SKU: 15039672934

Grundfos SCALA1 5-55 Booster Pump

Sale price$491.40 Regular price$546.00
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Description

Grundfos SCALA1 5-55 Booster PumpThe Grundfos SCALA1 555 is a highperformance, allinone, selfpriming booster pump designed to deliver strong, reliable water pressure for domestic and lightcommercial applications. With powerful boosting capability, quiet operation, and smart connectivity, the SCALA1 555 ensures consistent water supply wherever you need it. HighPerformance Water Boosting Built to handle more demanding installations, the SCALA1 555 offers: Maximum head up to 182 ft (55

The Grundfos SCALA1 5‑55 is a high‑performance, all‑in‑one, self‑priming booster pump designed to deliver strong, reliable water pressure for domestic and light‑commercial applications. With powerful boosting capability, quiet operation, and smart connectivity, the SCALA1 5‑55 ensures consistent water supply wherever you need it.

High‑Performance Water Boosting

Built to handle more demanding installations, the SCALA1 5‑55 offers:

  • Maximum head up to 182 ft (55 m) for high‑pressure delivery
  • Nominal flow of 23.3 US GPM (5.3 m³/h) for strong, steady water output

This makes it ideal for larger homes, multi‑tap use, and light commercial setups.

Product Number: 99631754

Features and Benefits

All‑In‑One Design

The pump combines all essential components into a single compact unit, including:

  • Electric motor
  • Diaphragm pressure tank
  • Pressure and flow sensors
  • Controller and non‑return valve
  • Dry‑running protection

This streamlined design minimizes installation time and eliminates the need for external accessories.

Smart Connectivity & Control

With built‑in Bluetooth® technology, SCALA1 5‑55 connects directly to the Grundfos GO app, allowing you to:

  • Configure advanced settings
  • Monitor real‑time performance
  • Diagnose alarms
  • Create and share pump reports

The pump can be fully customized for different water‑supply setups with simple, intuitive controls.

Fast, Easy Installation

SCALA1 pumps are designed for simple 3‑step setup—connect the pipework, prime the pump, plug it in—and the system is ready to run. Advanced adjustments can be handled via the app for tailored performance.

Low‑Noise Operation

Operating at under 55 dB(A)—similar to a modern dishwasher—the SCALA1 5‑55 is quiet enough for installation in or near living spaces.

Rugged and Reliable

  • Indoor/outdoor rating: IPX4D, suitable for most environments
  • Max liquid temperature: 113°F (45°C)
  • Max ambient temperature: 131°F (55°C)
  • Maximum system pressure: 115 psi (8 bar)

 

Twin‑Pump Capable

For installations requiring additional flow or redundancy, the SCALA1 5‑55 can be paired with another pump using the SCALA1 Twin Accessory Kit, enabling duty/assist or duty/standby operation.

Specifications

Technical

Rated flow 22 US gpm
Rated head 101.7 ft
Maximum head 180.5 ft
Primary shaft seal BVBP
Approvals CSA,cULus,CCSAUS,CSA LLC,PROP6
Approvals for drinking water CSA DW
Start pressure 40.61 psi

Materials

Pump housing Composite
Impeller Composite

Installation

Range of ambient temperature 32 .. 131 °F
Maximum operating pressure 116.03 psi
Maximum permissible inlet pressure 29.01 psi
Type of inlet connection NPT(M)
Type of outlet connection NPT(M)
Size of suction port 1 inch
Size of outlet port 1 inch
Pressure rating for connection PN 8

Liquid

Pumped liquid Water
Liquid temperature range 32 .. 113 °F
Selected liquid temperature 68 °F
Density 62.29 lb/ft³

Electrical data

Max. P1 1250 W
Rated power - P2  1.15 HP
Main frequency 60 Hz
Rated voltage 1 x 115 V
Rated current 11.6 A
Enclosure class (IEC 34-5) X4D
Insulation class (IEC 85) F
Length of power cable 4.92 ft
Power plug Type B (NEMA 5-15), US plug 115V

Others

Net weight 30.9 lb
Gross weight 35.3 lb
Shipping volume 1.62 ft³
Storage temperature range -40 .. 158 °F


Downloads

SCALA Data Booklet

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 15039672934

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Justin
New York, US
★★★★★ 4
Demon does an Anthony Bordain
Format: Paperback
Simple, fun read.
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Reviewed in the United States on November 13, 2024
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G. Hodnett
Carnegie, US
★★★★★ 3
Your milage will vary
Format: Paperback
Some great ideas in this story but it didn't really work for me. But I know others have loved it..
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Reviewed in the United States on November 14, 2025
J
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Joanne Hale
Lexington, US
★★★★★ 2
The hype it did not live up to
Format: Paperback
I guess I expected more. I found it kind of boring and un inspiring. I enjoyed the food twist and even the characters, but it was very underwhelming. and I'm sorry about this review, because I really really wanted to love it.
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Reviewed in the United States on March 30, 2025
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John J. Shea
Houston, US
★★★★★ 5
A thoroughly-researched, thoughtful, and nuanced work about the 1692 Salem withcraft panic.
Format: Paperback
This graphic novel recounts the 1692 Salem (Massachusetts) witchcraft panic that engulfed Salem, Salem Village (now Danvers), and adjacent communities. About two dozen men and women were convicted and hanged, one was pressed to death (tortured) to try to force him to acknowledge the Court’s authority. That man was Giles Corey, aged 80. The book focuses on him, but it covers others among the accused and executed as well as on the judges, politicians, and other involved. (No so much on the accusers and their motives.). The narrative plays out chronologically with interstitial vignettes in which 19th Century literary figures Nathaniel Hawthorne and Henry Wadsworth Longfellow wander around Salem during the 1800s discussing the trials and their legacy. (Hawthorne lived in Salem for a time and was a descendant or the Court of Oyer and Terminer Judge Hathorne.). The work concludes with a chapter, More Wonders of the Invisible World, that follows how Salem developed economically up to the present day in which witchcraft-related Halloween tourism turns Salem town into arguably the least attractive “tourist attraction” on Cape Ann. (Do not skip this chapter, it is engrossing.) An extensive series of endnotes provide scholarly references and background information. The artwork veers back and forth between caricatures (the 17th century events) and realism (19th century and onwards). In both cases the line art is exquisite. The text includes quotes from transcripts of the trials and other contemporary documents as well as fictional dialog. Wickey worked on this book for more than a decade, and it shows in his thorough scholarship. This is, in all seriousness, Pulitzer/Eisner-level work. Wickey was born in Beverly and resides on Cape Ann. Most of us born and raised on the “North Shore” learn about the Salem witchcraft panic in high school -often as a cautionary tale about politics, spectral evidence, and what we would today call “lawfare.” I thought I knew a fair amount about the 1692 panic, but I learned something new with nearly every other page. I was especially glad to see Wickey cover now-debunked ergot-poisoning theory and that he dismissed the vile slander that some among the convicted and executed were actually witches. There’s nothing really “missing” from the book, though one wishes one could learn more about the fates of the accusers other than Ann Putnam. That their motives appear to have been “sport” is bone-chilling fully three centuries later. Read her "apology" years later and try not to think, "psychopath." At 500 plus pages, it's too long to read at one setting, but it is a pleasure to read at shorter intervals.
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Reviewed in the United States on December 26, 2025
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Salvatore P. Vasta
San Leandro, US
★★★★★ 5
Masterpiece
Format: Kindle
It has been said that any work of literature should be gauged upon how much the work makes the reader think. Ben Wickey has certainly achieved this - in spades - as one of the “civilised” world’s most frightening episodes is revisited with respect and thoughtfulness on the human condition.
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Reviewed in the United States on January 12, 2026

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