Zero-Debris™ Dynamic Filtration

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SubZero™ hot tubs feature Zero-Debris™ Pressurized Filtration, a filtration system based on the same principles used in commercial pools and commercial hot tubs worldwide.

Unlike standard residential spa filtration, which relies on suction to pull water through a filter, pressurized filtration uses a dedicated, pressure-driven filtration process designed for consistent flow, thorough debris capture, and superior water clarity.

Pressurized filtration allows water to be pushed evenly through the filter media, resulting in:

• More uniform filtration
   
• Improved debris capture
   
• Reduced channeling and bypass
   
• Clearer water with less effort
   

This design delivers predictable, high-performance filtration regardless of filter loading—one of the key reasons it is the preferred standard in commercial aquatic environments.

Commercial pools and public hot tubs use pressurized filtration systems. This approach was also common in high-end residential hot tubs in the past.

Over time, many manufacturers moved away from pressurized filtration—not because it was inferior, but because it is more expensive to build. Pressurized systems require additional plumbing, reinforced filter housings, and more complex engineering.

SubZero™ chose not to compromise.

Zero-Debris™ Pressurized Filtration is designed for owners who value:

• Cleaner, clearer water
   
• More consistent filtration performance
   
• Reduced maintenance
   
• A system engineered for longevity, not cost cutting
   

It’s filtration built to professional standards—adapted for residential comfort.

 Zero-Debris™ Pressurized Filtration reflects SubZero’s philosophy: build hot tubs using proven engineering, durable materials, and performance-driven design choices—even when they cost more to manufacture.