Salt Cell Replacement — When, How Much, and What to Buy
Salt cells don't last forever. Here's the replacement timeline, the brands worth buying, and the maintenance trick that gets you 2 extra years.
Typical lifespan
3–7 years depending on use, water chemistry, and brand. AZ pools that run year-round average 4–5 years. Properly maintained, you'll hit the high end.
Signs it's failing
- Low salt warning even with correct salt level.
- Plates visibly scaled or corroded when pulled.
- Chlorine output dropping despite cell being cleaned.
- Cell runtime needs to increase to maintain chlorine.
Replacement cost
Cell only: $500–$1,200 depending on brand. Installed by us: add ~$150 labor and a chemistry rebalance. DIY is straightforward if you're comfortable with pool plumbing.
Brands worth buying
Hayward T-Cell-15 (most common, easy to source), Pentair IC40, Jandy AquaPure. Avoid generic Amazon cells — short lifespan, poor warranty support.
The trick that adds 2 years
Inspect and acid-wash the cell every 90 days. AZ hard water scales fast. A 10-minute soak in muriatic-acid solution (1:10 dilution) at each season change keeps plates clean and output high. Skipping this is the #1 reason cells fail at year 3 instead of year 5+.
