is pumped to the house, heated through a heat exchanger and back out to the hot tub. A temperature sensor in the HotTub tells us when it's hot enough to be enjoyed. 7/13

The HotTub and Water heating is already cheaper than the original heating as both of them were based on resistive heating and the miners have the same amount of efficiency but also produce Sats. Getting paid to shower and sit in the HotTub! 8/13

The House was Oil based and we spent around $900 a year for oil. With $0.12/kWh electricity and current BTC price it costs us $12 for the 4x S9 to run for 24h, so 1800h heating ($900/$12*24h). 9/13

With currently 50F/10C weather, the house needs heat for around 16h a day, this would give us 112 days of heating for the same cost as the oil. 10/13

Next step is to upgrade to 2x S19s, they have the same power (6.6kWh) but a much better efficiency and are profitable at $20k/BTC or at $0.08/kWh, if we can get that we would heat the house for free. 11/13

Like always I will write in depth articles on how the system works, create explainer videos and open source as much as possible. Plus I'm available for podcasts to talk more about the system, hit me up! 12/13

Bonus: Some behind the scene building pictures and videos:



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