---
product_id: 86725859
title: "120W Water Pressure Booster Pump 115VAC,396 GPH,21.7 PSI Household Automatic Home Booster Pump with Water Flow Switch for Home Kitchen Bathroom Irrigation(H15GR-15)"
brand: "kolerflo"
price: "฿17901"
currency: THB
in_stock: true
reviews_count: 8
category: "Koler Flo"
url: https://www.desertcart.co.th/products/86725859-120w-water-pressure-booster-pump-115vac-396-gph-21-7
store_origin: TH
region: Thailand
---

# 120W powerful motor 396 GPH max flow rate 21.7 PSI max pressure 120W Water Pressure Booster Pump 115VAC,396 GPH,21.7 PSI Household Automatic Home Booster Pump with Water Flow Switch for Home Kitchen Bathroom Irrigation(H15GR-15)

**Brand:** kolerflo
**Price:** ฿17901
**Availability:** ✅ In Stock

## Summary

> 💧 Boost your home’s water pressure effortlessly—never settle for weak flow again!

## Quick Answers

- **What is this?** 120W Water Pressure Booster Pump 115VAC,396 GPH,21.7 PSI Household Automatic Home Booster Pump with Water Flow Switch for Home Kitchen Bathroom Irrigation(H15GR-15) by kolerflo
- **How much does it cost?** ฿17901 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/86725859-120w-water-pressure-booster-pump-115vac-396-gph-21-7)

## Best For

- kolerflo enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Full brass fittings and high-quality components ensure durability and corrosion resistance.
- • **Robust Performance:** Delivers steady 21.7 PSI pressure and 396 GPH flow for consistent water supply.
- • **Versatile & Silent:** Perfect for kitchens, bathrooms, irrigation, and solar water heaters with whisper-quiet operation.
- • **Effortless Installation:** Connects with just a wrench—no plumber needed, saving time and money.
- • **Smart Automatic Flow Switch:** Activates only when water flows, optimizing energy use and extending pump life.

## Overview

The KolerFlo 120W Water Pressure Booster Pump (H15GR-15) is a compact, energy-efficient solution designed to enhance household water pressure up to 21.7 PSI with a flow rate of 396 GPH. Featuring an automatic flow switch, durable brass fittings, and easy wrench-only installation, it’s ideal for kitchens, bathrooms, irrigation, and solar water systems. This pump ensures consistent, reliable water pressure while operating quietly and efficiently.

## Description

desertcart.com: 120W Water Pressure Booster Pump 115VAC,396 GPH,21.7 PSI Household Automatic Home Booster Pump with Water Flow Switch for Home Kitchen Bathroom Irrigation(H15GR-15) : Patio, Lawn & Garden

Review: Reasonable Pump - This water booster pump was very easy to install. We used it at our condo. It has helped with adding more pressure to our water especially during showers. I like that it has an automatic button and will only run when you turn on the tap. I found the price to be reasonable. It is a bit loud when you turn it on however you get used to it.
Review: Excellent Water Pressure Booster! - This water pressure booster pump works perfectly and delivers strong, consistent water pressure throughout my home. Installation was easy, and the automatic flow switch turns on and off smoothly when water is in use. It’s quiet, efficient, and ideal for the kitchen, bathroom, and irrigation needs. Great quality for the price—highly recommended!

## Features

- Applicable to the duplex apartment,suburban villas,water heater pressurized,household water pressurized, and the solar water heater pressurized. Our water pressure pump especially suitable for water heater pipe pressurization with insufficient water pressure, to prevent water supply from being cold.
- Max Pressure: 1.5bar (21.7 PSI);Max Flow Rate: 396GPH(25L/min), Max Head: 49.2ft(15m); Connection size: 1/2" NPT; Liquid temperature range: 0 F- +212 F.the water boost pump with flow switch can automatically adjusts to your needs, Increase the pressure of household water tank and keep a steady pressure.
- Easy installation, only need a wrench to connect the pump, saving you the cost of plumbers; the water booster pump is also Energy Saving ;Easy Operate and Silence Working.
- Powerful 120W Motor, High Quality Water flow switch and full brass fittings included, All-in-one unit to make the water booster pump durable and provide enough water pressure for home use.
- We provide 30 days free return and 3 months fittings parts replacement for our water boost pump.If you have any problems for using our products,feel free to contact with us at the first time,we’ll made you satisfied with your purchase.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07J43CWC3 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #121,326 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #109 in Power Water Pumps |
| Brand | KolerFlo |
| Color | H15gr-15 |
| Customer Reviews | 3.8 3.8 out of 5 stars (1,062) |
| Date First Available | October 6, 2018 |
| Included Components | flow switch, pump body |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.3 pounds |
| Item model number | H15GR-15 |
| Manufacturer | kolerflo |
| Material | Brass |
| Maximum Flow Rate | 6.6 Gallons Per Minute |
| Maximum Lifting Height | 49.2 Feet |
| Part Number | KF301 |
| Power Source | Corded Electric |
| Product Dimensions | 6.9"L x 3.94"W x 3.6"H |
| Style | Pressure,Solar Water |
| UPC | 681013755950 068101375595 |
| Voltage | 110 Volts |

## Product Details

- **Brand:** KolerFlo
- **Color:** H15gr-15
- **Manufacturer:** kolerflo
- **Material:** Brass
- **Maximum Flow Rate:** 6.6 Gallons Per Minute
- **Maximum Lifting Height:** 49.2 Feet
- **Power Source:** Corded Electric
- **Product Dimensions:** 6.9"L x 3.94"W x 3.6"H
- **Style:** Pressure,Solar Water
- **Voltage:** 110 Volts

## Images

![120W Water Pressure Booster Pump 115VAC,396 GPH,21.7 PSI Household Automatic Home Booster Pump with Water Flow Switch for Home Kitchen Bathroom Irrigation(H15GR-15) - Image 1](https://m.media-amazon.com/images/I/71TdscB0a3L.jpg)

## Available Options

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

## Questions & Answers

**Q: Will the pump shut off atomatically once i turn my shower off ?**
A: yes it will  if you have the switch set right    its got a manual and a auto setting on the switch    manual setting is marked like this I   auto is marked like this II   so just set it on auto and forget about it     if your still worried have someone stand real close to the pump and someone else turn the water on and then off and you will hear the pump kick on then off     hope this helps   randy

**Q: Just got it installed and doesn’t matter if switch is on 1 or 2 it keeps going on and off with no water running! What’s the deal?**
A: With my pump, if the switch is in position 1 or 2 the pump only comes on when the system pump is calling for pressure. Could you have a leak? It sounds like you may have a slight pressure drop and the pump is cycling to satisfy the decrease in system pressure. Possibly blow by on one of your system valves. I would look for a small leak or a valve not holding. Hope it helps.

**Q: Do you install the check valve before or after booster pump?**
A: There is not check valve provided. If you mean the flow switch, it was installed after booster pump following installation instructions and arrow direction.

**Q: Does anyone know what the thread is on the output side. Looks like 1/2 in. pipe but it is not?**
A: 1/2 NPS on output of flow switch

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reasonable Pump
*by S***C on January 13, 2026*

This water booster pump was very easy to install. We used it at our condo. It has helped with adding more pressure to our water especially during showers. I like that it has an automatic button and will only run when you turn on the tap. I found the price to be reasonable. It is a bit loud when you turn it on however you get used to it.

### ⭐⭐⭐⭐⭐ Excellent Water Pressure Booster!
*by M***O on January 27, 2026*

This water pressure booster pump works perfectly and delivers strong, consistent water pressure throughout my home. Installation was easy, and the automatic flow switch turns on and off smoothly when water is in use. It’s quiet, efficient, and ideal for the kitchen, bathroom, and irrigation needs. Great quality for the price—highly recommended!

### ⭐ Used & missing parts, then broke in under 2 hrs
*by A***N on April 15, 2023*

I ordered the KolerFlo H15GR-15 and received a mangled box of incorrectly packed pump and missing parts. See attached photo. I immediately reordered a replacement pump. I received it yesterday in good condition and properly & neatly packed. I unpacked it and got it installed around 8:30pm as a backup pump for our gravity fed water system. Our main pumping system is currently broken and we’re waiting on parts, so I purchased the KolerFlo as a backup system. After installing the KolerFlo, I turned it on to the “Move” position and proceeded to purge the lines of air bubbles. Afterwards, I came back and switched the KolerFlo to “Auto”. The pump would switch on then off, then on, then off, for about 5 minutes. Around an hour later, my wife went to take a shower and told me there was no water pressure. I went and checked the pump and it was still set to Auto, but would not turn on the pump. I switched it to Move again and it started pumping. My wife took her shower. Afterwards I set the pump to Auto and it started the surging, on, then, off, then on for about 10 times. I checked a faucet and there was no water coming out. Obviously, the pressure switch is garbage. This is almost exactly as described by another reviewer. Do NOT buy this junk! I’ll be sending it back.

## Frequently Bought Together

- KOLERFLO 120W Water Pressure Booster Pump 115VAC,396 GPH,21.7 PSI Household Automatic Home Booster Pump with Water Flow Switch for Home Kitchen Bathroom Irrigation(H15GR-15)
- SHURFLO (255-313) 1/2" Twist-On Pipe Strainer
- SharkBite 1/2 Inch Check Valve, Push to Connect Brass Plumbing Fitting, PEX Pipe, Copper, CPVC, PE-RT, HDPE, U2008-0000LFA

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/86725859-120w-water-pressure-booster-pump-115vac-396-gph-21-7](https://www.desertcart.co.th/products/86725859-120w-water-pressure-booster-pump-115vac-396-gph-21-7)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-06*