---
product_id: 83897425
title: "QwikDescaler + Concentrated Descaler Solution, Tankless Water Heater Descaling Solvent for Heat Exchanger, Quickly Dissolves Scale, Lime, Tarnish and Deposits, 1 Gallon"
brand: "qwikproducts"
price: "¥24758"
currency: JPY
in_stock: true
reviews_count: 11
category: "Qwik Products"
url: https://www.desertcart.jp/products/83897425-qwikdescaler-concentrated-descaler-solution-tankless-water-heater-descaling-solvent-heat
store_origin: JP
region: Japan
---

# Rapid scale dissolution Color-change indicator Metal protection formula QwikDescaler + Concentrated Descaler Solution, Tankless Water Heater Descaling Solvent for Heat Exchanger, Quickly Dissolves Scale, Lime, Tarnish and Deposits, 1 Gallon

**Brand:** qwikproducts
**Price:** ¥24758
**Availability:** ✅ In Stock

## Summary

> ⚡ Don’t let scale slow you down—QwikDescaler keeps your heat flowing strong!

## Quick Answers

- **What is this?** QwikDescaler + Concentrated Descaler Solution, Tankless Water Heater Descaling Solvent for Heat Exchanger, Quickly Dissolves Scale, Lime, Tarnish and Deposits, 1 Gallon by qwikproducts
- **How much does it cost?** ¥24758 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/83897425-qwikdescaler-concentrated-descaler-solution-tankless-water-heater-descaling-solvent-heat)

## Best For

- qwikproducts enthusiasts

## Why This Product

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

## Key Features

- • **Flushes Scale Fast:** Rapidly clears lime, tarnish & mineral deposits to restore peak heater efficiency.
- • **Safe & Eco-Friendly:** Zero VOCs and safe to handle, protecting you and the environment during use.
- • **Visual Dosage Alert:** Color-changing formula signals exactly when to add more—no guesswork needed.
- • **Extend Equipment Life:** Prevents corrosion and buildup that erode heat exchangers, saving costly repairs.
- • **Proactive Tarnish Defense:** Built-in metal protectant guards your unit during and after cleaning for lasting durability.

## Overview

QwikDescaler+ is a concentrated, safe, and highly effective descaling solution designed specifically for tankless water heaters and heat exchangers. It rapidly dissolves stubborn scale, lime, and mineral deposits while featuring a unique color-change indicator for easy monitoring. Its advanced metal protectant formula not only cleans but also prevents tarnishing and corrosion, extending the life and efficiency of your unit. Trusted by DIY pros and backed by rave reviews, it’s the smart choice to avoid costly repairs and maintain optimal performance.

## Description

Buy QwikDescaler + Concentrated Descaler Solution, Tankless Water Heater Descaling Solvent for Heat Exchanger, Quickly Dissolves Scale, Lime, Tarnish and Deposits, 1 Gallon on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Excellent product for experienced DIY'ers - Second year of using this product to descale my Navien NPE-180A2 unit. Year 1 of doing the flushes myself, I mixed up the necessary amount of solution per the dilution rates and followed the instructions for how to flush my system. In total, took about an hour with the flushing process being about 35-40 minutes. The amount of material this solution was able to remove. I remember seeing what the technician got out on the very first flush done on the system and I feel like this removed a lot more. Year 2 of doing the flushes myself, similar results and time it took to use. Extremely happy with the product and results.
Review: Excellent solution for descaling the worst mineral build-up inside tankless water heater - Works great. This product saved me thousands of dollars! I used it to clear out scales from a tankless water heater that appeared to be beyond repair. We bought a new house with a tankless water heater and did not realize that we also needed a water softener until about five years later. Once we almost completely lost hot water, a repair man told me the only solution was to completely replace it for multiple thousands of dollars. I decided to ignore his device and using Youtube and watching him, I was able to figure out how to use this descaler and a small pump to clear out all the mineral build up. The instructions said not to go more than 30 minutes, but I did 4-5 hours for 3-4 different days. Each time the "hot" water got a little warmer. Eventually, I got the hot water to work completely. With our new water softener system and this product, I think I solved the problem. This product saved me thousands of dollars!

## Features

- QUICKLY FLUSH FLOW PASSAGES: Use this descaler solution to rapidly improve efficiency and open flow passages of heaters and other tankless heat exchangers. Multipurpose cleaning supplies, flushes out water scale, lime, tarnishing, and other mineral deposits.
- EFFECTIVE SOLUTION BUT ALSO VERY SAFE: QwikDescaler descaler for tankless water heater is not only extremely effective at flushing out the unwanted buildup in your unit, but it’s very also safe. Safe to handle and gives off ZERO VOCs.
- IT’S EASY TO TELL WHEN YOU NEED TO ADD MORE: There’s no guesswork with the QwikDescaler+ tankless water heater descaler. If more descaling solution is needed, it will turn from red to yellow, so you’ll get visual confirmation to add more.
- EXTEND LIFE OF YOUR UNIT & REDUCE COSTS: Flushing your tankless water heater at least once a year is a great way to help extend its life. This water heater descaling solution will eliminate buildup that will erode the walls and increase energy costs.
- PROTECTS AGAINST TARNISHING: Contains a powerful metal protectant designed to protect against damage, break down, and tarnishing during and after cleaning. The metal protectant and color change indicator provide improved protection compared to concentrated acid, helping to increase operation and lifetime.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B073SBLWR7 |
| Best Sellers Rank | #19,581 in Health & Household ( See Top 100 in Health & Household ) #261 in All-Purpose Household Cleaners |
| Customer Reviews | 4.6 4.6 out of 5 stars (800) |
| Date First Available  | July 7, 2017 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | QT7710 |
| Manufacturer  | Mainstream Engineering |
| Product Dimensions  | 12 x 12.5 x 12 inches; 5 Pounds |

## Product Details

- **Brand:** QwikProducts
- **Item Form:** Liquid
- **Material Feature:** Biodegradable, Non-Toxic
- **Scent:** Unscented
- **Specific Uses For Product:** Water Heater

## Images

![QwikDescaler + Concentrated Descaler Solution, Tankless Water Heater Descaling Solvent for Heat Exchanger, Quickly Dissolves Scale, Lime, Tarnish and Deposits, 1 Gallon - Image 1](https://m.media-amazon.com/images/I/713flEP9FiL.jpg)

## Available Options

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

## Questions & Answers

**Q: For the seller only, please: Would you recommend this product be used to effectively descale a countertop ice machine w/a built-in water line?**
A: Yes, this product is great for descaling water lines with mineral buildup. If the ice machine has buildup inside the waterlines this should effectively clear those lines.

**Q: Will this work for an LG front-loader washing machine? I need it to clean the pump, tub, and drain lines.**
A: I would not trust this product on heavy buildup.

**Q: for 40G tank how much I need?**
A: You should rig up a pump and let it circulate for about 45 mins.

**Q: What is in this besides hydrochloric acid? My tankless water heater manufacturer Rinnai seems to only recommend vinegar, no harsh chemicals.**
A: I do not know other than what's on the label, but I have two Rinnai units and have used it on both, two times now, adn have not seen any ill effects.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent product for experienced DIY'ers
*by M***Y on January 5, 2026*

Second year of using this product to descale my Navien NPE-180A2 unit. Year 1 of doing the flushes myself, I mixed up the necessary amount of solution per the dilution rates and followed the instructions for how to flush my system. In total, took about an hour with the flushing process being about 35-40 minutes. The amount of material this solution was able to remove. I remember seeing what the technician got out on the very first flush done on the system and I feel like this removed a lot more. Year 2 of doing the flushes myself, similar results and time it took to use. Extremely happy with the product and results.

### ⭐⭐⭐⭐⭐ Excellent solution for descaling the worst mineral build-up inside tankless water heater
*by O***R on September 21, 2025*

Works great. This product saved me thousands of dollars! I used it to clear out scales from a tankless water heater that appeared to be beyond repair. We bought a new house with a tankless water heater and did not realize that we also needed a water softener until about five years later. Once we almost completely lost hot water, a repair man told me the only solution was to completely replace it for multiple thousands of dollars. I decided to ignore his device and using Youtube and watching him, I was able to figure out how to use this descaler and a small pump to clear out all the mineral build up. The instructions said not to go more than 30 minutes, but I did 4-5 hours for 3-4 different days. Each time the "hot" water got a little warmer. Eventually, I got the hot water to work completely. With our new water softener system and this product, I think I solved the problem. This product saved me thousands of dollars!

### ⭐⭐⭐⭐⭐ Very safe and effective product.
*by D***B on November 12, 2025*

Very effective product. I did not know to flush my tankless water heater. So we did not flush it for 5 years. This product removed almost all of the build up the first use. Easy to use. Safe to use too.

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-26*