Grundfos Scala2 3-45 98562865 | Variable Speed Booster Pump

Grundfos Scala2 3-45 230v 98562865 - Image 2

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Grundfos Scala2 3-45 230v 98562865 - Image 5

Grundfos Scala2 3-45 230v 98562865 - Image 6

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

Full Description

More about this product

Full Description

Product overview

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.

70^l/min

Max flow rate

45^m

Max head

47^dB

Typical noise

2^yr

Warranty

Requires break tank — cannot connect to mains directly

Key features

Intelligent variable speed

Continuously adjusts speed to match demand — constant pressure at every tap and shower, even with multiple outlets open simultaneously.

47 dB(A) — ultra quiet

Water-cooled permanent magnet motor. Model 2 is 3 dB(A) quieter than its predecessor. 53 dB(A) max at full load.

Fully integrated all-in-one

Pump, motor, inverter, sensors, integrated tank, and non-return valves all in one unit. No additional components required.

Flexible installation

Can be installed horizontally or vertically, indoors or outdoors. Compact footprint suits utility rooms, garages, cupboards, and outdoor enclosures.

Self-priming to 8m

Self-primes from a water source up to 8 metres below the pump in under 5 minutes. Suitable for break tanks, wells, and boreholes.

Dry-run and auto-reset protection

Stops automatically on dry running, overtemperature, or overload. Auto-restarts every 5 minutes up to 8 times, then every 24 hours.

3-step installation

Connect the pipes, prime the pump, plug in. No specialist setup required — the pump configures itself on first run.

Integrated pressure tank

Built-in pressure tank reduces pump starts on small draw-offs, reducing wear and extending service life.

2-year Grundfos warranty

2-year manufacturer warranty when purchased from Anglian Pumping Services.

Typical applications

Break tank systems

Draws from a cold water storage cistern or break tank — the ideal configuration for the Scala2.

Boreholes and wells

Self-priming to 8m — draws from a below-ground borehole, well, or underground tank without separate priming.

Whole-house pressure boosting

Delivers consistent pressure throughout the property — taps, showers, and appliances running simultaneously.

Electric and mixer showers

Consistent pressure to showers and thermostatic valves.

Combination boilers

Ensures adequate incoming pressure for combi boiler hot water and heating performance.

Outdoor installations

One of the few domestic booster pumps rated for outdoor use — suitable for outbuildings, plant rooms, and sheltered external locations.

Technical specifications

Model / SKU	Grundfos Scala2 3-45 / 98562865
Pump type	Variable speed — permanent magnet motor, water-cooled
Max flow rate	70 litres per minute
Max head	45 metres
Noise level (typical)	47 dB(A) typical — 53 dB(A) max at full load
Mains connection	Cannot connect directly to mains — requires break tank or cistern
Self-priming depth	Up to 8 metres
Installation orientation	Horizontal or vertical
Installation location	Indoor or outdoor
Power supply	230V single phase
WiFi / app	No
WRAS approved	Yes
Warranty	2 years (Grundfos manufacturer warranty)
Price	£422.48 + VAT (£506.98 inc VAT)

!The Scala2 cannot connect directly to the mains supply. It must draw from a cold water storage cistern, break tank, or other below-pump water source.

Scala2 vs DAB Esybox Mini 3

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.

Grundfos

Scala2 3-45

£422.48 + VAT

£506.98 inc VAT

70 l/min max flow

45m max head

47 dB(A) typical

Horizontal or vertical

Indoor or outdoor

Cannot connect to mains directly

No WiFi or app

2-year warranty

DAB Esybox

Esybox Mini 3

£369 + VAT

£442.80 inc VAT

80 l/min max flow

55m max head

45 dB(A) noise

Horizontal or vertical

Indoor installation only

Cannot connect to mains directly

WiFi — DConnect app, Google Home, Alexa

3-year warranty

Feature	Scala2 3-45 this product	DAB Esybox Mini 3
Mains connection	Break tank required	Break tank required
Max flow rate	70 l/min	80 l/min
Max head	45m	55m
Noise (typical)	47 dB(A)	45 dB(A)
Installation orientation	Horizontal or vertical	Horizontal or vertical
Outdoor installation	Yes	No — indoor only
WiFi / app	No	Yes — DConnect, Google, Alexa
Max working pressure	~4.5 bar	5.5 bar
Self-priming depth	8m	8m
WRAS approved	Yes	Yes
Warranty	2 years	3 years
Price (ex VAT)	£422.48	£369.00

Which should I choose?
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).

Frequently asked questions

How much does it cost and how is it delivered?

£422.48 + VAT (£506.98 inc VAT). Standard delivery is free, including next working day when ordered before 12 noon on a working day. In stock and ready to dispatch.

Can it connect directly to the mains?

No — the Scala2 cannot connect directly to the mains supply. It must draw from a cold water storage cistern, break tank, or other below-pump water source. If you need a direct mains inline booster, consider the DAB Esybox Mini 3 instead.

What is the difference between the Scala2 and the DAB Esybox Mini 3?

The most important difference is mains connection — the Esybox Mini 3 connects directly to the mains; the Scala2 does not and requires a break tank. Beyond that: the Esybox Mini 3 has higher flow (80 vs 70 l/min), higher head (55 vs 45m), higher max working pressure (7.5 vs ~4.5 bar), WiFi and voice control, a longer 3-year warranty, and a lower price (£369 vs £422.48 + VAT). The Scala2 wins on installation flexibility — it can be installed horizontally or vertically, and indoors or outdoors — making it the better choice where a break tank is already in place and space or orientation is constrained.

Can it be installed outside?

Yes — unlike most domestic booster pumps, the Scala2 is suitable for outdoor as well as indoor installation. It can also be mounted horizontally or vertically, making it one of the most flexible booster pumps available in terms of placement.

Is it suitable for use with a borehole or well?

Yes — the Scala2 is self-priming to 8 metres and can draw from a borehole, well, underground tank, or break tank. It will prime itself from a source up to 8m below in under 5 minutes (provided it is filled with water first). This makes it well suited to rural or off-grid properties with private water supplies.

What happens if the pump runs dry?

The Scala2 stops automatically if it detects dry running, water shortage, excessive temperature, a blocked pump, or overload. It then attempts to restart every 5 minutes, up to 8 times, before switching to a 24-hour retry cycle. The auto-reset function can be deactivated.

Does it have WiFi?

No — the Scala2 operates as a standalone unit with no WiFi connectivity. If WiFi monitoring, remote control, or voice control (Google Home / Alexa) are important, consider the DAB Esybox Mini 3.

What warranty is included?

2 years manufacturer warranty from Grundfos when purchased from Anglian Pumping Services.

Downloads

data sheet PDF
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Tech Sheet PDF
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Delivery Information

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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