If your Hayward AquaRite salt system has been running for 3–7 years and chlorine output is dropping no matter how much you clean it, the cell’s titanium plates have worn out and it’s time for a replacement TurboCell. The good news: it’s a 20-minute swap. The catch: there are three different TurboCell sizes, and the wrong one will either fail prematurely or refuse to communicate with your AquaRite control box. This guide walks through how to pick the right T-CELL replacement for your pool.
The three Hayward TurboCell sizes
Hayward names its salt cells by the maximum pool volume they can sanitize:
| Model | Max pool size | Best for |
|---|---|---|
| T-CELL-3 | Up to 15,000 gallons | Small residential pools, spas, plunge pools |
| T-CELL-9 | Up to 25,000 gallons | Standard residential in-ground pools |
| T-CELL-15 | Up to 40,000 gallons | Large residential pools, light commercial, vacation rentals |
Always size UP, never down
The most important rule in salt cell sizing: when in doubt, buy the larger cell. A T-CELL-15 in a 20,000-gallon pool will run at lower duty cycle, produce chlorine more easily, and last significantly longer than a properly-matched T-CELL-9 in the same pool. A T-CELL-9 in a 30,000-gallon pool will run at maximum output constantly, struggle to keep up in summer, and burn out the titanium coating in half the expected time.
Why the T-CELL-15 is our most-recommended pick
For pools between 18,000 and 40,000 gallons, the T-CELL-15 is almost always the right choice. Three reasons:
- Longer service life. The T-CELL-15 has more titanium plate area than its smaller siblings, so it carries the same chlorine demand at a lower current density. That extends cell life from a typical 3–4 years to 5–7 years in the same pool.
- Better summer headroom. Peak demand in July with high bather load can push a smaller cell to 100% duty cycle. A T-CELL-15 has spare capacity, so it produces chlorine through heatwaves without struggling.
- Same control box, same plumbing. All three cell sizes plug into the same AquaRite control box and the same standard 2-inch plumbing union. You don’t need to change anything else — just tell the AquaRite which cell size is installed via the on-board menu.
Compatible AquaRite controllers
The T-CELL family works with all modern Hayward AquaRite control boxes:
- AquaRite (original W3AQR15 series)
- AquaRite Pro
- AquaRite 900 (with TurboCell)
- AquaLogic / OmniLogic when configured for TurboCell
- Pro Logic systems with T-CELL controller card installed
If you have a Hayward Goldline AquaRite from before 2014, the cell connector and software are the same — the new T-CELL drops in.
Our top picks in stock
Hayward T-CELL-15 (up to 40,000 gal)
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Hayward T-CELL-9 (up to 25,000 gal)
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Hayward T-CELL-3 (up to 15,000 gal)
Shop NowAfter installing the new cell
Three things to do right after the swap:
- Tell the AquaRite which size you installed. Press and hold the “Diagnostic” button until you see “Cell Size”. Set to match (T-3, T-9, or T-15). The wrong setting will cause permanent “Inspect Cell” warnings.
- Reset the cell’s hour count. Same diagnostic menu — clear so the cell starts at zero hours instead of inheriting the old cell’s history.
- Verify salt and stabilizer. Cells produce best at 3,000–3,400 ppm salt and 60–80 ppm cyanuric acid. See our add salt tutorial.
How to extend the new cell’s life
The biggest predictor of salt cell longevity is pH. Keep pH between 7.4 and 7.6, and inspect/clean the cell every 3 months per our cell cleaning tutorial. A T-CELL-15 cared for properly lasts 6–7 years; one that runs on a pool with chronic high pH lasts 2–3.
Not sure which size cell your pool needs? Send PST Pool Supplies your pool gallons and the model of your existing AquaRite, and we’ll pick the right cell — usually same day.