Name: Grundfos 3.0 BAR home booster 240V MD300200
Brand: Grundfos
SKU: md300200
Price: 1785.6 GBP
Availability: InStock

Grundfos 3.0 BAR home booster 240V MD300200

Grundfos 3.0 BAR home booster 240V MD300200 - Image 2

In stock

Established 1975
Trusted by thousands of customers

The Grundfos Home Booster MD300200 is a best-selling, complete, self-contained cold water boosting set designed for domestic properties with insufficient mains pressure. A high-quality stainless steel pump delivers 3.0 bar nominal pressure, controlled by the PM2 Pressure Manager on/off controller. The set includes an integral 200-litre storage tank (180L useable) with a Type AB air gap, an 8-litre integral pressure vessel, and all WRAS-approved components. Designed and built in the UK.

The PM2 controller provides pressure, pump status, and fault indicators with a reset button, and protects the pump against dry-run, air-lock, and seizure. For homes with 3–4 occupants or a slow-filling mains supply, an optional 180-litre slave tank is available to increase storage capacity. Choose the MD450200 for 4.5 bar nominal pressure (suited to 4–5 occupants).

Suitable for 1–2 standard bathrooms with typical fittings. Arrives as a packaged unit ready for installation. Recommended for utility room or garage installation on a solid level base. Not suitable for loft or attic spaces.

3.0bar

Nominal

200L

Integrated tank

Pressure vessel

Built · WRAS

WRAS approved
UK manufactured
PM2 controller
Type AB air gap
Stainless steel pump
Slave tank available

Full Description

More about this product

Full Description

Product overview

The Grundfos 3.0 Bar Home Booster MD300200 is a self-contained cold water boosting system designed for domestic properties with low or inadequate mains pressure. It connects directly to the mains supply via a Type AB air gap — providing compliant backflow protection — and fills an integrated 200-litre storage tank from which the pump draws. No separate break tank is required.

The Grundfos PM2 Pressure Manager controller automatically starts and stops the pump on demand. An integrated 8-litre pressure vessel prevents short-cycling on small draw-offs. The system is suitable for properties with 1–2 bathrooms and typical household fittings.

Designed and built in the UK specifically for the domestic market, with a proven 10-year track record. Supplied as a complete packaged unit requiring only mains cold water supply, discharge pipe, overflow pipe, and electrical connections. Typically installed in a utility room or garage on a solid, level base. Not suitable for loft installation.

3.0^bar

Output pressure

200^L

Integrated tank

30^l/min

Flow @ 3.0 bar

8^L

Pressure vessel

WRAS approved — all wetted components

Key features

3.0 bar output pressure

Delivers 3.0 bar at 30 l/min — consistent whole-house pressure boosting for typical domestic properties. If you need higher pressure, see the 4.5 bar model.

Direct mains connection

Connects directly to mains via a Type AB air gap — providing compliant backflow protection without a separate break tank.

Integrated 200-litre tank

200-litre cold water storage tank (180L usable) with float valve. Fills from the mains and provides a buffer for peak demand periods.

PM2 Pressure Manager

Grundfos PM2 controller handles automatic start/stop, pressure and fault indication, dry-run protection, and anti-seize function.

Stainless steel pump

High-quality Grundfos stainless steel pump for high efficiency, sustained performance, long service life, and quiet operation.

8-litre pressure vessel

Integrated 8-litre pressure vessel maintains pressure on small draw-offs, preventing unnecessary pump starts and reducing wear.

WRAS approved components

All wetted components WRAS approved in accordance with Water Byelaws regulations.

UK built — ready to install

Designed and built in the UK for the domestic market. Supplied complete — connect mains supply, overflow, discharge pipe, and power.

Expandable storage

Optional 180-litre slave tank available for properties with 3–4 occupants or slow-filling mains, increasing total storage to 380 litres.

Typical applications

1–2 bathroom homes with low mains pressure

The ideal application — properties where mains pressure is insufficient for pressurised hot and cold water systems.

Unvented hot water cylinders

Provides the pressure required for unvented cylinders to operate safely and efficiently.

Combination boilers

Ensures combi boilers receive sufficient incoming pressure for hot water and heating.

Electric and mixer showers

Delivers reliable pressure to electric showers, mixer showers, and thermostatic valves.

Low mains flow rate

The storage tank fills during off-peak periods and provides a buffer for peak morning and evening demand.

Water Byelaws compliance

The Type AB air gap ensures full compliance with backflow protection requirements for direct mains boosting.

Technical specifications

Model / SKU	Grundfos Home Booster 3.0 Bar MD300200
Pump	Grundfos stainless steel — fixed speed
Nominal output pressure	3.0 bar at 0.5 l/s (30 l/min)
Tank capacity	200 litres (180 litres usable)
Pressure vessel	8 litres integrated
Controller	Grundfos PM2 Pressure Manager
Mains connection	Direct mains — Type AB air gap with float valve
Power supply	240V single phase
WRAS approved	Yes — all wetted components
Installation	Utility room or garage — solid level base; not suitable for loft installation
Suitable for	1–2 bathroom domestic properties
Price	£1,488.00 + VAT (£1,785.60 inc VAT)

!Not suitable for loft or attic installation. Must be on a solid, flat, level surface.

iNeed 4.5 bar? See the Grundfos Home Booster 4.5 Bar — same unit, higher pressure output.

How it compares

Three mains-connected booster systems available from Anglian Pumping Services — compared side by side.

Feature	Grundfos 3.0 Bar this product	WaterBoost Slimline 300 EXT	DAB Esybox + Esytank
Mains connection	Direct — Type AB air gap	Indirect — break tank fed	Indirect — break tank fed
Tank capacity	200L (180L usable)	300L	480L
Output pressure	3.0 bar	Up to 6.5 bar	Up to 6.5 bar
Flow rate	30 l/min @ 3.0 bar	80 l/min @ 3 bar	80 l/min @ 3 bar
Pump type	Fixed speed	Variable speed (DAB Esybox)	Variable speed (DAB Esybox)
WiFi / app	No	Yes — DAB H2D app	Yes — DAB H2D app
Voice control	No	Google & Alexa	Google & Alexa
Expandable tank	Yes — 180L slave tank	No	Yes — modular on 3 sides
WRAS	Yes — all components	Tank + pump WRAS	Pump WRAS only
Price (ex VAT)	£1,488.00	£1,019.00	£1,380.00

Which should I choose?
Grundfos Home Booster 3.0 — the only direct mains system here (Type AB air gap). Proven UK-built unit, compact all-in-one footprint, no WiFi or smart features. If you need 4.5 bar instead, the Grundfos 4.5 bar model is also available.
WaterBoost Slimline 300 EXT — best value. Larger 300L tank, variable speed DAB Esybox pump, 80 l/min flow rate, WiFi and voice control — at the lowest price of the three.
DAB Esybox + Esytank — largest storage (480L) and most expandable. Best for high-demand or slow-filling-mains properties. Same DAB Esybox pump performance as the Slimline.

Frequently asked questions

How much does it cost and how is it delivered?

£1,488.00 + VAT (£1,785.60 inc VAT). Please contact us via WhatsApp or phone for delivery timescales on this product.

Does it connect directly to the mains?

Yes — the mains supply connects directly to the unit. A Type AB air gap built into the tank inlet provides the backflow protection required under Water Byelaws regulations. No separate break tank is needed.

What is the difference between this and the 4.5 bar model?

The only difference is output pressure — the 3.0 bar model delivers 3.0 bar at 30 l/min, while the 4.5 bar model delivers 4.5 bar at the same flow rate. The tank size, PM2 controller, pressure vessel, WRAS status, and installation requirements are identical. For most 1–2 bathroom properties, 3.0 bar is sufficient. If you need higher pressure for a specific appliance or have very low incoming mains, choose the 4.5 bar model.

Is 200 litres of storage enough?

For a 1–2 bathroom property with a reasonable mains fill rate, 200 litres (180L usable) is typically sufficient. For 3–4 occupants or slow-filling mains, the optional 180-litre Grundfos slave tank can be added to bring total storage to 380 litres. For greater storage, the DAB Esybox with Esytank offers 480 litres.

What is the PM2 Pressure Manager?

The PM2 is Grundfos’s pressure controller. It automatically starts the pump when a tap is opened and stops it when demand ceases. It also provides LED indicators for pressure, pump status, and faults; dry-run protection (shuts down if the tank runs dry); a reset button; and an anti-seize function that exercises the pump if it has not run for an extended period.

Where can it be installed?

The Home Booster must be installed on a solid, flat, level base in a utility room or garage. It is not suitable for loft or attic installation. Connection requires mains cold water supply, discharge pipe, overflow pipe, and 240V electrical supply.

Is it suitable for a property with more than 2 bathrooms?

The Home Booster 3.0 is rated for 1–2 bathroom properties. For larger properties, the WaterBoost Slimline 300 EXT or DAB Esybox with Esytank deliver 80 l/min and are better suited to higher simultaneous demand. Contact us if you’re unsure.

What warranty is included?

Please contact us for current warranty details on the Grundfos Home Booster range.

Additional Information

The Grundfos Home Booster has been developed to provide a compact and cost-effective solution. It’s is self-contained and its neat size makes it ideal for a range of domestic installations where space is at a premium.

These self-contained cold water booster sets, has been specifically designed for domestic properties where the existing mains water supply is insufficient to meet the demand requirements of pressurised hot and cold water systems. The Home Booster is suitable for most domestic properties with one or two standard bathrooms with standard fittings, or en-suite, and cloakroom, plus other normal household appliances.

Designed and developed by Grundfos Pumps specifically to meet the demands of the UK market, these Home Booster units are built in the UK and they have proven themselves in the field for the past 10 years.

Another important plus is that installation is straight forward – just requiring connection of mains cold water supply, discharge pipe, overflow pipe and electrical connections. Sets are typically installed in a utility room or a garage. For larger properties, there are a range of alternatives that could be considered including the Grundfos Max-E Boost.

With the increasing demand for water to meet a range of demands, many households are looking to get a boost to their water supply demands and the Grundfos Home Booster can deliver it.

Downloads

brochure PDF
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manual PDF
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Delivery Information

Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.

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 £16.50 + 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.

Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.

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