Since learning how SWCGs work I've become curious about the economics of retrofitting hot tubs with such a system and what systems are available that are appropriately sized for hot tubs. So far my investigations have only lead me to find drape over systems, some of which claim to be "smart" (able to detect when they should be generating chlorine or not). A drape over system wasn't exactly what I had in mind. I would prefer a system I could insert into the circ pump/heater plumbing circuit inside the pump compartment of my tub so everything's contained and out of sight in the pump compartment. Are there any systems like that available anywhere? If yes, can you point me towards it/them?
From what I've learned, it seems you have to replace the generator cells every so often and they're kind of expensive. Given that chemical and reagent costs of operating a hot tub using the TFP system and using regular bleach, baking soda, muriatic acid and borax instead of overpriced chemicals from a spa store are not huge, my guess is you'll never save enough in chemical costs to even approach paying the costs of obtaining and operating the SWCG system. Am I correct in that assumption?
If the economics aren't there then the only other thing that could justify converting to a SWCG system would be convenience and ease-of-use. It would be worth something to me to eliminate the nearly daily need for FC testing and bleach top-ups. It would be nice to have a system that eliminated the need for that and reduce it down to perhaps weekly testing just to make sure everything's kosher with the water conditions and chemical levels in the tub. Is this something that's attainable with a SWCG system?
From what I've learned, it seems you have to replace the generator cells every so often and they're kind of expensive. Given that chemical and reagent costs of operating a hot tub using the TFP system and using regular bleach, baking soda, muriatic acid and borax instead of overpriced chemicals from a spa store are not huge, my guess is you'll never save enough in chemical costs to even approach paying the costs of obtaining and operating the SWCG system. Am I correct in that assumption?
If the economics aren't there then the only other thing that could justify converting to a SWCG system would be convenience and ease-of-use. It would be worth something to me to eliminate the nearly daily need for FC testing and bleach top-ups. It would be nice to have a system that eliminated the need for that and reduce it down to perhaps weekly testing just to make sure everything's kosher with the water conditions and chemical levels in the tub. Is this something that's attainable with a SWCG system?
