---
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: "$230.81"
currency: USD
in_stock: true
reviews_count: 6
category: "Prostormer"
url: https://www.desertcart.us/products/281305827-sump-pump-prostormer-3500-gph-1hp-submersible-clean-dirty-water
store_origin: US
region: United States of America
---

# 1HP high power motor 3500 GPH max flow rate Auto/manual float switch modes 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:** $230.81
**Availability:** ✅ In Stock

## Summary

> 💦 Stay dry, stay ahead — the Prostormer pumps like a pro so you don’t have to.

## 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?** $230.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/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

- • **Power Through Any Flood:** 1HP motor delivers rapid 3500 GPH pumping to keep your space dry and safe.
- • **Smart Auto & Manual Control:** Built-in float switch toggles between automatic water-level sensing and manual override for ultimate control.
- • **Tailored Fit for Every Hose:** Three outlet sizes (1", 1¼", 1½") ensure perfect compatibility and optimized flow.
- • **Durable & Corrosion-Resistant:** Thermoplastic body and sealed structure resist debris and corrosion for long-lasting reliability.
- • **Easy Maintenance for Peak Performance:** Flush impeller after use to prevent clogging and extend pump life—because downtime is not an option.

## Overview

The Prostormer 1HP Submersible Sump Pump delivers a powerful 3500 gallons per hour flow rate with versatile outlet sizes and a built-in float switch for automatic or manual operation. Designed with a durable thermoplastic body and sealed construction, it efficiently handles clean or dirty water in pools, ponds, gardens, flooded cellars, and irrigation systems. Its smart design balances high performance with easy maintenance, making it an essential tool for proactive water management.

## 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 - desertcart.com

Review: Float panel modification - 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.
Review: Great Pump - UPDATE! 7/16/2025 After almost a year now we guesstamated over 800 hours and it still pumps water. This pump in on a concrete block 2' 19" deep inside a 55 gallon drum with the top cut off and the bottom side up with a hinged door. It has pumped sand and leaves with more water than I can imagine from storms, hurricanes and a broken pipe for a week. I am buying another one just like it to be sure we don't flood out. After all that it has done I can not trust it to keep going. It has paid for itself more times than I can count. Used it for an automatic lift station for my new french drain. Out of the box it pumped far more water than expected but the auto would not function without shaking the pump. This was during a 4 inch downpour. Took it out of the hole, tinkered with the float and it began the auto great as seen in the video. Checked it today and the hole was filled, pump completely submerged. Shook it and bang! It began working perfectly again. The problem is, I am not going out in a Florida thunderstorm to kick-start it every time. I'll keep it for something later, but it's getting replaced with a REAL, reliable automatic sump pump.

## 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 designed for continuous operation (e.g., as a circulation pump for ponds), as such use will significantly reduce the pump's service life. After each use, the impeller should be flushed to prevent sand and other debris from clogging the internal shaft.
- 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 |
|---------------|-------|
| ASIN | B08KDKKK7R |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #57,559 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #33 in Sump Pumps |
| Brand | Prostormer |
| Cord Length | 16 Feet |
| Customer Reviews | 3.9 3.9 out of 5 stars (1,529) |
| Date First Available | September 29, 2020 |
| Finish | Submersible Clean/Dirty Water Pump |
| Horsepower | 1 Horsepower |
| Included Components | Diameter outlet adapter |
| Item Weight | 10 pounds |
| Item model number | PSWP03D |
| Manufacturer | Prostormer |
| Material | Thermoplastic |
| Maximum Flow Rate | 58.33 Gallons Per Minute |
| Maximum Lifting Height | 26 Feet |
| Part Number | PSWP03D |
| Pattern | Water Pump |
| Power Source | ac |
| Product Dimensions | 8.75"L x 7.75"W x 13.5"H |
| Shape | 1HP Sump Pump |
| Special Features | Float Switch |
| Specific Uses For Product | Build-in Float Switch |
| Style | 1HP |
| Voltage | 120 Volts (AC) |

## Product Details

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

## 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 Pump
*by A***Y on August 23, 2024*

UPDATE! 7/16/2025 After almost a year now we guesstamated over 800 hours and it still pumps water. This pump in on a concrete block 2' 19" deep inside a 55 gallon drum with the top cut off and the bottom side up with a hinged door. It has pumped sand and leaves with more water than I can imagine from storms, hurricanes and a broken pipe for a week. I am buying another one just like it to be sure we don't flood out. After all that it has done I can not trust it to keep going. It has paid for itself more times than I can count. Used it for an automatic lift station for my new french drain. Out of the box it pumped far more water than expected but the auto would not function without shaking the pump. This was during a 4 inch downpour. Took it out of the hole, tinkered with the float and it began the auto great as seen in the video. Checked it today and the hole was filled, pump completely submerged. Shook it and bang! It began working perfectly again. The problem is, I am not going out in a Florida thunderstorm to kick-start it every time. I'll keep it for something later, but it's getting replaced with a REAL, reliable automatic sump pump.

### ⭐ It Pumps.... That is about where it ends.
*by P***. on November 15, 2021*

I have a sump pit I installed. Now "Gravity" will allow this pit to let water flow out but only after it fills to almost full. So in my case, it's kind of a fail over. Only if we get heavy rain do I even worry about it. That said, i wanted to put a pump in to help keep it lower because the GROUND around (and even under) my house/basement is saturated and I wanted to try and help it out quicker (relatively speaking). Additionally, I want to be able to avoid the overflow of my sump (natural drainage) on the heavier flow. THus I needed a Sump that would come on/off automatically. This one looked like a good fit. I purchased it, got the appropriate adapters needed to hook up my hose (for now) and let it go. Worked like a charm. After about a week, of going down and checking on it periodically, I started to notice that my sump basin was near full (at the level where it would drain naturally out the top pipe). The pump SHOULD have been running and SHOULD have come on when the basin is only about a third of the way full. Just shaking the hose attached to the sump, which jarred the sump pump, was enough to cause it to kick on. Then it would work fine (on and off) for a short period. (It's easy for my to check because I get about .5 gallons of constant flow into my sump basin on a regular basis). However it eventually would no longer come on. I left for almost a week to go hunting, came home after a few good rain storms, went to my basement and the floor was all wet. We had gotten enough rain to overwhelm my sump basin's natural draining (without the pump) which is why I want the sump pump in the first place. I tried to like this pump. I like it's power, I like how well it pumps out. I like how quiet it is, but in the end, I need a reliable pump that will turn on and off reliably, and this pump is NOT it. If it cannot do the main thing for which I needed it for, it's no good to me. I submitted my return/refund request and will look for a different model.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-23*