Staff Answer
Aug 07, 2026 - 11:44 AM
Yes, the APX P40 chlorinator can be made to replace the older Pentair iChlor 30, although re-plumbing is necessary due to differences in dimensions. The APX P20, P40, and P60 cells are longer like IntelliChlor cells, and iChlor cells are shorter; other than that, these items can utilize the same threaded fittings and the same power center.
An important thing to note if you are looking at the P20 is that it has lower chlorine output than the iChlor30. While you may be able to get by with it if your pool size is well within the P20's capacity, it isn't typically recommended to downsize and you'd want to realize ahead of time that you would have less chlorination capability than you might be used to.
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