The Hayward W3PHS41CST AquaNaut 400 Automatic Suction Pool Cleaner is a high-performance 4-wheel drive cleaner designed for large in-ground pools up to 20' x 40'. Featuring patented self-adjusting variable vanes, multiple pre-programmed steering sequences, and robust tires with enhanced climbing ability, it delivers thorough cleaning and reliable coverage across all types of pool surfaces.

Key Features

• 4-wheel drive system for maximum stability and traction in larger pools

• Designed for in-ground pools up to 20' x 40' in size

• Patented V-Flex™ variable vane turbine technology maintains power even with larger debris

• Multiple pre-programmed steering sequences for complete pool coverage

• Rugged tire treads for improved climbing and obstacle navigation

• Adjustable roller skirts maintain consistent suction on uneven surfaces

• Wide suction inlet for enhanced debris intake

• Compatible with variable-speed pumps and lower flow rates

• Durable construction for long-lasting performance

• Installs easily into existing suction ports or skimmer lines

Product Overview

The Hayward W3PHS41CST AquaNaut 400 Automatic Suction Pool Cleaner combines power, stability, and efficiency to clean large in-ground pools with ease. Its 4-wheel drive design ensures strong traction and full pool coverage, while the patented V-Flex™ variable vane turbine technology keeps suction at peak performance—even when tackling larger debris. Multiple pre-programmed steering sequences guide the cleaner across floors, walls, and coves, while rugged tires and adjustable roller skirts allow it to navigate over obstacles and maintain contact on uneven surfaces. Easy to install and maintain, the AquaNaut 400 is the perfect choice for pool owners seeking a dependable, high-coverage suction cleaner.