Choosing a Garden Pump: The 2024 Buying Guide

By the Westfalia editorial team · Updated on 13.08.2026
Created and reviewed by the Westfalia editorial team.

In brief: The right garden pump depends on your water source and watering needs. Rain barrel pumps work well with rain barrels. For wells or cisterns, choose a submersible pressure pump or deep well pump with a higher flow rate. Check the pump’s head height, flow rate, and the pressure your lawn sprinkler or irrigation system requires to find the right fit.

Hauling heavy watering cans is a thing of the past. A garden pump makes watering quicker and easier. You can put rainwater or well water to good use, conserve resources, and save money. But which water pump is right for your garden? This guide covers the key factors to help you find the right pump for your needs.

Why is a garden pump a worthwhile investment?

A powerful garden pump is more than a convenient tool. It’s the heart of a smart, sustainable garden irrigation setup. Use alternative water sources such as rain barrels, cisterns, wells, or ponds to save valuable drinking water. That can lower your water bill while conserving resources.

The biggest benefit is the time and effort you save. Instead of making countless trips with a watering can, you can water large lawns, long hedges, and thirsty flower beds in minutes. Connect a lawn sprinkler or garden spray gun and let the pump do the work. You’ll have more time to enjoy your garden.

Using rainwater to irrigate your garden is a practical way to help protect the environment. It reduces demand for treated drinking water and eases pressure on the sewer system during heavy rainfall.

A pump can also run more complex irrigation systems. Soaker hoses and lawn sprinklers need steady water pressure, which a pump can provide. This helps deliver the right amount of water to every plant, efficiently and precisely.

What types of garden pumps are available?

Start by thinking about your water source and how you plan to use the pump. Each type has its own strengths.

Rain barrel pump: An easy way to get started

Rain barrel pumps are a simple way to use collected rainwater. Place the pump directly in your rain barrel or cistern. Many models, such as the cordless rain barrel pump

Cordless rain barrel pump, 12 Volt

View product

, run on battery power for added flexibility without cords underfoot. They’re ideal for watering with a hand spray gun or running smaller sprinklers.

These pumps are compact, quiet, and easy to use. A built-in filter catches larger debris, while an adjustable telescopic tube fits rain barrels of different heights. For quick, convenient use of rainwater, this type of pump is a great choice.

The classic garden pump (surface pump)

A classic garden pump, also called a surface pump, sits on dry ground and draws water through a suction hose. It’s more powerful than a rain barrel pump and can draw water from deeper sources such as wells, ponds, or streams. Due to the laws of physics, the maximum suction height is around 7 to 8 meters.

These pumps are sturdy and versatile. Use one to run several lawn sprinklers or move water over long distances. Before using it for the first time, fill the pump housing and suction hose with water (called priming), unless you choose a self-priming model.

Additional advice

If your well or pond water contains sand or suspended particles, install a pre-filter on the suction hose. It protects the pump from wear and clogs, helping extend its service life.

Submersible pumps and submersible pressure pumps

As the name suggests, these pumps operate directly in the water. There’s an important difference: standard submersible pumps move large volumes of water at low pressure. They’re great for draining basements or pools, but aren’t suited to irrigation.

For garden irrigation, you need a submersible pressure pump. It’s also lowered into the cistern or well, but generates enough pressure to run lawn sprinklers and irrigation systems. These pumps are quiet because the water muffles operating noise, and they’re a good choice for deep water sources.

The home water system: An all-in-one solution

A home water system is a premium option. It consists of a pump, pressure switch, and pressure tank. The tank stores water under pressure, so the pump doesn’t have to start every time you draw a small amount of water. This saves electricity and helps protect the pump.

Home water systems maintain steady water pressure and switch on and off automatically. They’re a great choice if you want to use utility water for flushing toilets or running the washing machine as well as for garden irrigation. They offer convenient water management throughout your Garden + Outdoor space.

How do I choose the right pump? Key specifications to know

Pump specifications can be confusing. Focus on three key figures to choose the right one.

Flow rate (in liters per hour, l/h)

The flow rate tells you the maximum amount of water a pump can move per hour. The flow rate you need depends on what you plan to run. A standard garden hose requires around 500-1.000 l/h, while a lawn sprinkler often needs 800-1.200 l/h. If you plan to use several outlets at once, add their flow requirements together.

Head height and pressure (in meters and bar)

Maximum head height tells you how high the pump can move water. It’s directly related to pressure: a head height of 10 meters is approximately 1 bar of pressure. Keep in mind that the stated maximum head height is measured at a flow rate of zero liters. In practice, you’ll need some extra capacity.

To calculate the head height you need, measure the difference in height between the water source and the highest point, such as the lawn sprinkler. Add the pressure your sprinkler requires, usually 2-3 bar, or 20-30 meters. Allow another approx. 10-20% for friction losses in the hose.

Suction height (for suction pumps only)

This figure applies only to conventional garden pumps installed above ground. It describes the maximum vertical distance between the pump and the water surface it draws from. For physical reasons, suction height is limited to a maximum of 8 meters. Make sure the pump is close enough to the water source.

Practical application: from pump to irrigation system

The best pump is only as good as the system it supplies. Choosing the right components is essential for efficient irrigation. A high-quality garden hose with the right diameter helps prevent pressure loss and ensures the pump delivers its full performance to your plants.

For lawns, an oscillating sprinkler such as the EXPERT lawn sprinkler

is an excellent choice. It distributes water evenly over a rectangular area, making it ideal for most gardens. These sprinklers need a steady pressure of at least 2 bar, which a suitable garden pump or submersible pressure pump can easily provide.

Watering in the morning is best. The soil is still cool, so the water evaporates more slowly. Deep, less frequent watering encourages roots to grow deeper and helps plants withstand drought.

Targeted watering is ideal for vegetable beds, hedges, and delicate plants. A drip irrigation system such as the 50m irrigation system set

delivers water directly to plant roots. This can save up to 70% water compared with overhead sprinklers. A pump with a lower flow rate but steady pressure is ideal for drip irrigation and can fully automate watering.

Installing and maintaining your garden pump

Proper installation and regular maintenance help your pump work reliably and last longer.

Proper installation

Place the pump on a firm, level surface. Protect it from direct sunlight and heavy rain. Use hoses with the diameter recommended by the manufacturer to minimize performance loss. For suction pumps, the suction hose must have a watertight connection, and the suction strainer should have a check valve. This keeps the water in the line and prevents the pump from having to prime itself again each time it starts.

Regular maintenance and care

Maintaining a garden pump is straightforward. Clean the pre-filter regularly, if your pump has one. Check the seals and connections to make sure they are secure. Before storing the pump for winter, drain the entire system. Store it in a dry, frost-free place, and it will be ready to use again in spring.

With the right pump, garden irrigation becomes an easy, water-saving routine instead of a chore. Assess your needs, compare the key specifications, and choose the model that fits your garden perfectly.

Frequently Asked Questions

How much pressure does a garden pump need?

It depends on how you plan to use it. A lawn sprinkler generally needs 2 to 4 bar. For watering with a garden hose, 1.5 to 2 bar is often enough. Check the requirements of your irrigation equipment to find the minimum pressure your pump needs and make sure everything works smoothly.

Can I leave a garden pump out in the rain?

Most garden pumps are splashproof (e.g. according to IPX4), but they are not completely waterproof. Place the pump in a covered, dry location to protect it from heavy rain and direct sunlight and extend its service life. This also helps prevent corrosion and electrical damage.

What does self-priming mean for a garden pump?

A self-priming pump can remove air from the suction line and draw in water once the pump housing has been filled. This makes startup easier because you do not have to manually fill the entire suction line with water. A check valve on the suction strainer is still highly recommended.

How do I prepare my garden pump for winter?

Completely drain the pump and all connected hoses before the first frost. Water expands when it freezes and can damage the pump housing or seals. Then store the pump in a dry, frost-free place, such as a basement or garage.

Do I need a filter for my garden pump?

Yes, a pre-filter is highly recommended, especially if you pump water from a well, pond, or water tank. It protects the inside of the pump from sand, dirt, and other suspended particles. This helps prevent premature wear and significantly extends the pump's service life.