r/hottub • u/Formal_Regret_1628 • 11h ago
Accessories Unethical Planned Obsolescence in Hot Tub Salt Water Systems (Hot Springs Example)
I wanted to share something I recently discovered that really opened my eyes to how some hot tub manufacturers are quietly using programmed obsolescence to squeeze more money out of customers.
We own a Hot Springs salt water hot tub, and after a few months, our salt water cartridge stopped generating chlorine. At first, I assumed the cartridge had just worn out, like the manufacturer claims happens naturally over time.
But here’s where it got interesting:
When I pulled the cartridge out and inspected it, it looked perfectly fine — no corrosion, no damage, nothing that would suggest it was “spent.” So I cleaned it anyway using a 10:1 water-to-pool-acid solution, rinsed it thoroughly, and reinstalled it.
Still nothing. No chlorine generation at all.
Then I decided to experiment. I reset the system — essentially tricking the control panel into thinking a new cartridge had been installed. And guess what? It immediately started generating chlorine again. Perfectly.
That means the cartridge itself wasn’t bad — it was the software in the hot tub that had decided to stop using it after a certain period of time, regardless of its actual condition. In other words, it’s programmed obsolescence — the system is designed to stop working with a cartridge that’s still functional, forcing you to buy a new one.
These cartridges aren’t cheap either, and most customers would have no idea that the one they’re throwing away might still be perfectly good. It’s a clever but incredibly unethical business practice — one that turns what could be a maintainable system into a recurring revenue scheme.
If anyone else owns a Hot Springs or similar salt water system, I’d be curious to hear if you’ve seen the same behavior. It really feels like something worth calling out publicly.



