Welcome to our forum.
I always think of the calzone when talking about the Cal Zone.
Chris,Why are you so concerned? Spa tech...it is a corona discharge!
Stuart,I think you have my phone number....at the very least my e-mail...if you have any questions..... just ask.
Does anybody say specifically how long anything should last? Other than LED's? The problem with Cal is the Lifetime writing on heater & Cal Zone, which is misleading to say the least.