Zodiac Ei Mid 25 Replacement Chlorinator Cell | W197621
Zodiac W197621 Ei Mid 25 Replacement Chlorinator Cell
The W197621 is a replacement chlorinator cell for compatible Zodiac Ei Mid and Ei 25 salt chlorination systems. With a nominal output of 25 g/h and 11 plates, it restores full chlorine production where W197621 is the manufacturer-specified replacement. Always confirm the part number on your existing cell before ordering.
Before ordering, confirm the exact chlorinator model and replacement cell part number. Zodiac Ei, Ei2 and Ezi Salt cells can look similar but are not automatically interchangeable. This cell must not be assumed compatible with Zodiac Ei2 or Ezi Salt systems, as those use different replacement part numbers.
Key Features
- Part number W197621. Confirm this matches the number printed on your existing cell end cap or chlorinator documentation before purchasing.
- Nominal 25 g/h chlorine output. Mid-size cell for compatible Ei Mid and Ei 25 systems.
- 11-plate cell. Electrode surface area specified for this output rating.
- Self-cleaning operation. Reduces calcium scale build-up on plates to extend service life.
- Clear cylindrical housing. Inline flow-through design with colour-coded electrode connections.
Compatible Chlorinator Models
Replacement chlorinator cell for compatible Zodiac Ei Mid or Ei 25 systems requiring manufacturer part W197621. This cell must not be assumed compatible with Zodiac Ei2 or Ezi Salt systems. Check the existing part number before ordering.
Technical Specifications
| Manufacturer Part Number | W197621 |
| Brand | Zodiac |
| Cell Size | Mid |
| Nominal Chlorine Output | 25 g/h |
| Plate Count | 11 |
| Approximate Plate Dimensions | Confirm with supplier |
| Self-Cleaning | Yes |
| Includes Housing | Yes |
| Plumbing Connection | Confirm with supplier |
| Compatible Power Pack | Zodiac Ei Mid / Ei 25, confirm part number W197621 in documentation |
What Is Included
- 1 x Zodiac W197621 Ei Mid 25 replacement chlorinator cell
Before Ordering
- Locate the part number printed on the end cap of your existing cell.
- Confirm the part number is W197621, not a visually similar Ei2 or Ezi Salt cell.
- Cross-reference with your chlorinator power pack documentation or Zodiac equipment manual.
- Do not order based on appearance or output rating alone.
- If unsure, contact us before purchasing.
Cell Care
- Maintain salt levels within the range specified in your chlorinator documentation.
- Test salt and water chemistry regularly to protect cell plate life.
- Inspect cell plates periodically for calcium scale build-up and clean as directed by the manufacturer.
- Do not run the cell dry or outside the specified flow rate range.
Installation Note
Isolate chlorinator power and pool circulation before replacing the cell. Follow the manufacturer installation instructions supplied with the unit. Where required by local regulations, or where you are unsure, engage a qualified pool technician or licensed electrician.
