Thats decent. Who knows as we RIP might be profitable to fire up some s19s at your place. Although prolly wouldn't last long. For reference i pay .34 kWh

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This only accounts for the bitcoin output. I am heating with an s19 and happy with my returns at 15c/kwh.

Well of course. This isn't necessarily an all encompassing thing. This is a base number to Guage profitability if mining is all youre gunna do and you care about a profit.

Are you using a Heatbit? I was looking up calculators for heating with a Heatbit and that's what triggered my kWh cost investigation.

We do have some electric heaters in the house, so if I can replace one of those with a Heatbit or similar *and* pay less in electric *and* have BTC price go up this year, I imagine I'll be pretty happy.

Regular old s19 converted to use an 8" AC infinity fan.

If you are replacing an electric space heater it is a watt for watt swap and you get 100% profit in a sense because you get the same heat per dollar from a miner as an electric space heater.

I have mini splits which use a variable amount of electric per BTU depending on outdoor temp and duty cycle needed to keep up. The colder and windier the more $/BTU they cost me. The miner creates a base heat that keeps my mini splits at a cheaper duty cycle. Not quite as straight forward but I still get more sats than just doing a DCA with the extra $ I spend on my electric bill.

...minus the cost of the mining hardware (and replacing them when they croak)..

Then your next rabbit hole is electronics repair so you can fix your own hashboards.

better off buying a significantly better heater and buying nokycBTC with the savings.

i've done the math can send spreadsheets if you want

I have top of the line mini splits and my real world full year of heating data in my real house. I don't need your spreadsheets.

What people pay for heat varies. Local climate varies and heat source and heat source options vary. If you have geothermal already you may be right. I can't have that and run air to air mini splits. If you are using resistive electric heat for some reason a miner is a no brainer.

In my travel trailer I have found an s9 is the financially best possible heater given the constraints of that environment for example.

Ding ding! I AM running resistive electric heat - and old terrible ones. The reason: house came with them.

You have a guide you'd recommend for turning an s9 into a resistive electric heat replacement? I'm solidly in the "no-brainer swap" category you mentioned.

I got my s9 from the site below.

Add a power supply.

Get one of the 140mm fan options, quieter. Runs Braiins firmware because it gives you more control over output, 100w to 500w per hash board.

Make sure to spread them around breaker wise and stay under your total panel limit.

You will get 5x the sats per watt of electric input from an s19 than a s9 even though they output the same BTU per watt of input. I strongly prefer s19s with a single hash board (600w minimum output for a single hashboard enabled in braiins) unless the higher minimum wattage is too much heat for your space.

https://d-central.tech/product/bitmain-antminer-s9/

I'm always in the mood for spreadsheets!

I'd add that given my experience trying to silence a full s19 myself, I think one of the pre silenced s19s like the urlacher is a good investment for most people trying to heat a living space with a miner.