Grundfos Scala Home Booster Pumps
Grundfos Scala2 3-45 230v 98562865
In stock
- Established 1975
- Trusted by thousands of customers
The Grundfos Scala2 3-45 is a fully integrated variable speed booster pump delivering constant pressure to every outlet in your home. All components — pump, motor, drive, sensors, tank, and non-return valve — are built into a single compact unit. Cannot connect directly to mains — requires a break tank. Backed by a 2-year Grundfos warranty.
- Variable speed — constant pressure — automatically adjusts to match demand; 70 l/min max flow, 45m head
- Requires break tank — cannot connect directly to mains; self-priming to 8m from below-pump sources
- 47 dB(A) typical noise — water-cooled permanent magnet motor; suitable for indoor and outdoor use
- Flexible installation — horizontal or vertical; indoor or outdoor
- Dry-run and auto-reset protection — stops automatically on fault; retries every 5 minutes
- Fully integrated all-in-one — pump, motor, drive, sensors, tank, and non-return valves; 3-step installation
- Free standard delivery — next working day when ordered before 12 noon

More about this product
The Grundfos Scala2 3-45 is a fully integrated variable speed booster pump. All components — pump, motor, inverter drive, pressure and flow sensors, integrated tank, and non-return valves — are built into a single compact unit. Installation is a three-step process: connect the pipes, prime, and plug in.
The intelligent speed controller continuously adjusts pump speed to match household demand, maintaining constant pressure at every outlet even when multiple taps and showers run simultaneously. The water-cooled permanent magnet motor delivers 47 dB(A) typical noise — one of the quietest domestic booster pumps available. The Model 2 is 3 dB(A) quieter than its predecessor.
The Scala2 cannot connect directly to the mains — it must draw from a break tank or below-pump water source. It is self-priming to 8 metres. Suitable for horizontal or vertical installation, indoors or outdoors. Backed by a 2-year Grundfos warranty.
Two of the most popular compact variable speed booster pumps at similar price points — compared side by side. Note: only the Esybox Mini 3 can connect directly to the mains.
Scala2 — choose this if you have a break tank or borehole/well already in place, need outdoor installation, and installation flexibility (horizontal or vertical) is important. Good fit for rural properties and non-mains water sources.
Esybox Mini 3 — choose this if you want direct mains connection (no break tank needed), higher flow (80 l/min), higher head (55m), higher max pressure (5.5 bar), WiFi and voice control, and a longer 3-year warranty — at a lower price (£369 vs £422.48 + VAT).
How much does it cost and how is it delivered?
Can it connect directly to the mains?
What is the difference between the Scala2 and the DAB Esybox Mini 3?
Can it be installed outside?
Is it suitable for use with a borehole or well?
What happens if the pump runs dry?
Does it have WiFi?
What warranty is included?
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data sheet PDFDownload
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Tech Sheet PDFDownload
Standard delivery:
Standard delivery is free for all orders except for some low cost/low margin items where standard delivery is £6.75. Some difficult to transport goods also have a varying carriage charge applied.
Please contact us for the estimated standard delivery times of the products that we have in stock, by dropping us a message on our Whatsapp or Live chat.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £15.00 + vat delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
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