Prostormer 1HP 3700GPH Submersible Sump Pump with Auto Float Switch

Meet the Prostormer Sump Pump, a practical solution for moving water quickly and reliably across homes and outdoor spaces. With a 1 HP motor and a capable 3700 GPH rating, it tackles drainage tasks from flooded basements to pond maintenance while remaining portable enough for frequent use. The durable thermoplastic body resists corrosion, and a raised base plate helps keep debris from collecting in tight sump pits. This pump is designed for versatility, whether you are clearing excess water after heavy rain, transferring irrigation water, or supporting pool and aquarium setups.

How it works

The unit uses an automatic float switch to detect rising water. When water level rises, the switch signals the motor to start; as water is removed and the level drops, the pump stops. For scenarios with consistently low water levels, you can lock the float switch on the pump to maintain continuous operation.

• 1 HP power delivers up to 3700 gallons per hour for faster drainage in larger jobs
• Three outlet sizes — 1 inch, 1-1/4 inch, and 1-1/2 inch — accommodate different hose diameters
• Durable thermoplastic construction with a higher base plate to reduce debris buildup
• Automatic ON/OFF operation driven by the float switch for easy use
• Sealing structure supports full submersion and protects components in wet environments

Important setup tip: start with the pump fully submerged, at a slight angle, and keep it underwater for 20 to 30 seconds to expel trapped air before first use.

Operational notes

• Lock-on mode can run continuously; disconnect power if water movement stops to prevent overheating
• Automatic cycling occurs as water levels rise and recede, guided by the float switch

Real-world uses

• Drain and drain-down tasks in pools, ponds, and irrigation systems
• Water removal for basements, garages, and flooded spaces
• Transfers for aquarium maintenance and water changes