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Best Automatic Bilge Pumps for Boats & Yachts in 2022

When we're in the open water it's important to ensure that we're prepared to face any challenge that may come our way. The next boat may be days or hours away. This is why we require a bilge pump that we can be confident in.

In this post, I'll review the top bilge pumps that you can purchase on your yacht (or the home you live in). The pumps were chosen because of their speed of pumping and how simple they are to operate, and also their high-quality.

Attwood S500IUME 1100GPHSanuke 1500GPH
Ideal for applications with light weightsGreat for medium applicationsIdeal for applications that are heavy.Editor Rating: 4.7Editor Rating: 4.7Editor Rating: 4.8

The Best Automatic Bilge Pumps

1. Attwood Sahara S500 500GPH

This is the best option for small boats.

  • Key Features
  • 3/4" diameter hose
  • Only 1.5A currently drawn
  • 500GPH for vessels with a maximum of 20'
  • The robust and compact assembly can be tucked away into tight spaces.
  • Switch that is mercury-free for total auto-operation

The Attwood Sahara S500 is an automatic bilge pump with the capacity to move upwards of 500 GPH water. It's a compact pump that is ideal for boats with a length of that are up to 20 feet. Made of the finest quality by a manufacturer with over 100 years of expertise working in marine technology.


This is the best choice for applications with a mid-sized footprint.

  • Key Features
  • 3/4" hose diameter
  • Max flow of 750 GPH
  • 3A current draw
  • Anti-airlock operation
  • Robust plastic housing
  • Reed sensor system to allow auto-operation

If you require a little more flow to your 18-25 vessel, Aurelio Tech has an automated pump that has capacities of 750 GPH. All components are constructed of corrosion-resistant materials, including the high-quality stainless steel shaft. Also, it has an easy release strainer that which is easy to clean when required.

3. SEAFLO Automatic 750GPH

Great for vessels up to 25'

  • Key Features
  • 3/4" diameter hose
  • Maximum flow is 750 GPH.
  • 3A current draw
  • Four years of warranty
  • A well-thought-out, compact design

This is a mid-level SEAFLO submersible bilge pump comes equipped with an integrated magnetic float switch to allow for auto operation. It is designed with designed design that permits the pump to pump the water at 750 GPH even in restricted areas. It also comes with 4 years of warranty, which is fantastic.

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4. IUME Boat Bilge Water Pump 1100GPH

Ideal for boats with a length of 30'

  • Key Features
  • High 1100GPH maximum flow
  • 1-1/8" hose diameter
  • 3.8A current draw
  • Built-in float switch to allow to operate automatically
  • There is a manual control for the override
  • Rust-proof and corrosion resistant

If you own a bigger vessel up to 30' in length, you'll require an appropriate pump to meet the requirements of your boat. This IUME auto-bilge marine pump can pump more than 1100 GPH in order to keep you on the water. It's also highly efficient, delivering more water using less energy.

5. MAXZONE Automatic 12V 1100gph

Pump with heavy duty for medium sized boats

  • Key Features
  • 1 1/8" diameter hose
  • High 1100GPH maximum flow
  • 3.8A current draw
  • Simple to clean strainer
  • Water tight seals

MAXZONE offers this fully automatic bilge pump , with the highest quality and durability. Secure watertight seals that you can trust at any time in the ocean, or on the sea. The pump can move at up to 1,100 GPH of water in silence and efficiently. It's the perfect pump for you to carry on the next trip.

6. Sanuke 1500GPH with floating switch

The bilge pump is powerful and has an attractive, narrow design

  • Key Features
  • 1-1/4" diameter hose
  • A powerful pump that can handle 1500GPH of maximum flow
  • Switch for heavy duty
  • Moisture tight seals
  • Design that is narrow for tight spaces

Its Sanuke submersible bilge pump an extremely powerful pump that can handle of 1500 GPH of pumping. It is ideal for vessels that are less than 35 feet. The switch is also of top quality in both the switch as well as the body that can stand up to the harsh conditions of the ocean.

7. Johnson Pumps 2200 Auto Pump with Ultima Switch 2060GPH

Ideal for both recreational and commercial use

  • Key Features
  • 1-1/4" & 1-1/4" diameter hose
  • Reliable Ultima switch
  • Available in 12V and 24V
  • 7.5A current draw
  • Super powerful 2060GPH maximum flow
  • Ideal for recreational as well as commercial vessels.

Johnson Pumps offers this automatic bilge pump that can be used for commercial and recreational use. Every part of the pump, including impeller to the motor and the switch are constructed with the quality you be sure to get from a reliable brand. Its 2060 GPH pump is suitable for use on boats that are up to 40feet long.

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What is the reason I require a Bilge Pump?

Leaks and spills that collect in the bilge can create many problems for the boat and to you.

The reason for this is obvious: excessive water could make the boat sink. However, before you get to this point, you'll begin to notice more humid conditions below. The moisture could accelerate corrosion and rot dependent on the materials used to construct your boat. It could even begin to harm electronic components.

This is when the bilge pump takes action. It removes the water as you attempt to repair the issue or reach the safety of your home.

On the land, bilge pumps are also utilized in aquariums and , sometimes, in various draining systems.

Where is the bilge pump situated?

Bilge pumps are typically situated at the bottom in the vessels. This lets the pump eliminate every last drop of water.

If it fails or becomes overwhelmed by excessive water, a larger backup pump can be placed over it. The third manually operated bilge pump can be advised in the event that the boat is unable to run electrically.

How do automatic bilge pumps operate?

Commonly, automatic bilge pumps operate by using the floating switch. Once the water has reached an appropriate level the switch is able to float to complete an electric circuit that begins the pump.

The water flows into the pump and then passes through a strainer, which filters debris. The water that has been filtered goes through an impeller, which then will push it towards a discharge pipe or hose.

When the water level drops The switch returns to its initial position and the pump ceases to function. In the meantime, waiting until the following cycle.


Bilge pumps are excellent and automated ones are superior. They may cost a little higher than non-automatic ones, but you'll surely be grateful to yourself for making the cost.

Have you had a go at one of the pumps listed above? Do you have any other pumps you think merits inclusion? Tell us about it via the comment section below!

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