The markets are not insignificant. The water heater market is approximately 100 million units per year. The largest markets are currently Brazil and China, I guess due to rapid urbanization and development. Of current deliveries, electric-powered units are a large share, possibly >50% (Brazil appears to lack gas distribution or has some other reason to favor electric, because almost all of the market there is electric.)
You mean
potential market. But you need to quantify what % of that market can be realistically captured.
I don't really understand what notion of "total efficiency" you are using other than what it is people in the market choose to buy. People seem to want to buy electric heating devices. There is little question that eventually these electric heating applications will migrate to some sort of mining-integrated solution, assuming mining continues to be a thing.
You don't agree that some (probably most) people in the market for a
water heater don't have incentive for the tsuris of figuring out all the details with getting a
mining device running, connected to the internet, integrate into their tax return, operational issues with wallets, etc.?
Hey I am at the hardware store and my gf is begging me to hurry up because we need to get to her mother's birthday by 2pm. I don't have time for this Bitcoin complication. Sell me a water heater please.
Naive non-marketers think "I want a water heater", "mining device makes heat free", "thus I want water heater + mining device". This is myopic because it doesn't factor in that the + operator is not a zero cost operation in the marketing context. Upsells are lossy especially if only 0.1% of the population is in the market for your upsell.
But there was an easier way to refute this point that had escaped both of us (only because I was too sleepy last night when I signed off).
A water heater requires 4000W of power (in order to provide rapid heatup function that most consumers demand). I can't find a BTC miner with that wattage consumption for less than perhaps $20,000. I just briefly checked and only saw a 1250W one for $10,200.
Who is going to pay $10,000+ (or even $1000) extra for a water heater?
The entire energy efficiency deal is a ruse and coverup for the real goal which is to shoehorn mining into smartphones for a market segment that has no knowledge nor use for it.
If excess heat were a viable business model, the miners would have long ago adopted it as major movement. It doesn't take $116 million in capital to figure out how to retrofit mining hardware onto an insulated water tank.
This is yet another example of how the TPTB are top-down misallocating resources (because the free market always does it better) and destroying the global economy into their NWO death paradigm.