---
product_id: 281305827
title: "Sump Pump, Prostormer 3500 GPH 1HP Submersible Clean/Dirty Water Pump with Build-in Float Switch for Pool, Pond, Garden, Flooded Cellar and Irrigation"
brand: "prostormer"
price: "€ 99.74"
currency: EUR
in_stock: true
reviews_count: 6
url: https://www.desertcart.ie/products/281305827-sump-pump-prostormer-3500-gph-1hp-submersible-clean-dirty-water
store_origin: IE
region: Ireland
---

# 1HP High Power Motor 3500 GPH Max Flow Rate Auto Float Switch Control Sump Pump, Prostormer 3500 GPH 1HP Submersible Clean/Dirty Water Pump with Build-in Float Switch for Pool, Pond, Garden, Flooded Cellar and Irrigation

**Brand:** prostormer
**Price:** € 99.74
**Availability:** ✅ In Stock

## Summary

> 💦 Stay dry, stay ahead — the Prostormer pumps your worries away!

## Quick Answers

- **What is this?** Sump Pump, Prostormer 3500 GPH 1HP Submersible Clean/Dirty Water Pump with Build-in Float Switch for Pool, Pond, Garden, Flooded Cellar and Irrigation by prostormer
- **How much does it cost?** € 99.74 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/281305827-sump-pump-prostormer-3500-gph-1hp-submersible-clean-dirty-water)

## Best For

- prostormer enthusiasts

## Why This Product

- Trusted prostormer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Use Cases:** Perfect for pools, ponds, flooded cellars, gardens, and irrigation—be ready for any water challenge with one reliable pump.
- • **Smart Auto Operation:** Built-in float switch automatically activates pump at preset water levels, giving you hands-free peace of mind.
- • **Power Through Any Flood:** 1HP motor delivers rapid water removal, outperforming standard 3/4HP pumps for faster, hassle-free drainage.
- • **Custom Fit Hose Compatibility:** Three outlet sizes (1", 1¼", 1½") ensure seamless connection to your existing setup for optimized flow.
- • **Durable & Corrosion-Resistant:** Thermoplastic body and sealed structure protect against debris and corrosion, extending pump life in harsh conditions.

## Overview

The Prostormer 1HP Submersible Sump Pump delivers a powerful 3500 GPH flow rate with a durable thermoplastic body and built-in float switch for automatic water level control. Designed for clean and dirty water, it features multiple outlet sizes for versatile hose compatibility and a corrosion-resistant build, making it ideal for flood control, irrigation, and water management in pools, ponds, and cellars.

## Description

Sump Pump, Prostormer 3500 GPH 1HP Submersible Clean/Dirty Water Pump with Build-in Float Switch for Pool, Pond, Garden, Flooded Cellar and Irrigation

## Features

- Kindly Tip 1: When you start using the pump, it must be fully submerged in water at a slight angle and hold it underwater for 20 to 30 seconds to ensure all trapped air is thoroughly expelled before operation
- Kindly Tip 2: The device is not suitable for continuous operation (e.g.as recirculation pump for ponds).This type of use will substantially shorten the pump's life expectancy
- 1HP High Power: Prostormer Sump Pump uses 1HP power, which is more efficient than ordinary 3/4HP sump pump; Max 3500GPH rating tackles any draining job at a fraction of the time
- Multi Outlet Sizes: 3 different diameters outlets (1 inch ,1-1/4 inch, 1-1/2 inch) to adapte for different size hoses as needed according to the flow rate. The bigger the flow is, the wider the outlet should be
- Manual Mode: Set the switch to the MANUAL positon the pump will now not automatically switch off but carry out pumping, even if theremaining water level is reached and the pump runs dry. You should cut off the power immediately to prevent the coil from getting burned
- Automated Mode: Set the switch to the AUTO position. Once you have plugged the device into the socket, the pump will switch on automatically when the water exceeds the start-level and switch off when the stop-level hasbeen obtained.this means that the pump can be left on at all times and will keep the waterin a cellar or boat, for example, at the required level.bear in mind that this pump is notdesigned to be used continuously, it must be switched off at regular intervals
- Sealing Structure & Durable Construction: The sump pump features a durable sealing structure and the durable thermoplastic body keeps the pump from corrosion. The higher base plate which assures the prevention of debris collection in the sump pit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Prostormer |
| Material | Thermoplastic |
| Style | 1HP |
| Product Dimensions | 8.75"L x 7.75"W x 13.5"H |
| Power Source | ac |
| Item Weight | 10 Pounds |
| Maximum Flow Rate | 58.33 Gallons Per Minute |
| Maximum Lifting Height | 26 Feet |
| Voltage | 120 Volts (AC) |
| Horsepower | 1 Horsepower |
| Manufacturer | Prostormer |
| Specific Uses For Product | Build-in Float Switch |
| Part Number | PSWP03D |
| Item Weight | 10 pounds |
| Item model number | PSWP03D |
| Finish | Submersible Clean/Dirty Water Pump |
| Pattern | Water Pump |
| Shape | 1HP Sump Pump |
| Cord Length | 16 Feet |
| Special Features | Float Switch |
| Included Components | Diameter outlet adapter |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Prostormer
- **Material:** Thermoplastic
- **Style:** 1HP
- **Product Dimensions:** 8.75"L x 7.75"W x 13.5"H
- **Power Source:** ac
- **Item Weight:** 10 Pounds
- **Maximum Flow Rate:** 58.33 Gallons Per Minute
- **Maximum Lifting Height:** 26 Feet
- **Voltage:** 120 Volts (AC)
- **Horsepower:** 1 Horsepower

## Images

![Sump Pump, Prostormer 3500 GPH 1HP Submersible Clean/Dirty Water Pump with Build-in Float Switch for Pool, Pond, Garden, Flooded Cellar and Irrigation - Image 1](https://m.media-amazon.com/images/I/61zzak7HAGL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Float panel modification
*by E***T on June 10, 2025*

Worked fine through hurricane Milton. Here it is about 9 months later had a big rain and it did not automatically start up. I tilted it and it started right up. The float was not rising to the top to activate the switch. There was an air pocket in the front float area so I removed the float area cover and drilled 4 small holes in it to release any air that may get trapped in the chamber around the float. Started filling the pit with water and the pump came on automatically. Tested 4 times, looks like the issue has been resolved. The cover that is around the float was set in there so tightly that no air could escape. Just in time for the next hurricane season.

### ⭐⭐⭐⭐⭐ Great workhorse of a pump for accumulating rainwater!
*by J***D on March 18, 2024*

Purchased this pump to manage standing water in backyard during Southern California Winter 2024. This unit worked great in auto-shutoff mode and I was able to leave it plugged in for over a week to remove accumulated water.I used this inside a 12" catch basin connected to a 75-foot 2 1/4" corrugated pipe from Harbor Freight to push rainwater to the street. The only concern with this unit is it has a taller intake so you won't be able to suck up all the water...you will leave about 1/2" before too much air cuts off the suction.PROS- Super powerful 1hp motor that easily moved water from 13" catch basin through 75' (yes, feet) of collapsible tubing on mostly flat ground.- Auto-shutoff mode worked very well when leaving unit plugged in for over a week during California Winter 2024 storms.- Has adjustable internal float switch where you can increase the depth of water when using auto-shutoff mode.- Comes with lots of fitting attachments to meet different applications.CONS- Has minimum clearance of about 1/2" and will leave about 1/2" of water regardless of auto or manual mode. I had hoped for only about 1/4", but this is not a big deal.- So powerful, the unit jerks a little when turning on in auto mode. For my application, I could have gone with smaller horsepower, but the auto-shutoff mode worked great.

### ⭐ Started off great.
*by C***S on May 27, 2023*

The media could not be loaded. I have had this pump for less than a year and up until recently it had been performing great. I have only used it to pump my hot tub out twice and a neighbor's tiny kid pool out once. 3 days ago we were hit my a huge storm that put down a TON of rain and everyone's window wells were filling up with water. I had water 8 inches up on one of my basement windows as well as my next door neighbor. We grabbed this pump to help us bail water put of our window wells and in the middle of all this it quit working reliably. It let me down when I needed it the most. We ended up having to toss it aside and just bucket out the water. I works for a while then it slows way down to where water is hardly coming out as if it's just chu chu chugging. Then finally it will slowly pick up the pace and and within less than a minute it slows way back down to barely any output and chuggs for a bit then will speed back up. I tried recreating it using a bucket in this video and and it shows it chugging and then finally ramping back up. Then it almost tipped and sprayed me. Sometimes when I trial it in a bucket, the bucket will be almost all the way full before it starts to even put out water. Kind of frustrating in the middle of a flash flood that was basically flooding our entire neighborhood.

## Frequently Bought Together

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-01*