Zodiac EL25 Chlorinator

The EL25 (product code WW000264) is built for small and mid-sized residential pools. If your pool is larger, heavily used, or sits in full sun where chlorine demand runs high, the EL35 is the better choice. Undersizing a chlorinator means running it for excessive hours and still struggling to hold chlorine in midsummer. We will size it against your pool volume and usage.

Salt is dissolved in your pool water, and the chlorinator cell passes a current through it to convert the salt into chlorine. That chlorine sanitises the pool, then reverts to salt, and the cycle repeats. You are not swimming in salt water at seawater strength, and you are not handling drums of liquid chlorine each week.

Cell life depends heavily on water balance and run hours. Cells are consumable items and are replaceable rather than requiring a whole new unit. High calcium hardness, unbalanced pH and excessive run time all shorten cell life. Our service customers get water balance managed properly, which is the single biggest factor in how many seasons a cell delivers.

Enough to produce the chlorine your pool consumes, which changes with weather and bather load. In an Auckland summer that is typically longer than in winter, and after a party or a heavy rain event you may need to increase it temporarily. We set run times at commissioning and adjust them seasonally for pools on our service programme.

Salt level needs to sit within the range the chlorinator requires, and both too little and too much cause problems. Too little means poor chlorine production and cell strain, too much can be corrosive to some surfaces and fittings. We test and correct salt levels as part of servicing so the unit runs in its proper window.

At correct levels, no. Problems come from unbalanced water rather than from salt itself. Aggressive water attacks plaster, tile grout and metal fittings whether or not the pool is salt chlorinated. Keeping pH, alkalinity and calcium hardness in range protects both your pool surface and your equipment.

No. A chlorinator is hardwired 240V equipment and must be connected by a registered electrician in New Zealand. Sparkling Pools has a qualified electrician on the team, so supply, plumbing into the return line, electrical connection and commissioning happen in one visit under one quote.

Same technology, different output. The EL35 (WW000265) produces more chlorine per hour, which suits larger or more heavily used pools. The EL25 is the more economical choice where the pool volume genuinely suits it. Buying the EL25 for a pool that needs an EL35 is a false economy, and we will tell you which one your pool needs.

The EL25 carries a manufacturer backed warranty, with duration and conditions set by Zodiac. Note that cells are generally covered separately from the power supply, which is normal across the category since cells are consumable. Your purchase is also covered by the New Zealand Consumer Guarantees Act. We register the warranty and manage claims for you.

Chlorinator performance depends almost entirely on correct sizing, correct salt level and balanced water, none of which come in the box. We have serviced Auckland pools since 1992, we size the unit properly, install it with a qualified electrician, and can keep the water right for you afterwards. Call 09 570 4797.