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Grundfos MQ 3-45 Compact Home Water Booster Pump - 230v


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Grundfos MQ 3-45 Compact Home Water Booster Pump - 230v
Now replaced with the Scala2 3-45 Domestic Home Booster Pump Set:
Part Number: GR-96607288

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£890.00 RRP

£390.00 [Ex. VAT]
Including VAT £468.00
*on orders over £50
1 year guarantee
EUP Ready

Product Details

Grundfos MQ3 home booster pumps are convenient, compact, fully-integrated units which remove the requirement for a separate pressure tank and associated pipe fittings/connections.

With no pressure tank or switch, fewer fittings are required for installation, minimising space. Easy to install and maintain, Grundfos MQ3 is ideal for domestic or holiday home use.

Features and benefits: 

  • All-in-one unit
  • Easy to install
  • User friendly control panel
  • Low noise
  • Dry running and overload protection
  • Flow switch reduces stop/start operations
  • Automatic re-set


The MQ3 controller starts the pump when the discharge pressure falls to approximately 1.5 bar. The pump continues to run until the pressure rises above 2 bar and the flow demand stops. The flow switch prevents on/off cycling of the pump with small demands.

The in-built protection protects the pump against water starvation, or if the motor overheats due to seizure of the pump shaft. If the pump goes into alarm, the pump will be stopped and the red alarm indicator illuminated. The pump can be set to automatically reset should the pump go into alarm, in which case the pump will attempt to restart every 30 minutes for a period of 24 hours.

If required the automatic reset function can be deactivated. For systems with leaks an external 8 litre pressure vessel can be added to reduce pump starts. A pressure reducing valve can be added to the outlet to regulate the outlet pressure

Delivery & Returns

Pump Sales Direct (PSD) offers a free standard delivery service (2-3 working days) to mainland UK*. The free standard delivery service relates to all pumps on our website and also individually purchased spares or accessories over the value of £50 (before VAT). Individual spares or accessories purchased under £50 will incur a £6.95 delivery charge.

PSD also offers a next day delivery service at a charge of £7.50*, provided we receive your order before 3:30pm Monday to Friday (excludes Weekends and Bank Holidays).

*Excludes UK Islands, Republic of Ireland, Northern Ireland and Scottish Highlands.

UK Delivery Charge Options:-

Standard Delivery (2-3 working days)* - FREE

Next Working Day Delivery (on orders placed before 3:30pm)* - £7.50

Next Working Day Delivery before 10.30 am (on orders placed before 3:30pm)* - £25.00

Next Working Day Delivery before 12.00pm (on orders placed before 3:30pm)* - £15.00

Saturday AM Delivery before 12.00pm*- £35.00

Scottish Highlands Standard Delivery - £17.50

UK Islands & Republic of Ireland Standard Delivery - £25.50

*Excludes UK Islands, Republic of Ireland, Northern Ireland and Scottish Highlands.

Additional Information

Additional Information

Manufacturer Grundfos
Guarantee message 1 year guarantee
Dimensions L570 x W218 x H320mm
Bars 4 bar
Impeller type Single
Electrical supply 230V
AC Power Single Phase
Speed No
Cable length 2m
Flow rate 50 Ltr/min
Max Head 23m
Pump Operation No

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