Clearwater & Zodiac Replacement Pool Chlorinator Cells

Replacing your Clearwater or Zodiac chlorinator cell is necessary when it stops producing chlorine, usually after 3 – 5 years of use, due to plate erosion. Signs include low output, “check salt” alerts, or green pool water. Replacing it ensures proper sanitation and prevents, unexpected system failure.

Genuine replacement cells are expensive and many cheap alternatives do not last long. The good news is Best Pool Chlorinators now sell generic replacement cells that are affordable yet still high quality.

For replacement options, check out our compatible generic pool chlorinator cells for Clearwater and Zodiac below. Available now and with free shipping provided by Best Pool Chlorinators.

Best Pool Chlorinators have chosen a selection of Clearwater and Zodiac saltwater replacement chlorinator cells to suit the most popular models of chlorinators.

Should we not have the model you require, please click the image at the bottom of the page to be taken to our partners for an even greater selection.

***The below cells are made using Genuine USA sourced high quality titanium plate, not cheap, inferior substitute material.***

They come with a 2 Year Domestic Warranty and 1 Year Commercial Warranty.

To select the correct Clearwater (by Zodiac) chlorinator cell, match your current model’s specific series (e.g., C-Series, LM2, or TRi) and its chlorine output rating to your pool volume.

Selecting the correct cell involves a few key steps:

1. Identify Your Exact Clearwater Model. Check your existing cell housing, the end caps, or the main chlorinator control box for model numbers. C-Series (C140, C170, C200, C250, C330) usually features a screw-on (threadlock) or bayonet-style cap. LM Series (LM2, LM3) have a distinctive transparent or solid white/grey housings with screw unions. TRi Series often use plug-in “compact” or “large” electrodes designed for specific TRi systems.
2. Match the Cell to Your Pool Size & Output (g/hr). Chlorinator cells are rated by how many grams of chlorine they produce per hour (g/hr). Determine your pool’s total volume in litres e.g., 50,000 litres. Calculate chlorine demand: A standard rule of thumb is roughly 20 to 25 grams per 50,000 litres. It is always best to oversize your cell e.g., for a 50,000 litre pool choose a cell rated for 75,000 litres or 25–30g/hr. Oversized cells don’t have to work as hard, allowing you to run them at a lower output, which significantly extends the cell’s lifespan.
3. Choose the Right Cleaning/Plate Type. Self-Cleaning (Reverse Polarity) reverses the electrical current periodically to shed calcium buildup, making it the most convenient option for high-mineral or hard-water areas whereas standard cells require manual soaking in a diluted acid mixture to remove calcium scale.
4. Decide on Genuine vs. Generic Replacements. Genuine Zodiac Clearwater cells may ensure an exact plug-and-play fit and maintain any existing manufacturer warranties but generic replacements from Best Pool Chlorinators or Kawana spares often cost less while using high-quality platinum or ruthenium-coated titanium plates and by the time you need a replacement cell, most warranties on the main unit will have passed anyway. Remember to double-check plumbing and thread compatibility though, just to be sure.

Replacing your Zodiac Clearwater chlorinator cell is necessary when it stops producing chlorine, usually after 3 – 5 years of use, due to titanium plate erosion. Signs include low output, “check salt” alerts, or green pool water. Replacing it ensures proper sanitation and prevents, unexpected system failure.

Yes, it is easy to replace a Zodiac Clearwater chlorinator cell yourself.

Installing a Zodiac Clearwater replacement cell involves turning off the pool pump, disconnecting the old cell, and securing the new unit. For most models, simply unscrew the cell housing cap, pull out the old cell, and insert the new one, ensuring the O-ring is properly seated. Hand-tighten the cap, connect the cables, and test for leaks.

Installation Steps:

1. Safety First: Switch off the pool pump and unplug the main unit. Close any relevant valves to prevent water loss.
2. Remove Old Cell: Unscrew the locking nut/cap on the housing. Unplug the cable connection at the back.
3. Prepare New Cell: Lubricate the new cell’s O-ring with a pool-safe lubricant to ensure a good seal.
4. Install New Cell: Slide the replacement cell into the housing.
5. Secure and Connect: Screw the cap back on hand-tight. Reconnect the cable, matching the colour codes.
6. Verify: Turn on the pump, check for leaks, and verify the cell is producing chlorine.

Note: If the cell is hard to remove, you can use a screwdriver to gently pry it. For specific wiring on older or different models, you may need to match the cable colours to the terminals on the cell.