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One of the most common questions we get from customers planning a tub installation is some version of "how much energy does this actually take?" Fair question. Whether you are sizing a heater, deciding between electric and propane, or trying to figure out how many bags of ice it takes to drop a cold plunge to 55°F, the answer comes down to a small handful of numbers.

This post walks through that math for our two standard sizes — using real Pacific Northwest tap water temperatures — so you can plan your setup with eyes open.

Soaking in a traditional Japanese ofuro is a transformative experience, but it does take some planning. These tubs hold significantly more water than a standard American bathtub — roughly 80 to 140 gallons compared to the usual 25 to 45 gallons.

The good news: most US homes can handle this without a massive utility overhaul. You just need to understand your hardware.

Neck-deep soaking in water has been practiced across many cultures for a long time as its own form of relaxation and therapy. It is immersion—neck-deep, still, in warm, hot, or even cold water—held long enough for the body to respond. Muscles release. Joints decompress. Breathing changes. It is closer to a physical practice than a luxury.

For simplicity we have changed out domain and updated our website to woodsoakingtubs.com. If you found us through elementalworks.studio or elementalsoak.com, we're the same builders.