---
product_id: 522662410
title: "Tankless Water Heater Flushing Kit, 1/6 HP Pump, 2 Hoses, 3 Gal Pail | Complete tankless water heater flushing kit with 1/6 HP pump, two 6 ft hoses, 3 gal pail, adapters, washers and lid opener."
brand: "6699"
price: "S$254"
currency: SGD
in_stock: true
reviews_count: 13
category: "6699"
url: https://www.desertcart.sg/products/522662410-tankless-water-heater-flushing-kit-1-6-hp-pump-2
store_origin: SG
region: Singapore
---

# 1/6 HP energy-efficient motor 1100 GPH max flow rate 16.5 ft max pumping height Tankless Water Heater Flushing Kit, 1/6 HP Pump, 2 Hoses, 3 Gal Pail | Complete tankless water heater flushing kit with 1/6 HP pump, two 6 ft hoses, 3 gal pail, adapters, washers and lid opener.

**Brand:** 6699
**Price:** S$254
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your hot water flowing flawlessly — flush like a pro, avoid costly repairs!

## Quick Answers

- **What is this?** Tankless Water Heater Flushing Kit, 1/6 HP Pump, 2 Hoses, 3 Gal Pail | Complete tankless water heater flushing kit with 1/6 HP pump, two 6 ft hoses, 3 gal pail, adapters, washers and lid opener. by 6699
- **How much does it cost?** S$254 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/522662410-tankless-water-heater-flushing-kit-1-6-hp-pump-2)

## Best For

- 6699 enthusiasts

## Why This Product

- Trusted 6699 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful Yet Quiet Pump:** 1/6 HP motor delivers 1100 GPH flow at whisper-quiet operation—no noisy interruptions.
- • **Durable & Portable Design:** Compact 9.8" bucket and lightweight pump with 10-ft power cable for easy storage and mobility.
- • **Ergonomic Bucket Lid Opener:** Anti-slip grip with finger grooves and leverage hook makes opening the bucket lid a breeze.
- • **Effortless Tankless Heater Maintenance:** Complete kit with pump, hoses, bucket & lid opener for seamless annual flushes.
- • **Precision-Engineered Hose & Adapter Set:** Two 6-ft hoses with washers and adapters ensure leak-proof, hand-tight connections every time.

## Overview

The 6699 Tankless Water Heater Flushing Kit is a professional-grade maintenance solution featuring a 1/6 HP submersible pump with 1100 GPH flow and 16.5 ft max lift. It includes two 6-foot hoses, adapters, washers, a 3-gallon bucket, and an ergonomic lid opener, designed for easy, efficient flushing of tankless water heaters to extend their lifespan and maintain peak performance. Ideal for savvy homeowners and pros who want to save on costly repairs with simple annual upkeep.

## Description

6699 Tankless Water Heater Flushing Kit, 1/6 HP Pump, 2 Hoses, 3 Gal Pail | Complete tankless water heater flushing kit with 1/6 HP pump, two 6 ft hoses, 3 gal pail, adapters, washers and lid opener. - desertcart.com

Review: Product does well for intended purpose. - My reason for purchasing this pump is I needed a submersible pump to flush 2 gallons of 5% white vinegar solution through a Navien NPE-A02 tankless water heater for 45 minutes for corrosion control. This water heater is a new installation and the flush is only needed once a year for residential usage. I performed this a few months after installation to gain experience on how long the process takes, what I need to perform this myself, and how much of a mess it might be. The instructions are generic as this pump can be used for a wide-range of applications; when instruction steps conflict, use the conservative instructions for the equipment or appliance you're running fluid through; it's much more expensive to replace a tankless water heater ($10,000) than a submersible pump ($150). The pump casing has black paint on yellow plastic. The paint is easily smeared and wiped off, but it's cosmetic; pumps used for this type of application are expected to become dirty and covered in whatever residue or sediment is in the fluid is being pumped. This kit includes a yellow hard-plastic wrench to open the top, but it's unnecessary; The lid seals are designed to be peeled off by hand, and the four edges can be pulled outward by hand to remove the lid. Hoses are colored red and blue but are equally useable. This kit includes extra rubber gaskets. These gaskets should be used to prevent leaks at hose connections. Hose connections should only be hand-tight unless the instructions say otherwise you you're connecting to a pressurized system; for my usage the tankless water heater was isolated from the house's water supply (120psig) and was open to atmosphere (The pump takes from the bucket and gives back into the bucket.). Important note about the 2 black hard-plastic adapters mentioned in the instructions: Hand-tighten only! Do not over-tighten! The adapters can crack and leak if too much force is applied! Only one of the adapters is needed; it connects the pump outlet to the hose. This may not be the pump for your usage if you need to connect it to a high-pressure system! Pump has no on/off button; Just plug it in to start and unplug to stop. The pump and cable can be submerged in liquid, but the electrical connection to the 120V source must not get wet for your safety. If the pump needs to be in a fluid that is deep (like a pool, tank, etc.), attach a long rope to the plastic loop built into the pump case; This pump does not float and will sink. For electrical safety, make sure the pump isn't submerged so deep the pump's electrical plug is submerged; Some users will use extension cords rated for use outside (and that's ok), but remember the connection plugs and sockets should not be wet or submerged. The pump is fairly quiet; It's as loud as an aquarium filter pump. You'll know immediately if the pump is moving water. A card is included in the kit that shows the different flow rates at different heights in-case you have to move water vertically some distance in pipes or hoses. Once it's running and moving fluid, I recommend continuously monitoring it if the fluid doesn't go back to the pump suction, or checking on it every few minutes if the fluid is coming right back into the suction (See video). If the fluid source's level drains completely, the pump will run out and shut off to protect itself, but doing that repeatedly will burn out or melt the motor windings over time. When that happens, you have to replace the pump. An important note about using this pump not mentioned in the instruction is that you MUST PRIME THE PUMP BEFORE USE. Failure to do this WILL result in no flow (Pump runout condition; pump impeller is spinning an air pocket as fast as it can instead of the fluid.) and after a few minutes the pump shuts off due to overheating the motor windings. DOING THIS REPEATEDLY WILL CAUSE FAILURE OF THE PUMP (Instructions mention this part.). The instructions say the pump must be submerged in fluid, but that's it. To prime the pump, tilt the pump to the side while the bottom end of it is in the fluid until bubbles rise to the surface. When the bubbling stops, start the pump. You will hear the pump take suction on the fluid. Fluid should immediately exit the pump outlet and go through any hoses connected to the pump's outlet. If you hear the pump energize and spin but there's no flow, the pump is spinning an air pocket at the impeller and rapidly heating the motor windings. Turn off the pump and again tilt the pump to remove more air bubbles from the impeller. Cleaning the pump's impeller and black suction strainer is easy; A Philips-head screwdriver is needed to remove the black hard-plastic suction strainer. Rinse, scrub and remove any debris and replace. Overall this product does well for it's intended purpose and should serve you well provided you respect it's limits.
Review: Complete, Easy-to-Use Kit — Made Flushing Simple - This kit has everything you need to flush a tankless water heater without making multiple trips to the hardware store. The pump is plenty powerful, the hoses fit perfectly, and the bucket size is just right for the job. I especially liked that it came with adapters, washers, and even a bucket lid opener, which shows someone actually thought about the full process. Setup was straightforward and the pump ran smoothly the entire time. If you’re even moderately handy, this kit will save you a lot of money compared to calling a plumber. Solid build quality and great value — highly recommend

## Features

- 【Tankless Heater Clean Kit】This cleaning kit comes with everything you need to maintain your water heating system. Helps maintain the performance and extend the life of your tankless hot water heater. Easy to follow and quickly connects to your tankless isolation valves using the supplied hoses. All you need to do is mix 1 gallon of vinegar or biodegradable cleaner with 1 gallon of water to flush the tankless water heater. ( The vinegar and biodegradable cleaning agent are not included)
- 【Submersible Sump Pump】1/6HP energy-efficient motor with thermal overload protection, has the ability to deliver water to maximum height 16.5 feet and flow rate is 1100GPH, quietly running. Portable small pump with 10 feet power cable for easy use.
- 【Easy to Use】This kit includes 3 gallons bucket with a bucket lid opener, 1/6HP utility pump with 2 adapters and 2pcs 6’ x 1/2” PVC hoses with washers. They are easy to install, can be directly connected to use.
- 【Bucket Lid Opener】Adopts ergonomic design, reasonable and reliable, with a long enough handle to provide maximum leverage; anti-slip grip is with finger grooves for safe handling; allowing you to open the lid with the least effort, there is a hook shape on the opener mouth for easily prying.
- 【Specification】Model: SUB1100KIT02; Pump Volts/Hertz: 115V/60Hz; Pump Power: 1/6 HP; Pump motor full load: 1.5 Amps; Pump Max Head: 16.5 FT; Pump Max Flow: 1100 GPH; Pump Max Submersion Depth: 23 FT; Pump Max Fluid Temperature: 95 ℉; Pump Size: 5.9 x 5.9x 8.3inches; Bucket Size: 9.8 x 9.8 x 11.4 inches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BTNX6YWM |
| Best Sellers Rank | #3,755 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Water Pump Accessories |
| Brand | 6699 |
| Brand Name | 6699 |
| Color | Yellow and White |
| Customer Reviews | 4.5 out of 5 stars 791 Reviews |
| Flow Rate | 18 gpm |
| Horsepower | 0.17 hp |
| Included Components | 2pcs PVC Hoses, 3 Gallons Bucket, Bucket Lid Opener, Sump pump with two adapters |
| Item Dimensions L x W x H | 9.8"L x 9.8"W x 11.4"H |
| Item Type Name | SUB1100KIT02 |
| Item Weight | 9.2 pounds |
| Manufacturer | Volcanorbuy |
| Manufacturer Part Number | SUB1100KIT02 |
| Manufacturer Warranty Description | Seller and manufacturer combined one year warranty after date of purchase |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Lifting Height | 16 feet |
| Model Number | SUB1100KIT02 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 9.8"L x 9.8"W x 11.4"H |
| Product Style | 1/6HP, 1100GPH Plastic Pump |
| Specific Uses For Product | For flushing tankless water heaters |
| Style | 1/6HP, 1100GPH Plastic Pump |
| Unit Count | 1 Count |
| Voltage | 115 volts |

## Product Details

- **Brand:** 6699
- **Color:** Yellow and White
- **Item Weight:** 9.2 Pounds
- **Material:** Plastic
- **Maximum Flow Rate:** 18 Gallons Per Minute
- **Maximum Lifting Height:** 16 Feet
- **Power Source:** Corded Electric
- **Product Dimensions:** 9.8"L x 9.8"W x 11.4"H
- **Style:** 1/6HP, 1100GPH Plastic Pump
- **Voltage:** 115 Volts

## Images

![Tankless Water Heater Flushing Kit, 1/6 HP Pump, 2 Hoses, 3 Gal Pail | Complete tankless water heater flushing kit with 1/6 HP pump, two 6 ft hoses, 3 gal pail, adapters, washers and lid opener. - Image 1](https://m.media-amazon.com/images/I/71DbUohJeaL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Product does well for intended purpose.
*by R***S on July 23, 2026*

My reason for purchasing this pump is I needed a submersible pump to flush 2 gallons of 5% white vinegar solution through a Navien NPE-A02 tankless water heater for 45 minutes for corrosion control. This water heater is a new installation and the flush is only needed once a year for residential usage. I performed this a few months after installation to gain experience on how long the process takes, what I need to perform this myself, and how much of a mess it might be. The instructions are generic as this pump can be used for a wide-range of applications; when instruction steps conflict, use the conservative instructions for the equipment or appliance you're running fluid through; it's much more expensive to replace a tankless water heater ($10,000) than a submersible pump ($150). The pump casing has black paint on yellow plastic. The paint is easily smeared and wiped off, but it's cosmetic; pumps used for this type of application are expected to become dirty and covered in whatever residue or sediment is in the fluid is being pumped. This kit includes a yellow hard-plastic wrench to open the top, but it's unnecessary; The lid seals are designed to be peeled off by hand, and the four edges can be pulled outward by hand to remove the lid. Hoses are colored red and blue but are equally useable. This kit includes extra rubber gaskets. These gaskets should be used to prevent leaks at hose connections. Hose connections should only be hand-tight unless the instructions say otherwise you you're connecting to a pressurized system; for my usage the tankless water heater was isolated from the house's water supply (120psig) and was open to atmosphere (The pump takes from the bucket and gives back into the bucket.). Important note about the 2 black hard-plastic adapters mentioned in the instructions: Hand-tighten only! Do not over-tighten! The adapters can crack and leak if too much force is applied! Only one of the adapters is needed; it connects the pump outlet to the hose. This may not be the pump for your usage if you need to connect it to a high-pressure system! Pump has no on/off button; Just plug it in to start and unplug to stop. The pump and cable can be submerged in liquid, but the electrical connection to the 120V source must not get wet for your safety. If the pump needs to be in a fluid that is deep (like a pool, tank, etc.), attach a long rope to the plastic loop built into the pump case; This pump does not float and will sink. For electrical safety, make sure the pump isn't submerged so deep the pump's electrical plug is submerged; Some users will use extension cords rated for use outside (and that's ok), but remember the connection plugs and sockets should not be wet or submerged. The pump is fairly quiet; It's as loud as an aquarium filter pump. You'll know immediately if the pump is moving water. A card is included in the kit that shows the different flow rates at different heights in-case you have to move water vertically some distance in pipes or hoses. Once it's running and moving fluid, I recommend continuously monitoring it if the fluid doesn't go back to the pump suction, or checking on it every few minutes if the fluid is coming right back into the suction (See video). If the fluid source's level drains completely, the pump will run out and shut off to protect itself, but doing that repeatedly will burn out or melt the motor windings over time. When that happens, you have to replace the pump. An important note about using this pump not mentioned in the instruction is that you MUST PRIME THE PUMP BEFORE USE. Failure to do this WILL result in no flow (Pump runout condition; pump impeller is spinning an air pocket as fast as it can instead of the fluid.) and after a few minutes the pump shuts off due to overheating the motor windings. DOING THIS REPEATEDLY WILL CAUSE FAILURE OF THE PUMP (Instructions mention this part.). The instructions say the pump must be submerged in fluid, but that's it. To prime the pump, tilt the pump to the side while the bottom end of it is in the fluid until bubbles rise to the surface. When the bubbling stops, start the pump. You will hear the pump take suction on the fluid. Fluid should immediately exit the pump outlet and go through any hoses connected to the pump's outlet. If you hear the pump energize and spin but there's no flow, the pump is spinning an air pocket at the impeller and rapidly heating the motor windings. Turn off the pump and again tilt the pump to remove more air bubbles from the impeller. Cleaning the pump's impeller and black suction strainer is easy; A Philips-head screwdriver is needed to remove the black hard-plastic suction strainer. Rinse, scrub and remove any debris and replace. Overall this product does well for it's intended purpose and should serve you well provided you respect it's limits.

### ⭐⭐⭐⭐⭐ Complete, Easy-to-Use Kit — Made Flushing Simple
*by A***. on December 31, 2025*

This kit has everything you need to flush a tankless water heater without making multiple trips to the hardware store. The pump is plenty powerful, the hoses fit perfectly, and the bucket size is just right for the job. I especially liked that it came with adapters, washers, and even a bucket lid opener, which shows someone actually thought about the full process. Setup was straightforward and the pump ran smoothly the entire time. If you’re even moderately handy, this kit will save you a lot of money compared to calling a plumber. Solid build quality and great value — highly recommend

### ⭐⭐⭐⭐⭐ Worked great
*by E***4 on June 22, 2026*

Used to flush my tankless water heater. Easy to use, everything you need in one bucket. I used a bigger bucket to flush mine, but the bucket is good to keep everything in.

## Frequently Bought Together

- 6699 Tankless Water Heater Flushing Kit Includes 1/6HP Submersible Sump Pump with Two Adapters & 3 Gallons Pail with Bucket Lid Opener & Two 1/2” Dia X 6’ PVC Hoses with Washers
- J.C. Whitlam FLOW32 Flow-Aide System Descaler ,32 ounces (1 quart) , White
- Rectorseal 68708 1.2-Pound Calci-Free Tankless Water Heater Flush

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-08-21*