Grundfos SCALA 1 and 2: Pressure Pumps and Pressurization

Grundfos Scala pumps

Grundfos SCALA Pressure Pumps (Series 1 and 2)

The compact "All in One" solution for home water pressure

The Grundfos SCALA family of pumps represents the evolution of the classic booster pump. Forget the old, noisy systems consisting of a pump, pressure switch, and large expansion vessel: the SCALA series integrates all these components into a single, compact, and elegant box.

Ideal for:

Increase domestic pressure: For powerful shower jets even on upper floors.
Garden irrigation: For drawing water from wells or cisterns (up to 8 metres deep).
Quiet: Designed to be the quietest autoclaves on the market.

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There are 4 products.

-45%

Self-priming pump Grundfos SCALA1 3-35 – Code 99530404

Available

Compact pressure booster system for domestic and light commercial applications
The Grundfos SCALA1 3-35 is a fully integrated, multi-stage, self-priming pump designed to boost water pressure in single- and two-family homes, as well as light commercial applications such as garden irrigation. Featuring a quiet motor and Bluetooth connectivity, it offers customised control via the Grundfos GO app.

€449.71

€817.65

-43%

Self-priming pump Grundfos SCALA1 3-45 – Code 99530405

Available

Compact pressurization system for domestic and light commercial applications
The Grundfos SCALA1 3-45 is a fully integrated, multi-stage, self-priming pump designed to boost water pressure in single- and two-family homes, as well as light commercial applications such as garden irrigation. Featuring a quiet motor and Bluetooth connectivity, it offers customised control via the Grundfos GO Remote app.

€490.31

€860.20

-41%

Self-priming pump Grundfos SCALA1 5-55 – Code 99530407

Available

Grundfos SCALA1 5-55 domestic pressurization system
The Grundfos SCALA1 5-55 is a compact, integrated self-priming pump, ideal for boosting water pressure in domestic and light commercial applications.

€609.29

€1,032.70

-30%

Grundfos SCALA2 self-priming pump 3-45 A – Code 93013252

Available

Grundfos SCALA2 3-45 domestic pressure booster system
The Grundfos SCALA2 3-45 A is a compact, integrated self-priming pump, ideal for ensuring constant water pressure in domestic applications. Equipped with intelligent speed control, it automatically adapts performance to demand, ensuring efficiency and silence.

€819.49

€1,170.70

Buying Guide: Which is Better, SCALA1 or SCALA2?

At first glance, they look identical, but the technological core is different. Choosing the right one depends on your comfort needs and budget.

Grundfos SCALA2: Total Comfort (Inverter)

This is the top-of-the-range model. Its key feature is the Intelligent Inverter which guarantees perfect constant pressure .

How it works: If you open one faucet, the pump turns slowly. If you open three faucets, the pump speeds up. The result? The water always comes out with the same force, without any sudden changes (no more cold or weak showers when someone flushes the toilet).
Noise: Water-cooled (no fan). It's as quiet as a modern dishwasher (47 dB). Ideal for indoor installation (under the sink, closet).

Grundfos SCALA1: The Smart Autoclave (On/Off)

It is the evolution of the classic autoclave pump, but with an electronic brain and Bluetooth .

How it works: It has an on/off mode (turns on at full power, turns off when you close it). The pressure may vary slightly depending on how much water you ask for.
Smart functions: Using the Grundfos GO App, you can set an irrigation schedule or pair two pumps together (Twin configuration) for large flow rates.
Noise: Air-cooled (with a fan). It's quiet (55 dB), but it's a little louder than the SCALA2. Ideal for garages, outdoor utility rooms, or gardens.

🏆 Expert advice

Want the perfect shower at home and need to install the pump inside your apartment? Choose SCALA2 .

Need to water your garden, draw water from a well, or install a pump in your garage where the gentle hum won't disturb you? Save money and choose SCALA1 .

Frequently Asked Questions (FAQ)

Are they self-priming pumps?

Yes, both are self-priming. They can draw water from tanks or wells up to 8 meters deep in less than 5 minutes. Just remember to fill the pump body with water (using the appropriate cap) before using it for the first time.

Is an external expansion vessel needed?

Generally, no. SCALA boilers have a small built-in expansion tank to handle small leaks (drips). However, if you have leaks in the system or want to reduce frequent starts, you can install a small external 8-24 liter tank on the flow line.

Does the pump stop if the tank runs out of water?

Yes, both are equipped with dry-running protection. If the tank empties or the mains water supply shuts off, the pump stops and automatically tries to restart after a while, preventing the motor from burning out.

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Grundfos SCALA Pressure Pumps (Series 1 and 2)

The compact "All in One" solution for home water pressure

Buying Guide: Which is Better, SCALA1 or SCALA2?

Grundfos SCALA2: Total Comfort (Inverter)

Grundfos SCALA1: The Smart Autoclave (On/Off)

🏆 Expert advice

Frequently Asked Questions (FAQ)

Are they self-priming pumps?

Is an external expansion vessel needed?

Does the pump stop if the tank runs out of water?

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