Grundfos Home Booster
Grundfos 4.5 BAR Home Booster 240V MD450200
- Established 1975
- Trusted by thousands of customers
The Grundfos Home Booster MD450200 is a best-selling, complete, self-contained cold water boosting set designed for domestic properties with low mains pressure. A high-quality stainless steel pump delivers 4.5 bar nominal pressure (up to 5.6 bar maximum), 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. The 8-litre pressure vessel maintains pressure between pump cycles to prevent unnecessary motor starts. For homes with 4–5 occupants or a slow-filling mains supply, an optional 180-litre slave tank is available to increase storage capacity.
Suitable for 1–2 standard bathrooms with typical fittings. Arrives as a packaged unit ready for installation — mains cold water connection, overflow, discharge pipe, and electrical supply required. Recommended for utility room or garage installation on a solid level base.
UK manufactured
PM2 controller
Type AB air gap
Stainless steel pump
Slave tank available
More about this product
The Grundfos 4.5 Bar Home Booster MD450200 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 — which provides 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. Installation requires only connection of mains cold water supply, discharge pipe, overflow pipe, and electrical supply. Typically installed in a utility room or garage on a solid, level base.
Three mains-connected booster systems available from Anglian Pumping Services — compared side by side.
Grundfos Home Booster 4.5 — the only system here that connects directly to the mains (via Type AB air gap). Best if high output pressure (4.5 bar) is the priority and you have a 1–2 bathroom property. Proven UK-built design with no need for a separate break tank. No WiFi or smart features.
WaterBoost Slimline 300 EXT — best value with a larger 300L tank, variable speed DAB Esybox pump, higher flow rate (80 l/min), WiFi and voice control — at the lowest price of the three.
DAB Esybox + Esytank — largest storage (480L), most expandable, same DAB Esybox pump performance. Best for high-demand properties or slow-filling mains supply.
How much does it cost and how is it delivered?
Does it connect directly to the mains?
Is 200 litres of storage enough?
What is the PM2 Pressure Manager?
What is the difference between this and a variable speed system?
Where can it be installed?
Is it suitable for a larger property?
What warranty is included?
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.
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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Frequently Asked Questions
Quick answers to common questions about the Grundfos 4.5 BAR Home Booster 240V MD450200. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What is the Grundfos Home Booster MD450200?
The Grundfos Home Booster MD450200 is a self-contained cold water boosting set for domestic properties with low mains pressure. A stainless steel pump delivers 4.5 bar nominal pressure controlled by the PM2 Pressure Manager. The set includes a 200 litre integrated tank with Type AB air gap, an 8 litre pressure vessel and all WRAS approved components. It is designed and built in the UK.
How much flow does the Grundfos Home Booster 4.5 bar deliver?
The Grundfos Home Booster MD450200 delivers 30 litres per minute at 4.5 bar nominal pressure. Maximum working pressure is 5.6 bar. The integrated 8 litre pressure vessel maintains pressure between cycles so the pump does not short-cycle on small draw-offs.
What is a mains pressure boosting system?
A mains pressure boosting system increases the pressure and flow of water from the incoming mains supply into a property. It typically combines a pump and a storage or expansion tank, drawing water from the mains and delivering it to taps, showers and appliances at a stronger, more consistent pressure. They are used where the incoming mains is too weak to serve modern outlets reliably.
When do I need a mains booster pump?
You normally need a mains booster if static mains pressure is below 1.5 to 2 bar, if showers run weakly when other taps are open, or if combi boilers struggle to deliver hot water. Anglian Pumping recommends checking static pressure at the stop tap before specifying a system, then choosing a model rated for the number of bathrooms and outlets in the property.
What size mains booster do I need for my home?
Sizing depends on the number of bathrooms, the type of fittings and the static mains pressure. As a guide, a 1 to 2 bathroom property with combi boiler or single shower often needs 1.6 to 3 bar boost. A 2 to 3 bathroom property typically needs 3 to 4.5 bar with an integral break tank. Larger homes need a tank-and-pump system such as the DAB Esybox with Esytank or a Powertank set.
What is a water booster pump?
A water booster pump increases the pressure of an existing water supply to give stronger flow at taps, showers and appliances. It can be a small inline pump fitted to the incoming mains, or a larger pump and tank set that draws from a break tank to feed the whole house. Boosters do not create water – they raise the pressure of the water already coming in.
What is the difference between an inline booster and a tank-and-pump booster?
An inline booster connects straight onto the incoming mains and is limited to 12 litres per minute under UK water regulations – examples include the Salamander HomeBoost and WaterBoost WB-Compact. A tank-and-pump booster, such as the Grundfos Home Booster or DAB Esybox with Esytank, draws from a break tank and can deliver much higher flow rates for larger homes with multiple bathrooms.
What is a variable speed booster pump?
A variable speed booster uses an inverter to adjust pump speed in real time to match demand. It maintains constant pressure as outlets open and close, runs more quietly than a fixed-speed pump and typically saves up to 50 per cent of the energy a fixed-speed equivalent would use. The DAB Esybox, DAB Esybox Mini 3 and Grundfos Scala2 are common variable speed examples.