Hayward AquaRite S3 25K
#3 in In-GroundFull review
For mid-size in-ground pools where a pool pro installs the system; it controls a Hayward VS pump and heater without separate automation.
Amazon $2,199.95$2,199.95
3.2/5
A plug-in Pentair salt system for small in-ground pools up to 15,000 gallons, sold complete with its own power pack.
- 15,000 galRated pool size
- 0.7 lb/dayChlorine output
- 3,000 to 4,500 ppm (ideal 3,600)Salt level
- 2 yearsWarranty
Check price at Amazon$1,159
Price checked October 27, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Plugs into a 115 V GFCI outlet, so no electrician is needed for the power pack
- Shows the salt level in ppm and shuts off in cold water on its own
- Works with Pentair automation and the Pentair app if you add it later
Cons
- Rated for only 15,000 gallons, so it suits small pools only
- LT warranty is 2 years or 6,000 hours, shorter than the Plus models
- Bought online, Pentair’s warranty shrinks to a short parts-only cover
The Pentair IntelliChlor LT family
Every Pentair IntelliChlor LT model we rank, smallest first. Ratings compare each against its own pool type.
| Model | Rated pool size | Rating | Price |
|---|---|---|---|
| Pentair IntelliChlor LT15 (this one) | 15,000 gal | 3.2/5 | $1,159 |
| Pentair IntelliChlor LT25 | 25,000 gal | 3.0/5 | $1,600.51 |
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 number | 523744 / 523744-EC (LT15 cell 523741 + LT15 Power Pack 523753) |
|---|---|
| Output | |
| Pool type | In-ground |
| Rated pool size (maker) | 15,000 gal |
| Chlorine output | 0.7 lb/day |
| Salt level | 3,000 to 4,500 ppm (ideal 3,600) |
| NSF/ANSI 50 certified | Yes |
| Electrical listing (UL/ETL) | Yes |
| Cell | |
| Replacement cell | 523741 |
| Self-cleaning | Yes |
| Plumbing size | 2 in |
| Controls | |
| Salt level readout | Yes |
| Flow sensing | Flow switch |
| Cold-water shutoff | Yes |
| Boost mode | Yes |
| Wi-Fi | No |
| App | Pentair Pool (via Pentair automation) |
| Automation compatibility | Pentair IntelliCenter, Pentair IntelliConnect, Pentair EasyTouch, Pentair IntelliTouch, Pentair SunTouch |
| Voltage | 115 V |
| Warranty and models | |
| Warranty | 2 years |
| Warranty terms | TradeGrade product: 2 years or 6,000 operating hours, whichever comes first, when bought from and installed by a pool professional (LT 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. |
| Released | 2025 |
Alternatives in this pool type
Pentair IntelliChlor Plus30
#4 in In-GroundFull review
A mid-size Pentair Plus system for pools up to 30,000 gallons, best bought through a pool pro to keep the 3-year warranty.
$1,675.50
Hayward AquaRite T-9 (W3AQR9)
#6 in In-GroundFull review
Hayward’s online-sold salt system for mid-size in-ground pools: a proven design, but with only a 1-year warranty bought this way.
Amazon $1,999$1,999
Compare
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