Saltwater Chlorinator for Swimming Pools: Installation, Price, and Maintenance
Salt-based pool chlorinators have become the most popular disinfection system in Spain. They automatically convert the salt dissolved in the water into active chlorine through electrolysis, eliminating the need to add chlorine manually and providing better water quality with less eye and skin irritation.
How Salt Chlorination Works
The process is based on the electrolysis of sodium chloride. The system passes a low-voltage electric current through the salt water, separating the chlorine and sodium ions. The active chlorine generated disinfects the water and is then converted back into salt, which is continuously reused. It is a highly efficient closed-loop system.
The required salt concentration is 3 to 5 grams per liter, or between 3 and 5 kg of salt per 1,000 liters. For a 48,000-liter pool, you would need 150 to 240 kg of salt for the initial charge. The water is slightly salty, barely noticeable to the taste compared to seawater, which has a salinity of 35 g/l, versus the 4 g/l in a saltwater pool.
Advantages Over Traditional Chlorine
There are no residual chloramines, which are responsible for the odor and eye irritation associated with traditional chlorine. The system automatically dispenses the exact dose according to the programming. The salt is recycled, and you only need to replenish what is lost through evaporation and splashing. Salt improves the water’s texture, making it feel silkier. There is no need to handle or store concentrated chemicals, which improves safety.
Prices in 2026
Basic chlorinators for pools up to 30 cubic meters cost between 600 and 900 euros. Models for pools up to 50 cubic meters—the most common ones—cost between 900 and 1,500 euros. Systems for pools up to 80 cubic meters with automatic pH control cost between 1,500 and 2,500 euros. Professional installation costs an additional 200 to 400 euros, and the initial salt supply for an 8x4 pool costs between 40 and 80 euros. The best-selling brands in Spain are Zodiac, Hayward, Astralpool, and Idegis.
Salt Chlorinator Installation
The chlorinator is installed in the water return line, after the sand filter and the heater, if present. Installation includes mounting the cell on the return pipe, connecting the control panel, programming the unit, and adding the initial salt. The entire process takes between 2 and 4 hours.
Maintenance
Check the salt levels monthly, as well as the pH (between 7.2 and 7.6) and the free chlorine level, which with salt chlorination should be between 0.5 and 1 ppm. The cell should be cleaned with diluted acid every 500 hours of operation to remove limescale deposits. Choose a chlorinator with a titanium cell coated with platinum or ruthenium oxide for greater durability, with a service life of 5 to 10 years.
Compatibility with Reinforced PVC Sheets
Reinforced PVC liner is perfectly compatible with salt chlorination. Unlike mosaic tile, whose mortar can be affected by salt over the long term, reinforced liner has no joints or porous materials that can deteriorate. It is the ideal combination for a low-maintenance pool with maximum durability.
Contact us for a quote on a salt chlorinator installation tailored to your pool and discover the best combination of pool lining and equipment to minimize annual maintenance.
Frequently Asked Questions
How much does it cost to install a salt chlorinator?
Between €800 and €2,500 for the unit, depending on the pool’s volume and model, plus professional installation (approximately €200–€400). In return, you eliminate the need to constantly purchase and handle chlorine.
Is a salt chlorinator compatible with reinforced liner pools?
Yes. Saltwater chlorination is fully compatible with pools lined with reinforced liner; it simply requires maintaining salt and pH levels within the ranges recommended by the manufacturer.
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