Pentair IntelliChlor Plus40

Last updated: October 27, 2026

Pentair IntelliChlor Plus40
3.2/5#11 of 17 in large pools salt chlorinators
3.2

Pentair’s most common size, for pools up to 40,000 gallons, and the natural upgrade for an IC40 owner who keeps the power center.

  • 40,000 galRated pool size
  • 1.4 lb/dayChlorine output
  • $1,546Replacement cell
  • 3,000 to 4,500 ppm (ideal 3,600)Salt level
  • 3 yearsWarranty
Check price at Amazon$2,299

Price checked October 27, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Drop-in replacement for an IC40 cell on an existing IntelliChlor power center
  • Plus warranty: 3 years or 10,000 hours when installed by a pro
  • Shows the salt level in ppm and shuts off in cold water on its own
Cons
  • Needs the PC100 power center, sold separately (about $450)
  • Bought online, Pentair’s warranty shrinks to a short parts-only cover
  • Pentair app only through Pentair automation; no Wi-Fi on its own

The Pentair IntelliChlor Plus family

Every Pentair IntelliChlor Plus model we rank, smallest first. Ratings compare each against its own pool type.

ModelRated pool sizeRatingPrice
Pentair IntelliChlor Plus3030,000 gal3.3/5$1,675.50
Pentair IntelliChlor Plus40 (this one)40,000 gal3.2/5$2,299
Pentair IntelliChlor Plus6060,000 gal3.2/5$2,951.50

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its pool type. How we rank explains each one.

Specifications

Model numberPlus40 cell 523735 / 523735-EC + PC100 power center 520556
Output
Pool typeIn-ground
Rated pool size (maker)40,000 gal
Chlorine output1.4 lb/day
Salt level3,000 to 4,500 ppm (ideal 3,600)
NSF/ANSI 50 certifiedYes
Electrical listing (UL/ETL)Yes
Cell
Replacement cell523735
Replacement cell price$1,546
Self-cleaningYes
Plumbing size2 in
Controls
Salt level readoutYes
Flow sensingFlow switch
Cold-water shutoffYes
Boost modeYes
Wi-FiNo
AppPentair Pool (via Pentair automation)
Automation compatibilityPentair IntelliCenter, Pentair IntelliConnect, Pentair EasyTouch, Pentair IntelliTouch, Pentair SunTouch
Voltage115/230 V
Warranty and models
Warranty3 years
Warranty termsTradeGrade product: 3 years or 10,000 operating hours, whichever comes first, when bought from and installed by a pool professional (Plus cells). Pentair's warranty page gives TradeGrade products bought online a much shorter limited warranty (60 days on the product page; 1 year, parts only, on the warranty page), so DIY online buyers get far less cover.
Released2025

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