Kärcher Booster Pumps: Efficient Water Supply for Home & Garden

Booster Pumps from Kärcher: Simply Clever!

Kärcher booster pumps provide ideal conditions for luscious plant growth and efficient service water supply for home and garden. They enable access to alternative water sources like well water, groundwater, rainwater, and spring water for various applications, including garden watering and toilet flushing. Multistage hydraulics ensure necessary pressure. Kärcher barrel pumps allow ecologically responsible garden watering directly from water barrels.

Visual description: A man waters a garden with a Kärcher booster pump connected to a water butt. Another scene shows a woman with laundry next to a washing machine, illustrating domestic water supply.

A Reliable Reclaimed Water Supply

Using low-cost water from alternative sources like rainwater and groundwater is a smart choice. Kärcher booster pumps offer solutions for every purpose, ideal for washing machines, WC flushing, and garden watering, providing a reliable processed water supply.

• Use water sensibly: Home and garden pumps (BP Home & Garden range) are high-powered and convenient for garden watering and supplying water to WCs and washing machines.
• Deeply impressive: Compact, powerful stainless steel submersible pressure pumps allow use of deeper water sources like cisterns and deep wells. Multistage hydraulics ensure sufficient pressure.

Visual description: A man waters a garden with a Kärcher pump. Smaller images show a Kärcher pump connected to a washing machine and another pump drawing water from a barrel.

The Perfect Pumps for Home and Garden

Kärcher's durable, intelligent, and high-quality pumps are perfectly suited for supplying reclaimed water, switching on and off automatically as required.

• Comfort for home and garden: Pumps provide reliable water supply for washing machines and constant pressure for garden watering.
• Twice as practical: A 2-way connection adaptor allows two water outlets for simultaneous use (e.g., spray gun and sprinklers).

BP 5 Home & Garden

• Perfect for Home & Garden
• Extra-long lifetime
• Multistage for improved energy efficiency (30% energy saving**) and noise levels
• Awarded reddot award 2014.
• 5-year guarantee upon registration at www.kaercher.com/guarantee.

Visual description: A Kärcher pump connected to a washing machine and used for garden watering. Close-ups show the pump and a 2-way adaptor.

The Alternative Water Supply (Domestic Water Supplies)

Powerful BP 5 Home and BP 3 Home models automatically supply water from wells or cisterns, making low-cost reclaimed water available for washing machines, toilet flushing, etc. They switch on and off automatically.

• Efficient and convenient: Integrated 24-litre pressure compensation container ensures quiet, energy-saving operation even at low flow rates.
• Full control: Integrated manometer allows constant monitoring of pump pressure.

BP 5 Home

• Perfect for alternative service water supply in the household.
• Maximum safety with integrated thermal protection.
• Pressure compensation container for convenient use.
• Includes non-return valve and G1 connection adaptor.

Visual description: A Kärcher BP 5 Home pump connected to a washing machine. Close-ups show the pump's pressure gauge and internal components.

Powerful Packages That Are Easy to Operate (Garden Pumps)

Kärcher garden pumps are ideal for watering gardens using water storage facilities like cisterns or water butts. A practical foot switch provides convenience, and thermal protection ensures safety and long operating life.

• No need to bend over: Large foot switch allows easy on/off operation.
• Ready to use: BP 4 Garden Set includes vacuum-resistant spiral hose with suction filter and non-return valve.

BP 4 Garden Set

• Comfortable carry handle.
• Optimised connection adaptor requires no tools for set-up.
• Maximum safety with integrated thermal protection for long operating life.
• Direct use with supplied 3/4" spiral hose, filter, and non-return valve (G1 connection thread, 3.5 m).
• Awarded reddot award 2014.
• 5-year guarantee upon registration.

Visual description: A Kärcher garden pump in use for watering. Close-ups show the foot switch and hose connections.

Utilising and Conserving Resources (Barrel Pumps)

The innovative Kärcher barrel pump with an integrated on/off switch on the barrel mounting clamp makes it easy, efficient, and economical to water your garden with nutrient-rich rainwater, eliminating the need for heavy watering cans and reducing drinking water consumption.

BP 1 Barrel

• 400 watt max.
• Pumping rate: 3,800 l/h max.
• Pressure: 1.1 bar max.
• Suitable for any water butt due to flexible drum attachment.
• Height adjustable, integrated on/off switch, detachable prefilter.
• Convertible to submersible pump with float switch.
• Awarded Focus Green Silber 2008.

• Innovative and convenient: Water barrel mounting clamp and length-adjustable hose ensure optimal manageability.
• Practical and safe: On/off switch on the mounting clamp saves energy by preventing constant pump operation.

Visual description: A Kärcher BP 1 Barrel pump drawing water from a barrel.

High Performance at Great Depths (Deep Well Pumps)

Kärcher's compact and versatile stainless steel submersible pressure pumps, when connected to a pressure switch, can use deep wells for processed water supply in the house or for resource-conserving watering. Multistage hydraulics ensure sufficient pressure from low-lying areas.

BP 6 Deep Well

• Pump housing and threaded connector made from stainless steel.
• 3/4" and 1" hose connection piece with non-return valve and hose clamp.
• Integrated spacer base for installation.
• Separate on/off switch at the end of the cable.
• Includes 30 m power cable and fastening rope.

• Easy to use: Deep Well Box provides overcurrent protection and an easy, safe on/off switch.
• 30 m maximum depth range: Extra-long cable allows pumping from lowest depths. Fastening rope included.

Visual description: A Kärcher BP 6 Deep Well pump submerged in a well.

Deeply Impressive in Their Power and Quality (Cistern Pumps)

The BP Cistern submersible pressure pump obtains water from alternative sources like cisterns, water butts, and wide well shafts, ideal for garden watering. It works underwater and switches off automatically if water level is too low.

• Safe and robust: Casing and threaded connector made from stainless steel ensure impact-resistance and durability.
• Switching made easy: Integrated float switch and handle mounting allow easy adjustment of switching level.

BP 2 Cistern

• Max. flow rate: 5,700 litres per hour.
• Max. pressure: 3.2 bar.
• Pump housing and threaded connector made from stainless steel.
• 3/4" and 1" hose connection piece with non-return valve and hose clamp for immediate connection.

Visual description: A Kärcher BP 2 Cistern pump in a cistern and being installed.

Well Equipped All Around with Kärcher (Accessories)

The right Kärcher accessories enable quick and easy pump operation. The comprehensive range ensures efficient and resource-conserving use of alternative water sources.

• Safe and fits perfectly: Vacuum-resistant spiral hoses for Kärcher pumps, available as sets or cut to length.
• The best connections: Kärcher adapters and connectors ensure easy and secure hose connections.
• Optimal protection: Filters protect pumps from dirt and blockages, ensuring unlimited performance.
• Perfectly equipped: Accessories from dry-run protection to pressure compensation hoses ensure convenience and reliability.

Visual description: Various Kärcher pump accessories including hoses, filters, and connectors.

Technical Information: The Right Pumps for Your Requirements

A selection guide helps determine the ideal Kärcher pump based on water source and application area.

Pump Types Overview: Strengths & Notes

• Home and Garden Pumps: Easy monitoring, permanent installation (frost-free suction hose), integrated automatic mode, efficient, low-noise (multistage), maintenance-free. Note: Store in frost-free place. Capacity reduced with high suction heights. Additional suction hose may be required.
• Domestic Water Supplies: Easy monitoring, permanent installation (frost-free suction hose), integrated automatic mode, pressure boiler reduces start cycles, efficient for small water volumes. Note: Store in frost-free place. Capacity reduced with high suction heights. Air pressure in membrane must be checked. Watering tasks only under certain conditions.
• Submersible Pressure Pumps: Supply from deep shafts, efficient, low-noise (multistage), self-venting (immediate suction), only one hose on pressure side, space-saving. Note: Store in frost-free place. Power cable must be laid. Must be removed for filter cleaning. External pressure switch required for automatic function.
• Barrel Pump: Simple installation in water butt, low-noise (submerged), self-venting (immediate suction), only one hose on pressure side. Note: Store in frost-free place. Power cable must be laid. Must be removed for filter cleaning. Only suitable for small watering tasks.
• Garden Pumps: Easy monitoring, compact, lightweight, available as complete set. Note: Store in frost-free place. Capacity reduced with high suction heights. Additional suction hose may be required.

Note: An additional prefilter is recommended for Home & Garden, Garden, and Home pumps where water contains a lot of sand.

Technical Information: Practical Application Tips & Finding the Right Pump

Practical Application Tips

• For parallel operation of multiple watering solutions, connect each device via a separate hose (parallel connection) for optimum results, or carry out tasks one after another.
• Place the pump as close as possible to the water source for optimal power. Low suction height and a short, thick hose are ideal.
• For water containing sand, use an additional prefilter.
• Use one continuous hose or as few connection pieces as possible; too many connections reduce flow and pressure.
• For large flows, use a Premium connector with an enlarged diameter.
• Important Note: Thicker and shorter pressure hoses reduce pressure loss. A 3/4" hose is recommended (twice the diameter of 1/2" hose). Thicker and shorter suction hoses reduce suction loss.

Finding the Right Pump: Pump Curves

Pump curves illustrate the relationship between flow rate (horizontal axis) and delivery height (vertical axis). Flow rate decreases as delivery height increases. These curves are based on theoretical values, highly dependent on hose length and diameter.

Visual description: Multiple graphs show pump performance curves for various Kärcher models (BP Home & Garden, BP Garden, BP Home, BP Deep Well, BP Barrel, BP Cistern), plotting flow rate (litres per hour) against delivery height (meters).

Technical Information: Application Areas

The following table indicates the suitability of various Kärcher Booster Pumps (BPs) for different applications and water sources.

Important: None of Kärcher pumps are suitable for continuous circulation, continuous pump operation, or for drinking water use. Some applications may require a pressure switch (e.997-357.0).