Hayward AquaRite 940
#1 in Large PoolsFull review
For large in-ground pools on Pro Logic, IntelliTouch or Eos automation, with a four-year warranty, bought through a pool pro.
$2,199.99
The Hayward AquaRite 940 is the better salt chlorinator overall, rated 3.6 to 3.3. The Hayward AquaRite 940 leads on warranty. The Hayward AquaRite S3 40K wins on features. The Hayward AquaRite 940 costs $290 less ($2,199.99 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 940 for warranty (4-year cell, 4-year control center warranty vs 3-year cell, 3-year control center warranty).
- 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 940 | Hayward AquaRite S3 40K |
|---|---|---|
| Overall rating | 3.6/5 | 3.3/5 |
| Value 30% | 34 $2,200 for 1.4 lb of chlorine a day ($1,517 per lb/day) | 28 $2,490 for 1.5 lb of chlorine a day ($1,694 per lb/day) |
| Cell cost 20% | 50 no current cell price (neutral score used) | 22 Replacement cell $1,800 ($1,224 per lb/day) |
| Warranty 20% | 75 4-year cell, 4-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 940 | 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 | TCELL940 | TCELLS340 |
| Replacement cell price | - | $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 | 4 years | 3 years |
| Warranty terms | Manual (effective 02/12/16) and brochure: 4 years on AquaRite 900 series, residential, original owner; accessories 1 year, commercial use 1 year. Hayward's product page lists 3 years parts and 1 year labor. No labor or shipping under the manual's terms. | 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 | 2020-03 | 2022-03 |