Best 12V RV Water Pump Reviews & Buying Guide-2021

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Without a good water pump, an RV is basically just port-a-potty. It’s one of the essentials for an RV plumbing system to help supply water to the showers, cooking, faucets, toilets and more. The work of this pump is to ensure consistent flow of water at a stabilized pressure. However, finding the best 12v RV water pump isn’t easy as the market is flooded with tons and tons of varieties.

For those looking for a durable water pump with excellent performance curve, the SHURFLO 2088-554-144 is a good option. It offers an extremely efficient pressure rating with low energy consumption. With self-priming capability, the pump runs dry for long without developing any mechanical problems.

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Customers Reviews

01. Shurflo 2088-554-144 Fresh Water Pump, 12 Volts, 3.5 Gallons Per Minute, 45 Psi

Salient Feature

  • Voltage: 12VDC
  • GPM: 3.5
  • Amps: 4.2-4.5 amps
  • Motor: Thermal protected
  • Material: Stainless steel
  • Self-priming: Up to 9” vertical
  • Net weight: 4.8lbs
  • PSI: 45

The SHURFLO 2088-554-144 is specifically designed with exceptional performance curve as it delivers reliable water flow into your RV appliances. The unique thing about this model is the check valve that helps limit occurrences of reverse flow.

The check valves are made from Santoprene thermoplastic which presents no risk even when water comes into contact with it. An extremely consistent model and the assurance of top performance will make you contemplate replacing your old unit with this new.

It features thermal protection with reduced noise operation making it your ideal RV companion. Besides, the pump perfectly fits in any position you want during installation. Its build is small and compact hence fits on any standard RV. You can install it either horizontally or vertical.

A bypass low cycling mechanism makes the model very strong. The pump has the ability to run dry and still function properly with zero damage.

Shurflo pumps 3.5 GPM and offers a pressure of 45 psi. With a low price tag at such pressure, this is fantastic. The pump guarantees a steady 1-way flow. With the assurance you will always have potable water for your RV needs.

The low maintenance design is another great feature of this unit. You have less to worry of mechanical problems. You can easily fix by hooking it up to your RV’s electrical system and water pipelines.

Pros

  • Easy to mount in any position
  • Low-maintenance
  • Can run dry
  • Its NSF certified
  • Very reliable

Cons

  • Powerful engine produces a lot of noise

02. Flojet 03526-144A Triplex Diaphragm Automatic Water System Pump, 2.9 GPM 50 PSI, 12 volt DC

Salient Feature

  • Voltage: 12V
  • GPM: 2.9
  • Amps: 3.9
  • Motor: Thermal protected 
  • Material: Stainless steel
  • Self-priming: 9 ft
  • Net weight: 3.8LBS
  • PSI: 50

The pump will deliver results that surpasses your expectations. With a quality build of 100% corrosion resistant materials, Flojet has a long lifespan of any pump on the market today. The main benefit of choosing this model is the consistent and smooth flow of water. Besides, it has an original design which ensures optimum performance on different operation ranges. It also consumes low energy despite having a powerful engine.

Flojet features a stable motor design that combines accurate ball bearings for durability purposes. Remember the engine also comes with in-built thermal breaker

If your old model operates with a lot of noise, buying this unit will change the conversation for good. This water pump is designed with superior soft mounts that aggressively absorb the vibrations and noise from the running engine hence a smooth and quite operation. There is also an integrated bypass that stabilizes the unit to emit less pounding, hence a softer operation.

Since it’s consistent, the pump produces up to 2.9 gallons per minute. While the rate might seem low, it’s ideal for running most of the appliances in your RV water system.  Take advantage of the Triplex diaphragm which takes the whole performance to an even higher levels.

Above all, Flojet is user-friendly, has a priming functionality and will serve you with countless of years of incredibly quiet operation when installed properly. The product is delivered on a soft rubber mounting to help dampen vibrations.

Pros

  • A genuine Flojet product
  • Less noise
  • Low pulsation
  • Corrosion resistant materials
  • Reduces need for accumulator tank
  • Easy to mount
  • Can run dry

Cons

  • Run hot if used for long time

03. Water Diaphragm Self Priming Pump 3.0 Gallons/min (11.3 Lpm) 45 PSI New Rv/Marine 12 Volt Dc / 12 V Demand Fresh

Salient Feature

  • Voltage: 12v DC
  • GPM: 3.0
  • Amps: 4.62
  • Motor: Thermal protected 
  • Material: Viton
  • Self-priming: 6ft
  • Net weight: 4.62
  • PSI: 45

The new water pump delivers 1.2 gallons per minute and 35 psi. This makes it extremely efficient with low energy consumption and higher capacity output.

Self-priming capability ensures the engine runs dry for a longtime without incurring any damage. An in-built pressure switch on the pump turn on and off anytime you close or open your water faucets.

This model features a thermal overload and ignition protection. It’s extremely easy to install thanks to the soft rubber mounts and low power draw. Installing the pump does not require experts due to the quick-connect plug-in-ports.

The high flow rate in the water pump is made possible by the 4-piston design. With soft rubber mounts, the model produces less vibrations when the engine is running. There is a vertical suction lift capability that extends meaning the pump offer little maintenance to the user.

Pros

  • Powerful and reliable
  • Self-priming
  • High flow rates
  • Easy to install
  • Quieter and smoother operation.
  • Less maintenance

Cons

  • A bit slower than the other models

04. Bayite 12V DC Fresh Water Pressure Diaphragm Pump with Hose Clamps Self Priming Sprayer Pump with Pressure Switch 4 L/Min 1.0 GPM 80 PSI for RV Camper Marine Boat

Salient Feature

  • Voltage: 12v DC
  • GPM: 4.0
  • Amps: 3.0
  • Motor: Thermal protected 
  • Material: Stainless
  • Self-priming: 5ft
  • Net weight:  0.9
  • PSI: 80

If you want an RV water pump with superior features at an affordable price, the Bayit 12V is one great option. The pump features a patented design that delivers consistent and smooth flow of water in your RV. Moreover, it draws extremely low amounts of energy while ensuring quality performance at all operation ranges.

The model offers a vertical suction lift of 2m with a variable cut-off pressure ranging between 80-100PSI. A stable motor design include smooth ball bearings that extends the lifespan of this model.  .

You’ll also notice a thermal breaker with a completely sealed body. The essence is to prevent moisture into the pump. The electro-coating ensures you can use it in wet environments by inhibiting corrosion.

Suitable for wide applications including RV and camper marine boat. The product is shipped in a soft rubber mounting meant to absorb vibrations. Overall, if you install it correctly, this pump offers many years of silent operation.

Pros

  • Minimal noise and vibration
  • Serves as a replacement pump
  • High-flow rate
  • Thermal protection
  • Highly affordable

Cons

  • Low performance as compared to other models

05. Shurflo 4048153E75 Electric Water Pump

Salient Feature

  • Voltage: 12V
  • GPM: 4
  • Amps: 10.0
  • Motor: Thermal protected 
  • Material: 
  • Self-priming: 6ft vertical
  • Net weight:  5
  • PSI: 55

You can expect a lot from this high performance fresh water pump with flow reaction technology. It delivers a smooth, low cycling and high performance plumbing system with its extra-ordinary one-piece diaphragm.

Automatic demand design eliminates the necessity for an accumulator tank. With flow reaction technology, the pump produces low noise, rapid cycling and great performance up to 4 GPM at 55 psi.

The pump is environmentally friendly for efficient power use and less hazardous waste.  Like most pumps, its runs dry thanks to the self-priming functionality.

An integrated check valve helps prevent reverse flow of water.  

Pros

  • Power drive technology
  • Corrosion resistant
  • Thermal protection
  • High flow rate
  • Easy mounting on either directions
  • Run dry protection

Cons

  • High amp draw compared to similarly priced models

06. Shurflo Revolution Standard 12v Automatic Demand Pump Classic RV Pump 4008-101-E65

Salient Feature

  • Voltage: 12V
  • GPM: 3
  • Amps: 7.5
  • Motor: Thermal protected 
  • Material: Stainless
  • Self-priming: 6ft
  • Net weight: 5.2
  • PSI: 55

The Shurlo’s pump features a self-priming capability which ensures no damage whenever the pump runs dry. At 12V, the bypass low cycling ensure the pump operates consistently for a long period of time without any mechanical problem.

The pump is lightweight and compact. It perfectly fits any position and runs almost no time. Despite being small, the pump guarantees a constant and steady flow of water of 3 gallons per minute and 55 psi.

One thing you notice with the model is the price difference with the first pump. It’s much quieter and has less vibrations. An integrated bypass and one-piece diaphragm combines to give a lifelong service and great pump performance.

Even with incredible performance, this model maintains low energy consumption at 7.5amps. The versatility of this unit is well displayed on its ability to install in any space and run with little maintenance.

Pros

  • Operates quietly
  • Lightweight and convenient design
  • Thermally protected
  • NSF certified for quality water

Cons

  • Does not include a strainer

07. Remco (55-AQUAJET ARV Aquajet Rv Series Water Pump

Salient Feature

  • Voltage: 12V
  • GPM: 3.5
  • Amps: 10
  • Motor: YES
  • Material: Steel
  • Self-priming: 13ft
  • Net weight: 6.43
  • PSI: 85

Plenty of features makes Remco your ideal RV water Pump. Self-priming functionality allows it to run dry with no significant damages to the engine. You can essentially mount the pump up to 6ft and still get a steady flow of water.

It’s worth mentioning that this pump has compact and super practical design along its excellent performance. It also offers an efficient pressure rating of 65psi but still keeps low energy consumption. This unit is designed to operate for a long time with very little maintenance.

The pump will give you an advantage of four-chamber design to help maintain constant water volume and pressure. Besides, it’s equipped with thermal protection against overpressure and soft rubber to reduce vibrations.

One thing you’ll appreciate about this pump is the very minimum maintenance it requires. Above all, it’s easy to install.  Just like with all pumps for RV, the Remco 55-AQUAwith 12V use Flow reaction technology with minimal pump cycling.

Pros

  • Operates quietly
  • Draws less energy
  • Smooth and consistent water flow
  • Easy to install
  • Cost-effective

Cons

  • Less noise means low performance

How to choose the best 12v RV water pump?

The guide below gives the varying features and specifications you need to consider when buying the best 12v RV water pump.

Pump Types

RV water pumps are mainly divided according to the amount of power they use.

  1. Constant speed pump

This type supplies water at a single rate of flow through your system. Since its constant, there is now way you can adjust the water speed. The model is simple and most affordable.

  1. Variable speed pump

The flow varies depending on the requirements. You can adjust the speed using a built-in pressure switch, which gives a varied flow rate. While this model produce less noise, it also comes with a premium price tag.

  1. High Volume Pump

They require more power in order to move water at a much faster rate unlike a standard pump. This type of pump is common in large RVs that offers the required 50 amps.

Energy Consumption

A water pump requires a certain amount of electric power to run. For this, you need to find a model that matches the capacity of your RV’s systems. You must understand the energy requirements of your unit to avoid blowing fuse while powering your pump with other electrical appliances. A model that consumes much energy is also likely to drain your battery faster.

Voltage Requirements

While most of the pumps fall under the 12V or 24V group, there are few kinds with different energy requirements. You need to consider the capability of your RV to supply enough voltage need to operate the pump effectively. Large models are ideal for larger RVs, but always check your RV first.

Sound Output

Water pumps are designed with a running motor to function. For this, they naturally produce some kind of noise. However, some models tend to produce less noise compared to others. Checking on the sound output will help you find the best water pump with less noise when running.  Mostly, water pumps with five-chamber designs have less noise. They are quite even when operating at multiple faucets at ago. Mounting design for your pump will also determine on the kind of noise produced by your pump.

Auto Switch Feature

Not all 12v RV pumps comes with an automatic switch feature. The essence is to shut off the pump once the preset pressure rating is achieved. Without this, the pump runs continuous until you manually turn it off. Your electric consumption will go high and this can damage your RV pipes. Also, a pump running without a cause will have a much reduced lifespan.

PSI and GPM

These two metrics are very crucial when it comes to choosing the right water pump. The PSI (pounds per square inch) will help you understand the safe water pressure rating. The best pressure rating ranges between 30-40 PSI. On the other hand, GPM (gallons per minute) is used to indicate pump flow rate. This metric will tell the amount of water pumped after every minute. Knowing your flow rate is crucial to ensure your system achieve the require pressure for various applications

Ease of Installation

Avoid buying water pumps that require only experts to install. A good pump should be easy to install with less complications. In general, lightweight and compact models tend to be easier to install.

Size

The essence is to buy a model that fits where you plan to install it. Measure the dimensions of the RV space on where you want to install it.

How do you prime a Shurflo water pump?

Shurflo water pumps are designed for consistent general duty water transfer applications. However, they are likely to stop working when they are left unused for long periods of time. To get the pump working again, it must be “primed”. This involves forcing water through the pump in order generate enough pressure to start running again.

Below are the basic steps of how to prime Shurflo water pump.

Step 1. Prepping the System

Disconnect any electrical power to the pump. Use any plumping fixture that gives access to the pump system. Check damage on the system. Inspect all piping and fittings for signs of blows, dirt, cracks and more. Manually operate the valves and ensure all anchoring fasteners are securely tight.

Step 2. Flushing the System

Take a clean hose and insert into the plumbing fixture. Turn on the water through the hose. There should be some air flowing through at the start of it.  Check on the pressure gauge rising or listen to the sound of water filling the tank.  Turn it off once water starts to come out the opposite end. The water system is now pressurized once it stops flowing on the other end. Still, have the hose connected in case you may want to repeat the procedure.

Step 3. Finishing the Job

Now turn on the electrical power to the pump. Let it run for a few seconds. However, remember the pump wont operate is the tank pressure exceeds the cut-out pressure. Also, wait for water to begin speeding from the open relieve valves and close them.

Allow the water pump to end its cycle. It should turn off automatically. If not, then repeat the process again. Turn on the water at the primary source. Repeat the process over and over again until the Shurflo pump is fully primed.

How do you install a 12v water pump on a camper trailer/RV?

Your 12V water pump comes with a user manual for installation. Learn to follow it for safe and easy installation process. Below is a general guide to help you:

Step 1: Drain the Water Tank

Attach a hosepipe at the base and drain the water tank. You would like to direct the hose to a different drum to avoid wasting water. You can reuse it later when you finish installing.

Step 2: Uninstall the Old Pump

Next, remove the wires in order to detach the old pump from your battery bank. Also, disconnect all hoses from the pump. Once you remove them, move to the bolt and screws that hold the pump into place. Now, pull out the old pump from your RV.

Step 3: Tighten the New Pump

Fix the new unit on the same spot as the old one and secure it tight. In addition, use a seal tape to wrap up the pipe.

Step 4: Rewire

Once you make sure the pump is well bolted, now start to reconnect both the hoses and wires. Always inspect all connects again before proceeding to the next step.

Step 5: Testing

Up to this point, you should have a functioning water pump. Just turn on the power switch and see if the motor is operational. In case it fails, check on any odd sigh and correct appropriately.

How do you wire a 12 volt water pump?

First, you need to read the manual guide and understand all the wiring steps necessary. Also, have the required tools as indicated by the manual guide.

Step 1 - Disconnect All Power

Turn off all the electrical power connecting the water pump. Use a voltmeter to test for no presence of electrical power before you starting wiring. Turn off the control box where necessary.

Step 2 - Ground the System

For safety purposes, all wiring should be done according to the local electric code standards. Ensure you check on the manual guide for any new information related to your water pump.

Use copper wire to ground the system to any metal plumbing. Also, do the same on the motor frame and the control box. The copper wire should have the same thickness as those wires that connects power to the unit. Check on the guide wiring charts for the required wire gauge in order to avoid overheating. Also, avoid grounding on a gas supply line.

Step 3 – Do the wiring

Copper wires come with different colors. Connect the wires to the matching motor leads. For instance, connect black to black, red to red and so on. Any tape splicing used should be water-sealed. Instead of sourcing material separately, consider getting splice kits. Ensure you use the right tape.

Step 4 - Test the Pump

Connect the pump to power supply before you begin installation. Ensure the frequency and voltage is equal to the motor panel. Now, connect the supply wire leads. Next, wire the copper ground to the motor bracket. Text the connection by submerging the spliced wire underwater. Allow the pump to run for a few seconds.

Step 5 - Mount the Control Box

Place the control box far from any weather damage. Controls are sensitive and should be exposed far from heat or moisture. Before installing the pump, ensure all the controls are set automatic. Next, attach the box to the motor leads using copper wires.  Next, install the pump. Use the right process for the pump installation

How do I prime my RV water pump?

Step 1 – Detach the line of the water outlet

On the attaching collar, turn the screw anticlockwise to the point you can easily pull the hose off with ease. The outlet line consist of the clear plastic line connecting your RV to the pump.

Step 2 – Slip the collar off from the outlet line

Check on the outlets that sprays on the pump and attach the rubber hose to it. All you need is to screw down the clamp. Make sure the hose size matches to that of the water line. It should also extend from beneath the same position of the pump.

Step 3 – Prepare around 12-oz. of water. Pour water into the connect hose while holding the outlet over the air.

Step 4 – Place your thumb on top end of the hose and switch the pump on. Allow it to build pressure for around two minutes. Once you start feeling water at the thumb, turn the pump off.

Step 5 – Detach the hose from the pump. Connect the water line for the second time and open one faucet mounted in your RV. You should see water coming out of the faucet once you turn on the pump.  If successful, turn the pump off and close the faucet. Your priming process is successful.

How do you get air out of RV water pump?

There are various methods to get air out of your RV water pump. Use any of these:

1. The Simplest Method

This process requires no special tools. However, a lot of water is used, a reason it should be done at home.

To start, fill the RV’s tank to the brim and turn on the pump to allow water flow through the pipes. Open one faucet far from the tank and allow it sputter water.

After sometime, water will flow normal indicating in presence of air in the pipes. Close the valve.

2. The Efficient Method

In case the simplest method fails, you need an efficient way to clear it out. Proper tools and time is key. First, connect the waterline to a source under pressure such as the faucet inside your house. House water line is considerably stronger than the onboard water pump.

Open all the RV’s water outputs until you get a continuous flow of water. Once the air is out, detach its public water source. The pump will prime perfectly since there is water in the tubes.

RV Water Pump Troubleshooting

RV water pumps allows consistent flow of water from its sources to your RV appliances such as the shower, kitchen, sink and more. Quality models are designed with automated features to give a standard water pressure then switch off automatically when it’s achieved. However, you can’t escape that the pumps are mechanical devices and can develop problems. Some of the common problems include:

  1. Water pump producing excess noise

A lot of noise and vibrations are indicators of poor mounting, damaged bearings, worn brushings, limited intake line and more. The remedy to this is tightening all the loose bolts and replace the damaged bearings, bushings.

  1. Pump

The main possible causes are air leaks, damaged pump, damaged diaphragm, clogged lines, low levels of water and more. To solve this, replenish the water tank, repair damaged valve, impeller, clean any dirt, fix air leaks and tighten the clamp.

  1. Uneven flow of water

The presence of air in the line and suction air leak are the main culprits behind sputtering.  The solution is to repair all the leaks and bleed the water lines.

  1. Pump fails to turn off
In case the pump keeps running despite having closed the faucets, probably there is a multifunction of the switch controller, empty tank, leaks and low pump voltage. Fix this by changing the battery, replenishing the tank, tighten hose connections, replace controller and repair damaged filter hose.

Conclusion

Finding the best 12v RV water pump can be easy when you understand what to look for and why you need one. But this not only involves knowing your water pump requirements but also the requirements of your RV. Check on pump reviews for comparison and guidance on the best units available today. You should know the dimensions, water pressure, water flow and energy consumption of the pump before settling for one. Purchase the best RV water pump today!

FAQs

What is the best 12 volt water pump?

If you are looking for the best RV water pump with reliable ratings, the Shurflo 2088-554-144 is a great option. This unit features extremely excellent features at an affordable price tag. For those who want a self-priming pump that can attain exceptional vertical suction lift for a bigger rig, the Bayite Diaphragm Pump is the real deal.

How many amps does a 12 volt water pump draw?

Typically, a 12V pump draws 5.5amps of electricity. A water pump converts the electricity into mechanical actions. To calculate the amps, divide the watts with volts. A pump with 3 gallons per minute and 55 psi, uses 7.5 amps.

What causes airlock in water pumps?

There are various ways that causes airlock. Purchasing a pump with entrained air, leaky suction line and free falling discharge. The air lock is caused by vapor trapped in high point of a liquid-filled pipe. Gas being denser, it rises high above the liquid.

How long does it take to prime an RV water pump?

The process is easy and takes approximately 30mins. All you need is to fill the fresh water tank, turn on the cold water, open the faucets in your RV and finally turn on the pump near your RV.

Should I leave the water pump on in my RV?

You can leave it running as long your RV is not connected to city water. City water provided enough pressure for your RV. The pump only delivers water out of your RV when not connected to city water. The pump will not consume energy when there is no demand for water.

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