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Kelaro

Kelaro Tankless Water Heater Flushing Kit with Flow-Aide Biodegradable Descaler

Based on 929 reviews
Condition: New
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$134.97
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Nov 26 – Nov 28
Order within 18 hours and 55 minutes

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At a glance

Condition
New
Style
Stainless Steel Hoses
Capacity
3.5 gal
Weight
6.26 kg
Color
black,white
Material
Stainless Steel
Power Source
Ac/dc

Features 5

  • Helps maintain the performance and extend the life of your tankless hot water heater.
  • Everything you need in one kit to descale your tankless water heater in 45 minutes or less | Suitable for DIY Homeowner use with easy directions.
  • Includes 1/8 HP Utility Pump, 6 Ft Stainless Steel Color Coded Hoses, 3.5 Gallon Bucket with EZ-Off Lid, Instructions & Flow-Aide Biodegradable Descaler.
  • Easily connects to tankless isolation valves using supplied 6' Color Coded Hoses

Description

Kelaro was founded in 2016 to help consumers find feature-rich, premium appliance accessories for DIY and small business installations without the inconvenience and limitations of traditional hardware stores. Like all appliances, tankless water heaters require regular maintenance for optimal performance and efficiency. With proper maintenance, they can last over twenty years. This cleaning kit comes with everything you need to maintain your water heating system. It includes step-by-step instructions that are easy to follow and quickly connects to your tankless isolation valves using the supplied hoses. Kit is reusable by simply replacing the cleaning agent. Calcium deposits don't stand a chance! Find the best Kelaro Flush Kit for you: Heater elements attract minerals from water and quickly add layers of scale during normal use. The layers get caked on and decrease the surface area available to heat up water. Scale build-up causes water to heat slower and decreases the maximum temperature of water coming out of your heater. Scale will keep adding layers until the system is no longer able to heat water going through your tankless water heater - meaning cold showers are in your future! Tankless water heaters don't run efficiently with scale and require more energy (gas or electricity) to run. Extra energy costs add up month after month. You could hire a plumber to do the maintenance, or save even more - and do it yourself. Annual maintenance using a Kelaro Flush Kit keeps your system running efficiently and saves you energy. Even better, the kit can be reused year after year - just replace the cleaning agent.

Specs 18

Brand Kelaro
Capacity 3.5 gallons
Power Source Ac/dc
Special Feature Includes Flow-Aide Biodegradable Descaler for DIY Descaling
Color black,white
Special Features Includes Flow-Aide Biodegradable Descaler for DIY Descaling
Mount Type Wall
Item Weight 6.26 kg

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 26 – Nov 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

A must for you tankless
Style: Stainless Steel Hoses
Works perfectly, couldn't believe how it cleaned my tankless heater. Water came out black. This is a must if you have a tankless.
Reviewed in the United States on March 22, 2026 by paul
Great fishing kit. Easy to use. Comes with everything.
Style: Stainless Steel Hoses
Review Image by Johnny L
Great value! My neighbor’s heater broke after 4+ years usage without descaling, and I’ve never cleaned my heater ever as well. So I know I have to flush my heater ASAP. Found this kit which comes with everything, so I gave it a try. The experience was great. Instructions are easy to follow, and the result was shockingly good. The bucket of water started as brown with the solution unit and ended up being extremely dark at the end of the cycle. I’ll recommend. ... show more
Reviewed in the United States on April 3, 2021 by Johnny L
It worked for me
Style: Stainless Steel Hoses
This worked as it was supposed to. I followed the instructions with no problems. I did read the read comments about the pump, however I followed the instructions and had no problems.
Reviewed in the United States on May 7, 2026 by Floyd Cornett
Tankless Water Heater descaling process
Style: Stainless Steel Hoses
All you need for Tankless Water Heater descaling process! Very explicit and easy to follow directions.
Reviewed in the United States on July 7, 2026 by Amazon Customer
VG kit, but instructions need a little help
Style: Stainless Steel Hoses
This may be slightly overpriced for what you get, but you get everything you need and a bucket to store it in. I modified the steps slightly based on reading them and my experience. - Use distilled water for that gallon you mix with the quart solution. Distilled water will have a slight edge in helping to grab the calcium/mineral build up. - Ensure to turn off power AND gas if it's a gas heater. - After the main 45 minute run, dump the water, refill with another 1.5 gal of fresh water. Run again for 5 minutes into the bucket circulating. I was surprised at how much darker this batch was then the main. Repeat again for 3 go round. - If tankless water heater then -> Disconnect the sump pump from the cold hose and slightly turn the top of the cold hose to allow air in and water to go down the hot line into the bucket. This is your chance to clean the intake water filter. - Remove cold water hose and sump, secure cold water side caps and prep to turn the cold side back on. Turn off hot water service valve, and cold water service valve, disconnect the hot water short line and hook up a garden hose to it. Open the hot water service valve and turn on the cold water. Flush the system by running the intake cold water through the system and out the hot water service line. Run for at least two minutes until clear. - At this point you could run up to five minutes out of the garden hose. But even with this you will have an odor in the water line. - Turn off the cold water valve to stop the flush, close service valves and replace caps. - If you have an inlet air filter this would be a good time to open the service door and clean it before you forget. - Now, and this is important, go to the first faucet in the hose where the hot water line is going to feed and remove the aerator. The initial water coming into the unit may contain some specs or minor sediment and you don't want them to foul your aerator which could mean replacing it. - Recheck all valves a final time. - Turn on the cold water inlet. You will hear water entering the unit. - Plug the tankless water heater back into power, if gas powered turn on the gas. - Turn on the tap/faucet inside the house sans aerator and run some hot water. - Reset the control pad clock/etc if/as required. For my experience, I could still smell the chemical in the water maybe up to 10 gallons later. As we had a recirculating pump that came on before I completed the flush, we had some of the water recirculate through the cold lines. To flush those I flushed the toilets in the house and ran some faucets until I could not small the chemicals. In the evening there was still a faint odor in the line so we ran a dishwasher load overnight to help clear that out. I would consider doing this process every 6-9 months if it extended the life the the water heater. Still looking for information on that. This process is seems simple overall, just flush the tank. But because of the number of valves, filters, and steps involved, it is good to read through the directions at least 2x and to think about the process as you go along. You can probably think of other optimizations to it. And if Amazon let people post comments like they used to years ago, we could help each other out more directly. I can recommend this product. The price beats the $150-200 for a plumber to do it and the $250-300 your gas company may charge. Finally, realize that even Rinnai recommends flushing with distilled white vinegar. ... show more
Reviewed in the United States on October 25, 2021 by inayat2012 on youtube
Cheap Pump
Style: Stainless Steel Hoses
The pump died within 30 mins. Not that mad about it, kit was good other than that. Edit: Kelaro customer support reached out to me, the pump has an auto shutoff. If the pump starts to draw too much power due to sediment build up it will shut itself off. You just have to unplug and change out your bucket and plug back in. Works just fine now. ... show more
Reviewed in the United States on June 15, 2024 by Alex p.
Don’t skip this if you have a tankless
Style: Stainless Steel Hoses
Review Image by Chris J.
Make sure to clean your tankless. This product does the trick and it is very simple and easy to use.
Reviewed in the United States on February 6, 2026 by Chris J.
Inferior product
Style: Stainless Steel Hoses
Ordered back in September to have when my tankless water heater was a year which was february but went to do in January. Kit was all there but the pump did not work. It hummed. But wouldnt pump. I tapped it on bottom of bucket and it started working but that only lasted about 10 min and it was just back to humming but not pumping. Cant return it because it is past the return date. Lesson learned, use it immediately so you can return. ... show more
Reviewed in the United States on January 29, 2026 by Marsha
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