Pool Filtration Systems: Types, Prices, and Which One to Choose
A pool filtration system is one of the most important components for keeping the water clean, crystal clear, and safe for swimming. Without a proper filtration system, the pool water would quickly become contaminated with bacteria, algae, and suspended particles. In this article, we’ll explain the different types of pool filtration systems, their updated prices for 2026, and how to choose the right one for your pool.
What Does a Pool Filtration System Do?
A pool filtration system performs two essential functions: it filters the water to remove suspended particles and circulates the water to ensure that the chemical treatment reaches every corner of the pool. A complete filtration system includes the water pump, the filter itself, and, in many cases, a dosing system for chlorine or other disinfectants.
Types of Filtration Systems Based on Filter Media
Sand filter: This is the most traditional and economical system. It uses flint sand as the filter medium to trap particles as small as 20–40 microns. Maintenance involves periodic backwashing to clean the sand. The cost of a complete system (pump + sand filter) for a family pool ranges from 300 to 800 euros.
Recycled glass filter: The filter media is ground, treated glass instead of sand. Its main advantage is that it filters smaller particles (10–15 microns), reduces chemical consumption, and has a longer service life than sand. The cost is 20–30% higher than that of conventional sand filters.
Cartridge filter: Instead of sand or glass, it uses polyester filter cartridges that are periodically cleaned with pressurized water. They are more compact and do not require backwashing (saving water), but the cartridges must be replaced every 2–3 seasons. Ideal for small or seasonal pools.
Diatomaceous earth (DE) filter: This is the most effective system in terms of filtration, capable of trapping particles as small as 3–5 microns. It produces exceptionally crystal-clear water. However, it is the most expensive and requires the most maintenance. It is used primarily in competition pools or high-end facilities.
How to Size the Filter System Based on Water Volume
To choose a suitable filtration system, the key factor is the pump’s flow rate, which must be capable of filtering the entire volume of water in the pool within 6–8 hours. This is called the “turnover time” and is the recommended standard for residential pools.
For a 50 m³ pool, you need a pump that filters at least 7–8 m³/hour. For an 80 m³ pool, the pump must have a flow rate of at least 12 m³/hour. These figures must be compared with the filter size, which also has a recommended maximum capacity.
Prices for Complete Filtration Systems in 2026
Prices for complete filtration systems in 2026 are approximately:
For small pools (up to 30 m³): 250–500 euros for a basic sand or cartridge filter. For medium-sized pools (30–60 m³): 500–900 euros for a medium-quality sand or glass filter. For large pools (over 60 m³): 900–2,000 euros for high-performance systems.
Energy Consumption and Efficiency
The electricity consumption of the pool filter pump is one of the most significant expenses in pool maintenance. Variable-speed (inverter) pumps can reduce consumption by 50% to 70% compared to fixed-speed pumps, with an initial additional cost of 200–400 euros that pays for itself in 1–2 seasons.
Filtration Systems and Reinforced PVC Liner Pools
Pools lined with reinforced PVC liner are compatible with all types of filtration systems. The smooth surface of the liner makes cleaning easier and reduces algae buildup. Additionally, the liner’s complete waterproofing ensures there are no water leaks that would require frequent refilling, thereby avoiding the associated energy costs of reheating the water.
If you need advice on which filtration system to pair with your reinforced liner pool, ArgPiscinas can help. At argpiscinas.es, we have specialized technicians who will recommend the most efficient and cost-effective filtration solution for your specific situation. Request a consultation today.
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