Pentair WhisperFlo VST Variable Speed Pool Pump | EC-011533

Pentair WhisperFlo VST Variable Speed Pool Pump – EC-011533

High-efficiency Pentair WhisperFlo VST variable-speed pool pump (2.6 THP, WEF 8.4) for in-ground systems. SKU EC-011533.

Features

• Variable-speed motor for large energy savings versus single-speed models
• 2.6 THP total horsepower with ~1.64 HHP hydraulic output
• Weighted Energy Factor (WEF) 8.4 — ENERGY STAR® certified
• Dual voltage compatibility (115/208-230 V) for flexible installation
• TEFC motor and rugged construction built for pool environments
• Onboard programming with multiple speeds and override for system-specific use

Description

The Pentair WhisperFlo VST Variable Speed Pool Pump (EC-011533) delivers a dynamic combination of power, efficiency, and smart functionality. With a 2.6 THP variable-speed motor and WEF rating of 8.4, it meets the needs of modern in-ground pool systems seeking both strong flow capability and lower energy costs. Its drop-in compatibility with existing Pentair WhisperFlo infrastructure allows for straightforward upgrades. The TEFC motor and premium build ensure long-term durability, while the multi-speed programming adapts to filtration, heating, cleaning or spa demands.

Pro Tip

First program the pump’s lowest speed to meet your pool’s turnover requirement (filtration phase). Then use secondary speeds for cleaning or heating. By matching flow to task rather than always running high speed, you’ll realize significant energy savings. Consider complementing this pump with a variable-speed filter and integrating into your Pentair automation setup for full-system optimization.

Related Parts

• WhisperFlo VST Keypad/Programming Module
• WhisperFlo VST Seal Plate Kit
• Pentair RS-485 Automation Cable
• Pentair WhisperFlo VST Diffuser
• Pentair IntelliFloVSF/WhisperFlo VST Pump Diffuser O-Ring
• Pentair Seal Plate Gasket
• Pentair IntelliFloVSF/WhisperFlo VST Pump Impeller Set Screw 1/4-20 LH Thread
• WhisperFlo VST Impeller Washer for Set Screw
• Pentair WhisperFlo VST Shaft Seal - PS1000
• Pentair WhisperFlo VST Shaft Seal - Salt/Ozone resistant
• Pentair WhisperFlo VST Bolt - Motor/Seal Plate (4 Req)

Installation Tips

Mount the pump on a stable, vibration-isolated equipment pad. Ensure wiring meets NEC/local code and uses correct voltage. Minimize suction and discharge piping restrictions. Program the pump speeds according to your pool’s flow requirements rather than defaulting to max speed. Monitor initial wattage draw to confirm expected performance.

We want you to have quick and easy access to warranty information for all the brands we carry. Please click on the links below to view each manufacturer’s warranty page:

• Pentair Warranty
  
• A&A (Pentair In-Floor) Warranty
  
• Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
  
• Paramount Warranty
  
• BlueSquare Warranty
  
• Hayward Warranty
  
• All Other Manufacturer Warranties
  

Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.