Grundfos SCALA2 3-45-1 Water Booster Pump (115V, 60Hz) – 93013251

The Grundfos SCALA2 3-45-1 (93013251) is a premium, fully integrated smart water pressure booster pump designed to deliver perfect, consistent water pressure throughout your home. Whether you’re running multiple showers, faucets, or appliances at the same time, SCALA2 ensures steady pressure without the annoying drops common in standard systems.

This unit combines everything needed into one compact booster system, including the pump, motor, pressure tank, intelligent sensor, variable-speed drive, and a built-in non-return valve. Its intelligent control system continuously monitors the discharge pressure and automatically increases pump performance when it detects pressure loss, keeping water flow smooth and constant.

SCALA2 is also designed for comfort and convenience. It runs extremely quietly, with typical noise levels around 47 dB(A) and updated improvements further reducing noise and increasing energy efficiency and durability.

Key Features

• Perfect constant water pressure at every tap, even with multiple outlets running

• All-in-one compact booster system with pump, motor, tank, sensor, drive, and check valve built in

• Intelligent pump control automatically adjusts output based on usage and inlet pressure

• Ultra-quiet operation: as quiet as a modern dishwasher (47 dB(A) typical use)

• Easy “one model fits most homes” selection

• Plug-and-pump installation for quick setup

• User-friendly control panel for simple operation

• Dry-running protection and anti-cycling for safe, reliable performance

• Maintenance-free design with long service life

• High-efficiency ECM motor for improved energy savings

• Self-priming and suitable for indoor or outdoor installations

Important Note

Hand-tighten water connections only to help prevent damage to fittings or housing.

Updated Improvements (Important Changes)

• Noise reduced down to 44 dB(A)

• Updated hydraulic design for:

  • Increased energy efficiency

  • Improved durability and overall product quality

Specifications

Performance

• Max Pressure: 87 PSI

• Max Flow Rate: 21 GPM

Temperature

• Ambient Temperature Range: Up to 131°F (55°C)

• Max Liquid Temperature: Up to 113°F (45°C)

Connections

• Inlet Connection: 1”

• Outlet Connection: 1”

Series

• Grundfos Series: SCALA

Dimensions & Weight

Shipping Dimensions

• Shipping Length: 17.5 in

• Shipping Width: 10 in

• Shipping Height: 14.5 in

Product Weight

• Weight: 22 lbs