Co-founder here, capital utilization and market size. Not everywhere needs heat and those that do typically only need it for part of the year.<p>The installation isn&#x27;t super technical but it makes a lot of sense if you are already replacing an old water heater. As for renters it could be tricky, even without them the water heater market dwarfs the bitcoin mining market. Landlords would see it as a similar investment to solar panels except less up front shorter and better ROI.