Pentair IntelliChlor Plus40 Salt Chlorine Generator Cell | 40,000 Gallons | 523735-EC

The Pentair IntelliChlor Plus40 is the salt cell our techs install more than any other. If your IC40 is showing its age — low chlorine output, calcium buildup that won't clean off, or error codes you can't clear — this is the direct drop-in replacement that requires zero replumbing. Designed for pools up to 40,000 gallons, the Plus40 is Pentair's next-generation upgrade over the original IC40. It delivers the same reliable chlorine production with a redesigned conductivity sensor that reads salt levels with 98% lab-grade accuracy. The modular design also means future sensor or controller replacements take half the time. Direct drop-in replacement for Pentair EC-520555 IntelliChlor IC40 — no replumbing required Pools up to 40,000 gallons | 1.40 lbs chlorine output per 24 hours at 100% Compatible with existing IntelliChlor Power Center (520556) and Pentair automation systems LCD/LED display with 20+ built-in diagnostics and warnings Acid cleaning kit included in box Modular design: 50% faster sensor module replacement vs. original IC40 ⚡ Pro Tip from Our Techs: Before you install a new cell, always check your salt level with an independent test — don't rely on the old cell's reading. We see techs replace cells that weren't actually bad; the salt was just low. Target 3,200–3,800 PPM. Also, clean your new cell with muriatic acid every 3 months to maximize its lifespan. We get 5–7 years out of these with proper maintenance. What's in the Box: Pentair IntelliChlor Plus40 Salt Cell (523735-EC) Acid washing stand and cleaning kit Installation and maintenance guide Requires Pentair IntelliChlor Power Center (520556) — sold separately