It’s not a home away from home without a shower after a long day or running water readily available from your kitchen tap. That’s why you need a caravan water pump.
A caravan water pump makes it easy to deliver water from your onboard water tank to your caravan taps, toilet, and shower exactly when you need it. Whether you're parked at a powered site or off-grid, a reliable 12V water pump ensures consistent water pressure and flow, allowing you to enjoy the same convenience as a residential plumbing system.
But with so many 12V water pumps on the market, how do you choose the right one? You need a pump that runs efficiently, delivers the correct water pressure, operates quietly, and fits within your budget. Beyond that, it’s essential to consider factors like flow rate, power consumption, and durability - especially if you plan to travel to remote areas with limited access to maintenance and replacements.
How Caravan Water Pumps Work
A caravan water pump functions by drawing water from your storage tank and pressurising it to deliver a steady flow to your fixtures. The most common type used in caravans is a 12V water pump, designed for low power consumption while providing sufficient water pressure for daily use. These pumps typically activate when you open a tap, triggering a pressure drop in the system that signals the pump to turn on. Once the tap is closed and the pressure stabilises, the pump automatically shuts off.
In this guide, we’ll walk you through everything you need to know about choosing the right caravan water pump for your setup, ensuring a hassle-free and comfortable experience on the road.
Choosing the Right Flow Rate
Selecting the correct caravan water pump flow rate is essential for ensuring consistent water pressure across all your taps and appliances. If your pump is too weak, you’ll experience low pressure and inconsistent flow. On the other hand, an oversized pump can lead to unnecessary energy consumption and excess strain on your plumbing and power system.
As a rule of thumb, match your pump’s flow rate to the number of taps and appliances in your caravan.
| Number of Taps | Recommended Flow Rate | Description |
|---|---|---|
| Single Tap System | Up to 9 L/min |
Suitable for a basic setup with a single sink tap. Ensures smooth water delivery without overloading the system. |
| Two Taps | 9-12 L/min |
Ideal for setups with a kitchen sink and shower. The pump should meet or slightly exceed the combined flow rate of both taps. |
| Three Taps | Around 12 L/min |
Suitable for a sink, shower, and vanity. A slightly higher flow rate may be beneficial if multiple taps are used simultaneously. |
| Four Taps | 15-17 L/min |
Required for systems with a kitchen sink, shower, toilet, and vanity. Ensures adequate pressure throughout the caravan without significant drops in flow. |
| Five Taps | Up to 22 L/min |
Best for larger setups, including a washing machine. A high-capacity Shurflo or similar pump ensures multiple outlets operate smoothly at the same time. |
Understanding Pressure Requirements
Along with flow rate, pressure is a key factor when selecting a caravan water pump. Pressure is measured in PSI (pounds per square inch) and determines how forcefully water is pushed through your caravan’s plumbing system. Choosing the right pressure level ensures smooth water delivery without damaging your plumbing or appliances.
Matching Pump Pressure to Your Caravan’s Plumbing System
Before purchasing a 12V water pump, check the pressure rating of your caravan’s plumbing system and hot water unit. Many caravan plumbing setups are designed to handle a specific PSI range—exceeding this limit can lead to leaks, pipe damage, or system failure.
Most caravan water pumps operate within a 35-55 PSI range. However, always verify your system’s specifications to prevent unnecessary strain on your fittings and appliances.
Special Considerations for Gas Hot Water Systems
If you have a gas hot water system, PSI becomes even more critical. Some gas hot water systems require a minimum water pressure to ignite the pilot light and operate effectively.
- If the pressure is too low, the system may not start, resulting in no hot water.
- If the pressure is too high, the pump could pull more water than the heater can supply, causing fluctuations or system shutdowns.
To avoid issues, check your gas hot water system’s PSI requirements and choose a caravan water pump that falls within the recommended range.
Top Brands in the Australian Market
When it comes to caravan water pumps, choosing a trusted brand ensures reliability, efficiency, and longevity. Here are three of the top-performing brands available in Australia:
Shurflo – High Flow Demand & Smooth Operation
Shurflo is a leading name in the 12V water pump industry, offering pumps designed to deliver high flow rates with smooth, consistent operation. Known for their quiet performance and reduced cycling, Shurflo pumps provide excellent water pressure without sudden surges.
- Available in a range of sizes to suit different caravan setups.
- The Shurflo 4048 Fresh Water Pump is one of the most powerful options, delivering up to 15 L/min.
- Built with thermal overload protection, ensuring durability and longevity.
Seaflo – Quiet & Reliable Performance
For caravan owners looking for ultra-quiet operation, Seaflo is a top choice. Their range of 12V water pumps is designed to provide reliable water pressure while minimising noise.
- The Seaflo RV Supreme is Australia’s quietest caravan water pump, making it ideal for those who prioritise noise reduction.
- Models available with different flow rates to suit single or multi-tap setups.
- Seaflo pumps are built with self-priming technology, allowing for flexible installation options.
Flojet – High-Pressure Pumps for Demanding Setups
If you need a high-pressure water pump, Flojet is an excellent option. Designed for demanding applications, Flojet pumps ensure a steady and powerful water flow, making them perfect for larger caravans or setups with multiple taps.
- The Flojet Triplex Pump features an innovative three-chamber design, delivering exceptional pressure and flow rates as soon as you open a tap.
- Engineered for reliability, with durable components built to withstand frequent use.
- Ideal for setups requiring consistent water pressure across multiple outlets, including gas hot water systems.
Features to Consider When Choosing a Caravan Water Pump
Selecting the right caravan water pump involves more than just flow rate and pressure. To ensure reliable performance and longevity, consider these key features before making a purchase.
Voltage – 12V Water Pumps for Caravans
Most caravans and RVs use 12V water pumps because they are designed for low-power consumption and can run directly from the caravan’s battery system. While 24V and 240V options exist, they are typically used in larger motorhomes or off-grid setups with high-power requirements. For standard caravan use, a 12V water pump is the most practical and efficient choice.
Noise Level – Quiet Operation for Comfort
A noisy pump can be disruptive, especially at night. Some 12V water pumps, like the Seaflo RV Supreme, are specifically designed for quiet operation, making them ideal for reducing noise in your caravan. Look for pumps with rubber mounting feet and built-in dampening systems to minimise vibrations and sound levels.
Power Consumption – Efficiency Matters
Your caravan water pump runs off your battery, so choosing an energy-efficient model helps extend battery life—especially when camping off-grid. A pump that delivers just the right amount of flow and pressure without unnecessary power draw will reduce strain on your electrical system. Avoid choosing an overpowered pump, as it will drain your battery faster and create excessive pressure that could damage your plumbing.
Durability & Warranty – Built to Last
Since caravans are exposed to various environmental conditions, choose a water pump made from corrosion-resistant materials like stainless steel and heavy-duty plastic. Brands like Shurflo, Seaflo, and Flojet offer pumps with thermal overload protection and sealed motors for enhanced durability. Additionally, check the warranty coverage—longer warranties often indicate better build quality and manufacturer confidence in the product.
Installation Ease – A Hassle-Free Setup
While we’ll cover installation in detail in the next section, it’s worth considering pumps with self-priming capabilities and quick-connect fittings for a smoother setup. Self-priming pumps can operate without manual priming, making them easier to install and use, especially for off-grid caravanners.
Installation Tips and Essential Accessories
A properly installed caravan water pump ensures smooth operation, reduces wear and tear, and enhances water system efficiency. Whether upgrading an existing system or installing a new 12V water pump, having the right accessories can improve performance and longevity.
Accumulator Tanks – Reduce Water Hammer & Cycling
An accumulator tank is a highly recommended addition to your caravan water pump system. It acts as a pressure buffer, smoothing out water flow and reducing pump cycling. Benefits include:
- Minimising water hammer (sudden pressure surges that cause noisy pipe vibrations).
- Extending pump lifespan by reducing the number of on/off cycles.
- Providing more consistent water pressure for better showering and washing experiences.
Water Filters – Protect Your Pump & Maintain Clean Water
If you’re drawing from a water tank or non-mains supply, installing a water filter is essential. Using unfiltered water can lead to sediment build-up, clogging your pump and damaging internal components.
- Inline water filters, such as the Shurflo Filtration Kit, can remove contaminants as small as 0.5 microns and last for up to 1900L before needing replacement.
- Filters help prevent debris from damaging your pump, extending its lifespan.
- They ensure clean, safe drinking water, especially when filling from unknown water sources.
Plumbing Components – Hoses, Fittings & Connectors
A smooth and leak-free installation depends on using the right hoses, fittings, and connectors. Here’s what you need to consider:
- Flexible, reinforced hoses: These prevent kinks and ensure steady water flow.
- Quick-connect fittings: Ideal for easy installation and maintenance.
- Non-return valves: Prevent backflow and protect your pump from damage.
- Teflon tape: Essential for sealing threaded connections and preventing leaks.
Common Mistakes to Avoid When Choosing a Caravan Water Pump
Selecting the right caravan water pump is essential for maintaining a reliable and efficient water system. However, there are a few common mistakes that can lead to poor performance, increased maintenance, or even system failure. Here’s what to watch out for:
Buying a Pump That’s Too Big for Your Setup
A high-capacity pump might seem like a good idea, but if it exceeds your caravan’s needs, it can create several problems:
- Excessive power consumption, draining your battery faster than necessary.
- Too much pressure, which can strain your plumbing and cause leaks.
- Frequent cycling, leading to noisy operation and a shorter pump lifespan.
Solution: Choose a pump with a flow rate and pressure suited to the number of taps and appliances in your caravan. A pump that is too powerful will not improve performance but will instead cause unnecessary wear and tear.
Ignoring Pressure Requirements for Hot Water Systems
Every gas or electric hot water system has a maximum pressure limit. If the pump exceeds this limit, it can lead to:
- Inconsistent water temperature or failure to heat properly.
- Overloaded plumbing, increasing the risk of leaks or system damage.
- Gas hot water systems fail to ignite, as they require a specific PSI to trigger the burner.
Solution: Check your hot water system’s recommended PSI range and select a pump that stays within those limits to ensure proper operation and longevity.
Not Using Water Filters with Non-Mains Water
As we have already mentioned, If you’re drawing water from a tank, creek, or bore, skipping a water filter can cause major issues:
- Sediment and debris can clog the pump, reducing efficiency and lifespan.
- Unfiltered water can lead to contamination and potential health risks.
- Some manufacturers void warranties if a pump is used without a filter.
Solution: Install an inline water filter, such as the Shurflo Filtration Kit, to prevent debris from damaging the pump and to ensure clean, safe water for drinking and washing.
Caravan Water Pump FAQ’s
What size water pump do I need for my caravan?
The size of the caravan water pump depends on how many taps and appliances you need to supply. As a general guide:
- Single tap: Up to 9 L/min
- Two taps: 9-12 L/min
- Three taps: Around 12 L/min
- Four taps: 15-17 L/min
- Five taps (including washing machine): Up to 22 L/min
It’s important to match the flow rate to your setup to avoid overloading your system or draining your battery unnecessarily.
How much pressure should a caravan water pump have?
Most 12V water pumps operate between 35-70 PSI. However, it’s crucial to check your caravan’s hot water system specifications, as exceeding the recommended pressure can cause damage or system failure.
Can I run a 12V water pump continuously?
Most 12V caravan water pumps are designed to cycle on and off as needed, rather than run continuously. Running a pump constantly can overheat the motor and reduce its lifespan. If you need a pump for continuous use, look for a duty cycle rating that supports extended operation.
How do I make my caravan water pump quieter?
To reduce noise, consider:
- Installing rubber mounts to absorb vibrations.
- Adding an accumulator tank to smooth water flow.
- Using flexible hoses instead of rigid pipes to reduce noise transmission.
- Ensuring the pump is securely mounted to prevent rattling.
How long do caravan water pumps last?
A high-quality caravan water pump can last 5-10 years, depending on usage, maintenance, and water quality. Regularly cleaning filters, checking fittings, and preventing dry runs can extend the life of your pump.
Can I use a household water pump in my caravan?
No, household pumps typically require 240V power and are designed for higher pressure than caravan plumbing systems can handle. A 12V water pump is the best option for caravan setups, as it runs off your battery system and is designed for mobile use.
How do I install a caravan water pump?
Installation involves:
- Mounting the pump securely in a stable location.
- Connecting the water inlet and outlet using appropriate hoses and fittings.
- Ensuring the power supply is properly wired to the caravan’s 12V system.
- Testing for leaks and adjusting pressure settings if needed.
Finding the Perfect Caravan Water Pump
Choosing the right caravan water pump is essential for ensuring a reliable, efficient, and hassle-free water supply in your setup. Key considerations include selecting a pump with the appropriate flow rate and pressure, ensuring it matches your hot water system requirements, and investing in essential accessories like accumulator tanks and water filters. Avoiding common mistakes—such as buying an oversized pump, neglecting pressure limits, or skipping filtration—will help extend the lifespan of your pump and improve overall performance.
Ensuring a proper installation and selecting the right components will make a significant difference in the longevity and efficiency of your system. With the right setup, you’ll have consistent water pressure, smooth operation, and peace of mind—whether you're off-grid in the outback or enjoying a powered campsite.
Ready to buy your caravan water pump? Shop now.
DISCLAIMER* Please note, this advice is general in nature and we strongly recommend consulting the product manual and where relevant, a professional installer.
