Product Overview

The Pentair WhisperFlo VST Variable Speed Pool Pump, 2.6 HP | EC-011533 is a dependable, energy-efficient variable speed pump designed for residential in-ground pool circulation. Built on Pentair’s trusted WhisperFlo platform, this pump delivers strong hydraulic performance, quiet operation, and flexible speed control for everyday filtration, heating, cleaning, and circulation needs.

With 2.6 total horsepower, dual-voltage capability, a durable TEFC motor, and user-friendly programming, the WhisperFlo VST is a strong upgrade from older single-speed pumps and a practical replacement option for compatible existing WhisperFlo installations.

Ideal For

Residential in-ground swimming pools

Replacing compatible Pentair WhisperFlo pumps

Upgrading from single-speed or two-speed pool pumps

Pool systems needing more performance than a SuperFlo VST

Filtration, circulation, heating, and cleaning applications

Customers comparing EC-011533 and 011533 configurations

Key Features

2.6 THP variable speed pool pump

Dual-voltage design supports 115V or 208–230V installations

Energy-efficient performance with 8.4 WEF rating

TEFC motor for dependable durability

User-friendly onboard programming

2" suction and discharge ports

Designed as a drop-in replacement for compatible WhisperFlo pumps

Quiet operation at lower programmed speeds

Strong performance for standard residential pool systems

Built by Pentair for long-lasting pool equipment reliability

Benefits

The Pentair WhisperFlo VST EC-011533 gives pool owners the flexibility to run lower speeds for daily filtration and higher speeds when additional flow is needed. This can help reduce energy usage compared to traditional single-speed pumps while still providing strong circulation for normal pool operation.

Its WhisperFlo-style design makes it a good replacement option for many existing WhisperFlo installations, helping reduce plumbing changes when the application matches. The dual-voltage design gives installers flexibility, while the TEFC motor helps protect the pump in demanding outdoor equipment pad conditions.

Specifications

Warranty & Compatibility

Professional installation is recommended for proper electrical setup, plumbing connection, pump programming, and warranty compliance. Before ordering, confirm voltage, plumbing size, existing pump model, available equipment pad space, and whether your application requires the EC-011533 or standard 011533 version.

Customer-Facing Q&A

Q: What model number is this pump?
A: This listing is for the Pentair WhisperFlo VST model EC-011533.

Q: Is EC-011533 the same pump platform as 011533?
A: Yes. EC-011533 is the e-commerce version of the WhisperFlo VST 2.6 THP pump platform. Always confirm warranty terms and barcode before publishing or ordering.

Q: Is this a variable speed pump?
A: Yes. The EC-011533 is a variable speed pool pump designed for efficient residential pool circulation.

Q: What voltage does this pump use?
A: This pump supports 115V or 208–230V power.

Q: What is the horsepower rating?
A: The pump is rated at 2.6 THP.

Q: What size plumbing ports does it have?
A: This model has 2" suction and discharge ports.

Q: How much does the Pentair EC-011533 weigh?
A: The listed weight is approximately 45 lbs.

Q: Is this a good replacement for an older WhisperFlo pump?
A: Yes. It can be a strong replacement option for compatible existing WhisperFlo installations, but voltage, plumbing, and system requirements should be confirmed first.

Q: Should this pump be professionally installed?
A: Yes. Professional installation is recommended for safe electrical connection, correct programming, and warranty compliance.