1100 GPH Automatic Boat Bilge Water Pump 12V - Fast, Automatic Drain

Our review of the 1100 GPH Automatic Boat Bilge Water Pump 12V looks at who needs a reliable, self-activating pump and why this unit stands out. It is aimed at small to medium recreational boat owners who need a compact, durable solution to remove water quickly without wiring a separate float switch. The biggest reason to buy is its built-in electronic reed sensor that enables fully automatic operation and a high 1100 gallons per hour capacity that clears bilges fast, reducing time spent on manual pumping and the risk of water damage.

Key Features

• Automatic activation: The built-in electronically controlled reed sensor runs the pump without a separate float switch, so it responds to rising water automatically.
• High flow rate: With a capacity of 1100 gallons per hour, it removes large volumes of water quickly to keep a bilge dry and reduce strain on onboard systems.
• Complete plumbing kit: Includes 6 ft of 1-1/8 in hose, two clamps and a thru-hull connector so most installations can be completed with parts in the box.
• Corrosion resistance: Constructed from materials rated for harsh marine environments and IP68 waterproof protection to resist salt and moisture.
• Easy installation: Straightforward instructions and included fittings make it approachable for owners comfortable with basic boat plumbing.

Who It's For

The pump is best for owners of fishing boats, cruisers, runabouts, small yachts and even kayaks who need a compact, automatic bilge pump that handles moderate to heavy water ingress without additional switches. It's also a good fit for those who prefer a ready-made kit with hose and clamps included to avoid sourcing multiple parts.

This is less appropriate for very large vessels that require higher-capacity or redundant bilge systems or for installations needing an external float switch for integration with complex alarm systems. Professionals specifying fleet-grade, multi-stage bilge setups should evaluate higher-end models.

Pros & Cons

Pros

• Strong 1100 GPH flow clears bilges quickly and reduces downtime.
• Automatic reed sensor eliminates need for a separate float switch for simpler wiring.
• Durable, corrosion-resistant construction with IP68 protection for marine use.
• Includes 6 ft of hose, two clamps and thru-hull connector for convenient installation.

Cons

• Built-in automatic sensor may not suit systems that require a separate manual or alarm-triggered float switch.

Specifications

Flow rate	1100 gallons per hour
Voltage	12V
Hose diameter	1-1/8 in
Included hose length	6 ft
Package contents	Pump, hose, 2 clamps, thru-hull connector, instructions
Ingress protection	IP68 waterproof

Our Verdict

The 1100 GPH Automatic Boat Bilge Water Pump 12V is a practical, good-value choice for recreational boat owners who want a high-flow, automatic bilge pump that resists corrosion and comes with the fittings needed for installation. It delivers reliable performance for most small to medium boats, and the included plumbing parts save time, making it a sensible upgrade for owners prioritizing convenience and durability.

Frequently Asked Questions

Does the pump require a separate float switch?
The pump includes a built-in electronically controlled reed sensor and does not require a separate float switch for automatic operation.

What hose size is supplied?
The kit includes 6 ft of hose with a 1-1/8 in diameter and two clamps for secure connections.

Is it suitable for saltwater use?
Yes, the pump is constructed from corrosion-resistant materials and has IP68 protection for use in harsh marine environments.