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.