By Hayward Pool Products



Part # W3PHS41CST

Warranty 2-Year

Alternate Part #'s HAYW3PHS41CST, HPPW3PHS41CST

Product Description

The AquaNaut® Series of automatic suction cleaners are designed with patented technologies to deliver a thorough and reliable clean for pools of different shapes, sizes, flow rates and debris types. Available in two or four wheel drive models, AquaNaut features patented self-adjusting variable vanes known as V-Flex™ technology. Because the variable vanes automatically adjust to allow for large debris to pass through the cleaner, V-Flex technology delivers maximum power even at lower flow and provides the peace of mind of clog-free cleaning – covering pool floor, walls* and coves.

AquaNaut 200 is a 2-wheel drive model designed for pools up to 16’ x 32’. AquaNaut 400 is a 4-wheel drive model designed for larger pools and pools with deep ends up to 20’ x 40’.

Handles large debris without clogging

  • Patented V-Flex™ variable vane turbine technology eliminates clogs and maximizes power at almost any flow.
  • Perfect for use with variable-speed pool pumps.

Expertly navigates any surface

  • Patented robust tire treads provide superior climbing power and obstacle maneuverability.

Maintains constant suction

  • Patented adjustable roller skirt maintains optimal suction on uneven surfaces.

End-to-end cleaning

  • Multiple pre-programmed steering sequences ensure complete pool coverage.

Optimal suction at almost any flow.

  • Three easily interchangeable throats improve debris passage and suction performance, making it ideal for use variable-speed pool pumps.



Product Specifications

Length of Hose:
40 ft.
Cleaner Type:
Pool Type:
In Ground
Pool Surface:
Pool Size:
Up to 40' Long

?     Asked on 5/10/2022by Inyo Visitor

Can this be left in the pool when not using. when the pump comes on auto it starts to work everyday

A  Answered on 5/10/2022 by InyoPools Product Specialist Craig C.

Hello.  The Hayward AquaNaut 400 Suction Pool Cleaner - W3PHS41CST can be left in the pool.  Whenever the pool pump is running, the cleaner will operate.  When the pool pump is idle, the cleaner does not function.

?     Asked on 6/21/2022by John Pickett

Can this be used on a above ground pool

A  Answered on 6/22/2022 by InyoPools Product Specialist Craig C.

Hello John.  The Hayward Pool Products AquaNaut 400 is compatible with Above Ground Pool Vinyl and Fiberglass surfaces.  Attached please find a link to the Hayward AquaNaut Series website.  Please note the section: Applications   AquaNaut® Series


Review Summary

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