The Waterco Electrochlor 20A SC takes the Waterco Electrochlor 20A SC MK2 cell plate assembly 64428613 as its cell; Australian sellers list it from A$575.53 as of 31 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your salt chlorinator
Waterco Electrochlor 20A SC
Salt chlorinator
Confirmed against Waterco's listConfirmed against Waterco's own compatibility list
Not yours? ChangeTakes the 64428613 cell
Electrochlor 20A SC MK2 cell plate assembly 64428613 · check the code on your old part before ordering.
Plate assembly only: it fits your existing cell housing under the 65 mm lock nut.
Your salt chlorinator
Salt chlorinator
Confirmed against Waterco's listConfirmed against Waterco's own compatibility list
Takes the 64428613
Cell · check the code on your old part.
Plate assembly only: it fits your existing cell housing under the 65 mm lock nut.
Other Waterco salt chlorinators and their cells
The 64428613 fits the Electrochlor 20A SC only. These Waterco models take a different cell:
GenuineGenuine Waterco
See seller
No genuine seller tracked yetNo genuine seller tracked yet
CompatibleCompatible option
$575.53
Pool Shop · 31 OctPool Shop · checked 31 Oct
Check sellerCheck seller details
Genuine: made by Waterco. Compatible: another brand.Genuine is made by Waterco. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest compatibleLowest compatible price · $575.53
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Compatible options
1 seller
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How long it lasts
Replace it when it no longer makes enough chlorine even though the run time, output setting, salt level and water balance are right and the plates are clean, Waterco says; it gives no set life.
After replacing: No reset needed. Set the chlorinator back to On or Auto after fitting and check the output.
How to change the cell in your Waterco Electrochlor 20A SC
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Set the chlorinator to off and turn the filter pump off.
- 2Pull off the cell terminal cap and disconnect the cables from the cell's brass connectors.
- 3Undo the 65 mm lock nut on the cell housing and draw out the old plate assembly.
- 4Fit the new plate assembly with the 65 mm O-ring seated and tighten the lock nut by hand.
- 5Reconnect the cables and the terminal cap, start the pump and check for leaks, then set the chlorinator back to On or Auto.
Every number this part goes by
- Retail name:
- 64428613
Sellers list any of these; they are the same part.
About your Waterco Electrochlor 20A SC
Waterco salt chlorinator — Electrochlor self-cleaning salt chlorinator. Its cell is the Electrochlor 20A SC MK2 cell plate assembly 64428613, part 64428613.
Where the model number is: The model and output are on the label on the power supply or control box near the pump. Switch the chlorinator and pump off at the power point before you touch the cell.
Fits this Waterco model
Waterco1 model
Plate assembly only: it fits your existing cell housing under the 65 mm lock nut.
Common questions
- Which cell fits the Waterco Electrochlor 20A SC?
- The Waterco Electrochlor 20A SC takes the Waterco Electrochlor 20A SC MK2 cell plate assembly 64428613. Plate assembly only: it fits your existing cell housing under the 65 mm lock nut.
- Where can I buy the 64428613 in Australia?
- We track 1 Australian seller for the 64428613; the lowest listed price when we last checked was A$575.53 at Pool Shop. Prices are re-checked daily and dated on this page.
- How do I fit the 64428613 in a Waterco Electrochlor 20A SC?
- 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A worn cell makes too little chlorine, so the water turns green or cloudy, and turning the output up only wears it faster.
- Is there anything to reset afterwards?
- No reset needed. Set the chlorinator back to On or Auto after fitting and check the output.
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