Hayward AquaRite T-15 (W3AQR15)
#3 in Large PoolsFull review
For large in-ground pools when you want to buy a Hayward salt system online and install it yourself; dealers sell the newer AquaRite S3 instead.
Amazon $2,099$2,099
The Hayward AquaRite T-15 (W3AQR15) is the better salt chlorinator overall, rated 3.4 to 3.3. The Hayward AquaRite T-15 (W3AQR15) leads on cell cost. The Hayward AquaRite S3 40K wins on features. The Hayward AquaRite T-15 (W3AQR15) costs $390.99 less ($2,099 vs $2,489.99).
Hayward AquaRite S3 40K
#6 in Large PoolsFull review
Hayward’s flagship salt system for large in-ground pools, best bought and installed through a Hayward dealer; it can grow into Omni app control.
Amazon $2,489.99$2,489.99
Prices were last checked October 27, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Hayward AquaRite T-15 (W3AQR15) for cell cost (Replacement cell $1,099 ($758 per lb/day) vs Replacement cell $1,800 ($1,224 per lb/day)).
- Choose the Hayward AquaRite S3 40K for features (Salt level readout, optional wi-fi module, works with hayward omni, cold-water shutoff, flow sensing, boost mode vs Salt level readout, works with hayward pro logic, pentair intellitouch, polaris eos, cold-water shutoff, flow sensing, boost mode).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every large pools salt chlorinator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Hayward AquaRite T-15 (W3AQR15) | Hayward AquaRite S3 40K |
|---|---|---|
| Overall rating | 3.4/5 | 3.3/5 |
| Value 30% | 36 $2,099 for 1.4 lb of chlorine a day ($1,448 per lb/day) | 28 $2,490 for 1.5 lb of chlorine a day ($1,694 per lb/day) |
| Cell cost 20% | 48 Replacement cell $1,099 ($758 per lb/day) | 22 Replacement cell $1,800 ($1,224 per lb/day) |
| Warranty 20% | 50 3-year cell, 3-year control center warranty | 50 3-year cell, 3-year control center warranty |
| Features 20% | 75 Salt level readout, works with hayward pro logic, pentair intellitouch, polaris eos, cold-water shutoff, flow sensing, boost mode | 90 Salt level readout, optional wi-fi module, works with hayward omni, cold-water shutoff, flow sensing, boost mode |
| Certification 10% | 100 Certified to NSF/ANSI 50 | 100 Certified to NSF/ANSI 50 |
Specifications
| Hayward AquaRite T-15 (W3AQR15) | Hayward AquaRite S3 40K | |
|---|---|---|
| Output | ||
| Pool type | In-ground | In-ground |
| Rated pool size (maker) | 40,000 gal | 40,000 gal |
| Chlorine output | 1.4 lb/day | 1.5 lb/day |
| Salt level | 2,700 to 3,400 ppm (ideal 3,200) | 1,200 to 8,000 ppm (ideal 3,200) |
| NSF/ANSI 50 certified | Yes | Yes |
| Cell | ||
| Replacement cell | W3T-CELL-15 | TCELLS340 |
| Replacement cell price | $1,099 | $1,800 |
| Self-cleaning | Yes | Yes |
| Plumbing size | 2 in | 2 in |
| Controls | ||
| Salt level readout | Yes | Yes |
| Flow sensing | Flow switch | Flow switch |
| Cold-water shutoff | Yes | Yes |
| Boost mode | Yes | Yes |
| Wi-Fi | No | Optional module |
| App | - | Hayward OmniLogic |
| Automation compatibility | Hayward Pro Logic, Pentair IntelliTouch, Polaris Eos | Hayward Omni |
| Voltage | 120/240 V | 115/230 V |
| Warranty and models | ||
| Warranty | 3 years | 3 years |
| Warranty terms | 3 years on the dealer-sold versions (AQR3XLCUL and siblings) bought from and installed by a pool professional; the online-sold W3AQR versions carry 1 year (manual, effective 03/01/12; Hayward's W3AQR15 page: 1 year parts, no labor). A replacement W3T cell bought alone carries 3 years parts. | Hayward's brochure gives AquaRite S3 a 3-year warranty, longer when sold and installed by a Totally Hayward partner; the product page lists 3 years parts and 1 year labor. Cells (TurboCell) carry 3 years. Accessories 1 year; commercial use 1 year. |
| Released | - | 2022-03 |