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  • 48 hours delivery, if you order before 5:00 pm
  • Package collection at one of our 2,500 pickup points
  • Customer satisfaction rate 4.6/5
  • Over 85,000 customers ordered before you

Grundfos MQ 3-45 Booster Pump

    • Grundfos MQ 3-45 Booster Pump

    Availability: In stock

    Special Price £ 559.00


    • In stock, delivery in 2 workdays
    • 2 year warranty
    • Delivery the day after tomorrow
    • This product is not available for pickup at a pickup point.
    • Multiple shipping options

    Description of the Grundfos MQ 3-45 Booster Pump

    Brief specifications

    • Pump capacity 4,100 l/h
    • Head rate 44 m / Pressure 4,4 bar
    • Automatically switches on and off + protected against dry-running
    • Silent and suitable for continuous use.
    • Suitable for irrigation / rainwater reuse

    Pros and cons

    • Absolute best quality
    • Can operate continuously
    • Low noise
    • Dry-run protection
    • Integrated pump controls
    • Space-saving
    • Is resistant against rust and limescale
    • High reliability
    • Small tank for water storage

    The Grundfos MQ booster pump is a compact water supply system and has been designed for homes and agricultural and horticultural applications. It is a very compact water supply system and consists of a pump, motor, pressure vessel, and a controller. All components have been combined in an integral unit. The pressure boosting pump is self-priming and has a check valve on the inlet side. It has a built-in protection against overloading and overheating of the motor. In addition, this booster pump has dry-run protection. Thanks to its very silent operation (54dB), the pump can certainly be installed in a house.

    The Grundfos MQ comes in two different versions:
    Grundfos MQ 3-35
    Grundfos MQ 3-45

    Suitable for drinking water
    Are you interested in the Grundfos booster pump? It is a great choice, as it is suitable for drinking water and has a wide range of applications. The pump is used as a booster pump for supply tanks (maximum inlet pressure 3 bar) and for instance, for pumping from a water source (maximum suction height of 8 metres. You can easily install and configure this pump. It is easy to connect because of the adjustable direction of the delivery connector. The simple control panel has a start/stop button as well as indicator lights to show the status. Be aware, since this booster is self-priming, it can also pump air. If you plan to use the Grundfos booster pump on a drinking water system, you need to install backflow protection on the pump in accordance with the Vewin requirements. Please contact us for this. This guarantees the quality of the drinking water.

    Protection system
    What's great about this pump is that it has an automatic restart function. If it is running dry or encounters another malfunction, the pump will stop automatically. The pump will attempt to restart every thirty minutes for a 24-hour period. Thanks to the innovative leakage detector, the pump will tell you if it has detected a leak. The built-in pressure vessel will limit the number of times it switches on and off. This limits unnecessary wear of your pump

    The MQ pump has been designed for water supply and pressure boosting and is suitable for use:

    • in homes
    • in holiday and weekend homes
    • on farms
    • in kitchen gardens and large gardens.

    This pump is suitable for pumping drinking water and rainwater.

    Characteristics and advantages

    • All-in-one pressure boosting unit
    • Easy to install
    • Easy to operate
    • Self-priming
    • Dry running protection
    • Low noise
    • Low maintenance


    This pump is labelled 'silent'. Naturally, a pump will produce noise like any other electrical device, but special attention was paid to the noise level. Thanks to its very low noise level, this pump can also be installed in a home without causing a nuisance. This is of course a subjective matter. However, pumps don't come any more silent than these ones.

    Stainless steel/Inox

    Stainless steel – also called Inox – can be very handy in some cases. Stainless steel is particularly recommended in drinking water applications. Drinking water has to remain uncontaminated and cannot contain corrosion. For this reason, stainless steel is used. Stainless-steel pumps are also resistant against limescale. Limescale has a tendency to build up, which is impossible on smooth, stainless-steel surfaces. The alternative to stainless steel is usually cast iron. These pumps can corrode. This is why these pump types are often used for irrigation. A final advantage of stainless steel is that it does not weight as much as cast iron and is therefore easier to move.


    Grundfos is one of the largest pump manufacturers in the world. They have a big piece of the industrial market, and for good reason. For decades, they have delivered the best possible quality. It is for this reason that many systems and situations these days use Grundfos pumps. Do not be surprised if you see your central heating system is equipped with a Grundfos circulation pump. Grundfos was originally a Danish company that has now expanded to many countries around the world and gained a considerable market share. In addition to central heating pumps and industrial products, Grundfos also sells a number of irrigation/booster pumps and they have a range of very robust and high-quality submersible pumps.

    Protection against dry running of the pump

    This pump is protected against dry running. Most pumps can't run dry for long or at all. This can result in the pump jamming and/or burning out immediately. This can happen when the well runs dry, and the pump is no longer able to suck in water. Irrigation pumps or booster pumps are particularly vulnerable to this. Some borehole pumps and more advanced irrigation pumps have standard built-in dry running protection. A pump that dies not comes standard with this, can easily be equipped with dry running protection, for instance, by adding a separate dry-run protection system or DAB Control-D. This ensures that your booster pump or irrigation pump will not run dry.

    Switches on/off automatically

    This pump switches on or off automatically when you turn on a tap somewhere that is connected to this pump. In many cases, it's very convenient if your pump switches on and off automatically. For instance, when you use it for irrigation with a hand nozzle. Or if you use rainwater to supply your toilet or washing machine. Certainly when you want to boost water pressure in your home too. Unlike a standard irrigation pump, a booster pump 'notices' when you turn on one or more taps, by registering a pressure difference. The pump will know it has to either start or stop. Standard booster pumps (installed on a tank) have a mechanical switch. More advanced booster pumps use an electronic switch. Both systems have their advantages and disadvantages. The mechanical switch is reliable but can't be (easily) adjusted. The electronic version can be adjusted but relies on electricity.


    Types of water this product can pump

    Yield table

      • 44 meter
      • 40 meter
      • 750 liter p/u
      • 35 meter
      • 1.550 liter p/u
      • 30 meter
      • 2.200 liter p/u
      • 25 meter
      • 2.750 liter p/u
      • 20 meter
      • 3.300 liter p/u
      • 15 meter
      • 3.800 liter p/u
      • 10 meter
      • 4.100 liter p/u
      • 5 meter
      • 4.100 liter p/u
      • 0 meter
      • 4.100 liter p/u
    » See the full description

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    Specifications of the Grundfos MQ 3-45 Booster Pump

    Algemene informatie

    • - Grundfos MQ 3-45 Booster Pump
      - Cable connection 2 m
      - Manual
    • Grundfos
    • 2 jaar garantie
    • 96515415

    Fysieke eigenschappen

    • 1"
    • 1"
    • Technopolymer and stainless steel
    • 13,3 kg
    • 57 x 21,8 x 32 cm

    Technische informatie

    • 230 Volt
    • 1.000 Watt
    • 55 dB
    • 0°C - 35°C
    • 2 m


    • Hydrofoorpomp
    • Garden irrigation, Increase water pressure in the house / apartment, Rainwater use within / around the house, Water supply for cattle
    • 4,100 l/h
    • 44 m / max. 4,4 bar output
    • 8 m
    • Max. 4 stuks

    Types of water this product can pump

    • - i.c.w. the supplied prefilter
    » See all specifications

    Accessories of the Grundfos MQ 3-45 Booster Pump

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