LiqTech's Ceramic Filters Make Waves in Commercial Pool Market

BALLERUP, Denmark – January 13, 2026 – LiqTech International, a Danish clean technology firm, has announced a landmark achievement, reporting record sales of 34 commercial pool filtration systems in 2025. This milestone signals not just a successful year for the company but a potentially significant shift in the multi-billion-dollar commercial aquatics industry, where aging infrastructure and rising operational standards are creating a powerful demand for innovation.

The sales, all featuring the company's proprietary QlariFlow™ platform, mark the strongest performance to date for LiqTech's commercial pool segment. This surge in adoption highlights a growing trend among operators of public pools, wellness centers, and recreational water parks to move away from conventional filtration methods toward more advanced, automated, and space-efficient solutions.

The Shifting Tides of Pool Filtration

The commercial pool filtration market, valued at over USD 300 million in 2023 and projected to grow steadily, is facing a confluence of pressures. Stricter health regulations, rising energy costs, water scarcity concerns, and heightened public awareness of hygiene are compelling facility managers to rethink their operations. For decades, the industry has relied on established giants like Pentair, Hayward, and Fluidra, with sand and cartridge filters serving as the workhorses of water treatment.

Traditional sand filters, while cost-effective upfront, can be inefficient, typically filtering particles only down to 20-30 microns and requiring significant water for backwashing. Cartridge filters offer finer filtration but can demand more maintenance. While high-performance options like Diatomaceous Earth (DE) filters exist, they come with their own handling and disposal challenges.

This established landscape is now being disrupted by a new wave of technology. The market is seeing a distinct pivot towards eco-friendly and energy-efficient systems. Industry analysis points to a growing demand for advanced media, including ceramic composites, that promise superior contaminant capture, reduced chemical reliance, and significant resource savings. This is the precise niche LiqTech aims to capture with its ceramic membrane technology, positioning itself as an innovator in a field ripe for change.

A Technological Leap with Ceramic Membranes

At the heart of LiqTech's success is its QlariFlow™ system, which is built around the company’s patented Silicon Carbide (SiC) ceramic membranes. Unlike traditional media that traps particles in a porous bed, membrane filtration acts as an absolute physical barrier, offering a level of precision and reliability that conventional systems often struggle to match. This technology represents a fundamental departure from the status quo.

According to the company, the QlariFlow™ platform is engineered to deliver exceptionally stable and reliable water quality. The ceramic membranes provide a much finer degree of filtration than sand, capturing microscopic contaminants that can otherwise lead to cloudy water and the formation of harmful disinfection byproducts. This not only enhances bather safety and comfort but can also reduce the facility's reliance on chlorine and other chemical treatments.

Furthermore, the system is designed for a high degree of automation. This feature directly addresses a major pain point for facility operators: the high cost and complexity of manual labor. Automated operation helps maintain consistent water quality around the clock with minimal human intervention, reducing the risk of error and freeing up staff for other essential duties. This combination of superior water quality and operational efficiency is proving to be a powerful value proposition.

Solving Modern Problems for Aquatic Facilities

The practical advantages of LiqTech’s technology extend beyond water chemistry. One of the most significant challenges in modernizing aquatic facilities is the physical constraint of existing equipment rooms. Many pools, built decades ago, have limited space for upgrades. Retrofitting bulky new systems can be costly, disruptive, or simply impossible.

LiqTech's QlariFlow™ systems are designed with a compact and modular footprint, a key selling point highlighted by the company. This modularity allows for flexible installation configurations, making it a viable solution for both new construction and, critically, for retrofitting older facilities. An operator can install a system that fits their current space and scale it up later if demand increases. This addresses a crucial infrastructure challenge, enabling facilities to upgrade to modern standards without undertaking massive structural renovations.

“2025 was a breakthrough year for our commercial pool business,” said Fei Chen, CEO of LiqTech, in a recent press statement. “Customers and partners increasingly value filtration technologies that combine operational reliability, automation, and a compact footprint. As facilities prioritize water quality, automation, and space efficiency, QlariFlow™ is emerging as a compelling alternative to traditional filtration methods.”

With the 34 systems sold in 2025, LiqTech has now surpassed 150 total installations worldwide. This growing installed base provides the company with critical market validation and a foundation for future expansion. Each successful installation serves as a case study for a technology that promises not just cleaner water, but smarter, more sustainable, and more cost-effective facility management. As operators increasingly evaluate the total cost of ownership—including water, energy, chemical, and labor costs—over the system's lifecycle, the argument for investing in advanced filtration technology becomes ever more compelling.