WhisperFlo® VST Variable Speed Pump

Key Benefits + Fitment

• Brand: Pentair
• Product: WhisperFlo VST Variable Speed Pool Pump
• SKU / MPN: 011533 / 11533
• Total Horsepower: 2.60 THP
• WEF Rating: 8.4
• Voltage: 115/208–230V
• Designed as a variable speed replacement pump for many existing Pentair WhisperFlo pump installations
• Built with a totally enclosed fan-cooled motor for durability in pool equipment environments
• User-friendly programming helps pool owners select the right operating speed for circulation, cleaning, and efficiency
• Best suited for in-ground residential pool systems where proper sizing and plumbing compatibility are confirmed
• Professional installation is recommended for electrical, plumbing, and equipment-pad replacement work

Quick Product Summary

The Pentair WhisperFlo VST Variable Speed Pump 011533 is a high-performance variable speed pool pump designed to deliver dependable circulation, strong hydraulic performance, and improved energy efficiency compared to traditional single-speed pumps. Built as a strong replacement option for many existing WhisperFlo installations, this pump gives pool owners better control over pump speed, daily run time, and system performance while maintaining the durability Pentair WhisperFlo pumps are known for.

Best For

• Replacing an older Pentair WhisperFlo pump
• Upgrading from a single-speed pool pump to variable speed operation
• In-ground residential pool circulation systems
• Pool owners who want better speed control and energy-saving operation
• Systems that need more performance than a smaller variable speed pump
• Equipment pads where pump sizing, voltage, and plumbing compatibility have been verified

Why This Matters

• Helps reduce energy use by allowing the pump to run at lower speeds when full power is not needed
• Restores reliable pool circulation when an older pump is loud, inefficient, or failing
• Supports better filtration by allowing longer, lower-speed circulation cycles when programmed properly
• Reduces strain on pool equipment compared with running a single-speed pump at full speed all day
• Helps maintain pool water clarity by supporting consistent water movement through the filter system
• Provides stronger performance than the Pentair SuperFlo VST for applications that require more pump capacity
• Helps avoid unnecessary service problems when replacing a worn pump with a properly matched model
• Supports pool cleaning, heating, sanitizing, and circulation performance when installed and programmed correctly

Common Signs You Need This / Use This When

• Your current pool pump is loud, aging, or inefficient
• Your single-speed pump runs at full speed all day and uses more energy than necessary
• Your existing WhisperFlo pump needs replacement and you want a variable speed upgrade
• Your pool circulation is inconsistent due to an aging or failing pump
• Your equipment system needs better speed control for filtration, cleaning, heating, or water features
• You want a durable Pentair variable speed pump with onboard programming
• Your pool professional has confirmed that this pump matches your plumbing, voltage, and hydraulic needs

Product Specifications

Compatibility / Fitment Notes

The Pentair WhisperFlo VST Variable Speed Pump is described by Pentair as a superior drop-in replacement for existing Pentair WhisperFlo pumps, making it a strong option when upgrading an older WhisperFlo system to variable speed performance. It is also positioned as a more powerful option than the Pentair SuperFlo VST pump.

Before ordering, confirm your existing pump model, voltage, plumbing size, equipment-pad layout, automation needs, and hydraulic requirements. Do not assume this pump is correct for every pool system. Pump sizing should be based on pool volume, plumbing design, filter capacity, cleaner type, heater requirements, water features, and local electrical code.

Installation / Use Notes

Professional installation is strongly recommended for the Pentair WhisperFlo VST because pool pump replacement involves electrical wiring, plumbing connections, priming, bonding, and system programming. Always verify that the pump voltage, breaker, wire size, plumbing layout, and system requirements match the installation before replacing an existing pump.

After installation, the pump should be programmed for the pool’s actual circulation needs. Variable speed pumps perform best when speeds and schedules are set for filtration, cleaning, heating, and sanitizer operation instead of simply running at full speed all day.

Buy with Confidence

Buy the Pentair WhisperFlo VST Variable Speed Pump from Benchmark Pool Supply with confidence. Our team understands pool equipment from a service-tech perspective, which means we focus on helping customers choose the correct pump, match the right replacement, and avoid costly wrong-part orders.

For pumps, details matter. Voltage, plumbing layout, horsepower, equipment compatibility, and installation requirements should all be confirmed before purchase. Benchmark Pool Supply helps customers make a more informed decision before replacing major pool equipment.