There are 11 spec fields behind each of the 35 units here, which is 385 cells. 226 of them carry a value and 159 are empty. Empty means nobody publishes the number — 28 of these units ship without a horsepower rating anywhere on the maker’s site, and a chiller’s HP is not something you can eyeball off a product photo. A blank cell stays blank until someone can point at a source.
The other half of the job is knowing which of these 21 brands still answer the phone. Cold plunge companies have folded mid-warranty, and the owners find out before anyone else does.
Your address answers you and is then dropped. It is not sold, not rented and not on a list, and no tub or chiller brand — including the ones still trading — learns who asked about its warranty.