Best Tankless Water Heater Flush Kit – Review & Buyer’s Guide 2022

Have you noticed a sudden decrease in the heater’s water flow rate? Are you situated in an area with hard water?

The flow rate decreases when the internal components wear out or scale, and limestone has formed in your heater. 

Things can get very quirky if you do not take any action at the right time. Therefore, cleaning it by using the best tankless water heater flush kit is recommended.

The majority of us have a tankless unit in our residences. Over the years, their popularity has increased to a great extent, especially in the new generation. 

If you want to keep it in perfect working condition, you should take good care of it and maintain it properly. It is mandatory to keep it germ-free. 

We use it for our day-to-day activities such as showering, bathing, washing utensils, and many others. Our life depends on water, so flushing it once or twice a year is critical to get pure water. 

This article tells you about the 10 best tankless water heater flush kit, so you can confirm your unit lasts for an extended duration. 

Don’t employ an expensive contractor. By using the right kit, you can perform this task on your own. 

10 Best Tankless Water Heater Flush Kit

1. My PlumbingStuff – Tankless Water Heater Flushing Kit – Best Overall

If you describe your appliance for the first time, this best tankless water heater flush kit lowes might make the task a little easier. 

It arrives with a 5-gallon first-grade plastic bucket, a 32-ounce bottle of flow32 descaler, two 5-foot stainless steel hoses that are anticipated to be attached directly to the valves. 

You will see specialized ports on the hoses that can be connected to the pipes without having to detach the heater. 

If we talk about the flow32 descaler, it is eco-friendly and robust, and fast at eliminating any heater accumulation. 

It is heavily fortified with penetrating and wetting elements that dissolve the scale, rust, and other deposits from the tankless devices. 

You will also receive a Zoeller 42-0007 floor sucker pump that is super-strong and sturdy. 

You can use the high-performance pump fully or partially submerged. 

The brand also provides instructions on how to use this flush kit as well as technical details. 

It is essential to follow the instructions to ensure the unit’s optimal efficiency, lower debris buildup, and improve water’s quality. 

If you already have a 5-gallon bucket in your house, this part of the DIY tankless water heater flush kit will be unnecessary.

Specifications:

2. Chromex Tankless Water Heater Flush Kit – Great Value

This 6 piece flush kit offers an excellent value for money. By using it, you can maintain and extend the lifecycle of your device. 

It includes a 5-gallon bucket with a lid made of high-quality materials so that it will last longer. 

You will also acquire a 1/6 HP pump, elevated pump grate, descaler solution, and 2 PVC hoses. 

If we talk about the cleaning solution, it can help you get rid of scale deposits from tankless machines and get clean water free of contaminations. 

Its solvent-free and citric-acid based formula can be used safely with different types of metals, rubber, ABS plastic hoses, and many other materials. 

You can also take advantage of it for portable water heating systems as it is non-corrosive. 

The best thing about the hoses is that you can easily attach them to the heater’s valves. The kit takes 30 minutes or less to clean the unit thoroughly. 

The instructions on how to use it are mentioned on the list. By following the instructions, you can flush the machine yourself. 

However, if you want, you can also hire professional services. This product features a 1-year warranty and stress-free returns.

Specifications:

3. Rheem RTG20124 Flush Kit – Tankless Gas Water Heater

If you are on the lookup for a kit that is easy to set up, then you are going to love this item. Though it is a tad bit costly, it can meet all your needs. 

This Rheem tankless water heater cleaning kit arrives with a great and dependable pump that can offer you a long service life. 

It is designed to serve you for a long time. Also, it is durable, which means it can endure immense pressure while descaling the heater. 

The pump is the primary reason for the kit being overpriced. It is extremely powerful and can swiftly circulate 7 gallons in 60 seconds through the tankless unit. 

Besides, you will acquire two hoses and a bucket too. The bucket can hold 5 gallons, so it highly suitable for all sorts of solutions you want to use. 

Rubber material has been used to make the hoses, and they can be linked effortlessly to the appliance’s isolation valves. 

They resemble washing machine hoses, so users are not much happy with it. 

Rheem flush kit works well with all kinds of heaters, and it helps you quickly get rid of the scale and other substances. 

By using it, you can enhance your unit’s life and keep it clean. 

The biggest benefit of using this kit is that you will be able to use the dishwasher without facing any hassle. 

You will obtain easy to follow instructions by the brand on how to utilize it effectively.

Specifications:

4. Whitlam KITC FLOW-KIT

It is a top-rated Rinnai tankless water heater flush kit with a 4.4 positive rating from 258 users. Its solution is of stellar quality and heavy-duty. 

It is supremely effective as well as non-toxic and safe to use. The solution has no smell and works much better than vinegar. 

With this kit, you will obtain all things you need to descale your heater. Also, it arrives with a quart of flow aide that is sufficient for flushing one unit. 

If you have not cleaned the device for more than a year, you should grab this kit to be used for multiple applications. 

You will receive a pump with it, which is smaller, but it can descale the appliance in just 45 minutes. It is heavyweight and works at 350 gallons per hour.

Two rubber hoses are five feet long and can be attached to the heater’s valves. Furthermore, it can reach the bucket, but it depends on how far you want to take it. 

The weakest feature of this cleaning kit is its hoses that have a leakage problem. According to reviews, some users received a kit where the hoses functioned fine. 

On the other hand, few folks got one where they end up leaking. You can prevent leakage by using a channel lock to close the link. You can also hand tighten them.

Specifications:

5. Kelaro Tankless Water Heater Flushing Kit

It is another premium quality flush kit that can cater to all your requirements. 

It features 6 color-coded rubber hoses that can be linked with the tankless machine’s isolation valves conveniently. The kit is designed to boost the heater’s performance and lifespan. 

Besides, the pump is durable and super-powerful. It means it can clean the unit within half an hour or even less. 

You will get a 1/8 HP utility pump and easy to follow instructions that enable you to get started with the descaling process without having to hire professional services. 

Also, it includes a 3.5-gallon sturdy bucket with a lid and Calci-free flush cleaner. It works better than vinegar and does not have a strong odor. 

If you are willing to enhance your appliance’s life, we recommend investing in it because it gives excellent value for money. 

The hoses are six feet tall, so they are relatively longer than other hoses. Just because of this trait, you can clean the farthest parts of the device. 

Moreover, its outstanding descaling element is free from acid, so it can efficiently eliminate the sediment and rust production while keeping the interior regions safe. 

Apart from this, the pump power is 21 gallons per minute, allowing you to finish the whole task within the shortest span. 

Speaking of its accessibility, its components are created by bearing the essential standards in mind. That’s why; it is compatible with all types and brands of tankless heaters. 

Specifications:

6. Eccotemp EZ-Flush System Descaler Kit with Pump and Solution

If you want pure convenience, nothing can beat this affordable Rheem tankless water heater cleaning kit. 

It comes with a pump and bucket, so there is no need to buy them separately. 

You can clean the unit by just putting a quart of descaling solution and a gallon of water into the device itself. 

This self-contained kit will clean it within the shortest period. 

Then, you have to connect the hoses to activate it. It is super easy to set up and use. 

Its price is also very low compared to other flush kits available on the market. 

It can help eliminate any scale, lime, rust, and other sorts of deposits buildup in all types of water-based equipment. 

The manufacturer has designed it to work correctly with portable water systems. It has a compact size that is easier to use and storage. 

It includes a stellar quality descaler solution that quickly dissolves the toughest accumulation.

It is also a non-toxic concentrate and licensed by NSF/ANSI 60 for use as a descaler in tankless units. 

It is equipped with proprietary pulsating lush technology that is liable for removing all kinds of blockages in the heaters. 

This cost-effective kit includes an integrated pump and 2 five-foot rubber hoses. The pump is pretty decent because it offers you 350 gallons of flow per hour. 

It is not very sturdy, but it can perform its job proficiently. Also, you will receive a flushing kit and 1 quart of flushing solution. 

You can take advantage of it for regularly cleaning your device. Another attractive thing about it is its 1-year factory product guarantee. 

Specifications:

7. Rectorseal 68711 Calci-Free Tankless Water Heater Flush Kit 

Calci-free best tankless water heater flush kit electric is designed to clean water heaters’ coils completely. 

It restores pressure and flow in a few moments and does not have a strong odor. It is a distinct, cost-effective, and biodegradable cleaner. 

It contains a mixture of corrosion inhibiting, organic, and inorganic elements. The manufacturer provides easy to follow instructions, so it will be easy for you to use it. 

The good thing is that it is faster compared to other cleaning kits. Moreover, it arrives with a 2-pound flush, 5 gallons pail, hose lines, and a durable pump. 

What we appreciate about it is that it is a one-stop-shop. It contains everything you need to finish the job correctly on the first attempt. 

It is worth it to spend your hard-earned bucks to have this Rheem tankless water heater cleaning kit. 

According to reviewers, hoses are not good enough. You might have to double up the rubber seal on the hose connector to seal it. 

Also, they are made of cheap quality material, so you may have to buy new hoses separately. 

However, you can buy it to save a lot of money you will have to give to the professional plumber. 

The plastic pieces and buckets used for raising the pump are excellent and easy to store once you finish the job. 

This kit allows you to remove all the deposits from your unit and increase its efficiency and lifespan.

Specifications:

8. Hercules 35235 Haymaker Tankless Water Heater Descaler Kit

Are you looking for the complete best tankless water heater flush kit lowes that can improve your device’s performance and life? 

If so, then look no further because Hercules Haymaker’s cleaning kit is here to solve all your portable heater issues. 

It is crafted to remove scale, rust, and all other deposits and maintain the unit’s remarkable performance. 

The solution works quickly and easily dissolves inorganic ingredients that block pressure and flow to restore circulation and heat transfer efficiency. 

The citric-acid based solution is made of solvent-free formula, so it is compatible with rubber, metals, and many other substances. 

Additionally, it is extremely tough on scale, rust, and sulfates, so you can call it an excellent all-arounder product.

It is safe to use for water heating systems as it is non-corrosive. The solution is one of the best solutions available out there. It descales the appliances very well. 

The kit comes with all vital components, including the pump, a 3.5-gallon bucket, and a cleaning solution quart. 

The pump is very powerful and can handle up to 550 gallons in one hour. If you use it regularly, it will enhance the lifecycle of the machine.

Specifications:

9. Kelaro Tankless Water Heater Flushing Kit – Just add Vinegar Descaler

Tankless water heaters require regular maintenance for outstanding performance and competence, just like other appliances. 

If you take care of them properly, they can last for over twenty or more years. 

This cleaning kit is specifically designed to help you keep your device well-maintained without putting in too much effort. 

It comes with all things you need to clean your unit. You get step by step instructions that are easier to understand and follow. 

You just have to connect the hoses to your appliance’s isolation valves and add your vinegar. 

If you want, you can flush your device yourself or hire professional services. 

It works well with Rheem, Rinnai, Ecosmart, and all other types of portable heaters. 

It needs 2 to 3 gallons of white vinegar that are not included in the kit.

Some tankless heater companies recommend using vinegar. Therefore, you should check if your heater can be flushed with vinegar or not. 

You can save a lot of money if vinegar is already available in your house. 

You obtain a 1/8 HP utility pump and a 3.5-gallon bucket with EZ open lid with this best tankless water heater flush kit.

Additionally, they provide you with color-coded hoses that are six feet long and instructions. The lid of the bucket is very flexible so that you can remove it effortlessly. 

Specifications:

10. DrainX Tankless Water Heater Descaler Kit

This kit is created to help the homeowners ensure their unit continues to operate at an optimum level. 

Over time, deposits buildup in it, so it stops working efficiently and does not offer pure water. 

If you are located in a region with hard water, it means your water has high mineral content. 

It is generated when water saturates through the buildup of chalk and limestone. That’s why; it is critical to remove the deposits. 

DrainX descaler kit is designed for both do it your-sellers and professionals. It helps you preserve your device’s performance and enhance its lifecycle. 

The cleaning powder is biodegradable, so it works much better than vinegar. 

You can rely on it for removing inorganic, organic, and corrosion causing accumulation. It comes with a 3.5-gallon bucket with a lid and descaler powder. 

Besides, it includes 2 steel hoses and a 1/6 HP pump. You can easily attach the hoses to the isolation valves of the unit. 

The flush kit takes only 30 minutes or less to entirely clean the machine. Usage instructions are mentioned on the kit, and you will also get a separate infographic. 

Specifications:

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What Is Rheem Tankless Water Heater Cleaning Kit? (Buyer Guide)

This special equipment is exclusively designed for descaling all types of water heating systems. It is used to preserve and boost the life of the devices. 

The primary purpose of utilizing them is to save a considerable amount that you invest in annual maintenance. 

It ensures that they run smoothly and the water flow is uninterrupted. When they work correctly, they consume less power, so you save money on power bills. 

But, before going out to purchase it, you have to remember a few things. It consists of everything that is needed for flushing the appliance successfully. 

They have several types; they all arrive with hoses, a bucket or tank, a cleaning agent, and a pump. It also comes with instructions to assist you in figuring out how to utilize it. 

Make sure the kit you are buying is compatible with your specific type of tankless heater. 

Do You Need The Rinnai Tankless Water Heater Flush Kit?

It is a remarkable tool that you must get for your home. It is even better if your tankless unit is deployed in the bathroom. 

Descaling them is obligatory; that is why; these kits are created to do the same exactly. The need for descaling is reliant on your location. 

If there is hard water in your area, you will have to flush it every six months. If you don’t have hard water, you will have to flush it every year. 

Employing a professional plumber every time you encounter your unit issues can cost you a hefty amount, especially when it needs to be flushed. 

On the other hand, the best tankless water heater flush kit is a one-time expense, and you will have to put a few efforts on your end. 

If you are a do it yourself kind of person, they are a superb option for you. 

Standard heaters come with a filter in the container. They experience the sediment production at the tank’s bottom, so they do not affect the water flow. 

However, tankless units don’t have a tank. As a consequence, mineral accumulation is much faster, and sediment production happens at the flow pipe. 

It stops the water from flowing naturally, causing countless issues to the interior parts. That’s why you need a descaling kit. 

It helps you save yourself from purchasing a new appliance and provides an easy solution for your troubles. 

Besides, you won’t have to call a professional and wait for them to come and flush it.

Why It Is Better To Purchase The Whole Kit Instead Of Getting All Components Separately?

Many people want to know why they should acquire the whole kit instead of just purchasing each component separately. 

You should buy the full kit for your convenience. When you order a kit, it comes with everything you need to clean your device. 

However, when you get them separately, there are greater odds that you will get them all at separate times. 

Some of them are maybe unavailable in your area, and you may have to wait for them to come again. 

We recommend you purchase it from Amazon because the local hardware store may charge extra pennies for both the kit and separate parts.

Benefits Of Using The DIY Tankless Water Heater Flush Kit  

Enhance The Performance

It comes with a powerful pump with an incredible pump cycle. It must have a five-gallon flush tank, five-foot-long hoses, and detailed directions. 

The hose is an essential component that helps you to reach out to the farthermost part effortlessly. 

It features a distinct design and high performance that enables you to reinstate your unit’s performance and clean the internal parts. 

It is equipped with technology, so you can easily fit it into your tankless machine’s isolation valves.

Can Be Utilized With All Sorts Of Heaters

Another advantage of using them is that these universal kits can be used on all kinds of water heating systems. 

It can be infuriating and distressing to purchase a kit and find out that it is not compatible with your device. 

There is no need to mention that it is also a waste of expense. 

Just like tanked units, tankless appliances are also powered by gas or electricity. The best kit works well with either of these.

Safe To Use

It is always safe to use for internal parts of the machine. You can take advantage of it without overthinking or having doubt. 

Not all kits have a cleaning solution, so it is an excellent option if you get one. 

The solution satisfies all the safety factors so that it won’t damage the parts. It is non-acidic and biodegradable. 

So, you can use your heater after flushing it. Make sure the kit and hoses are lighter in weight.

Frequently Asked Questions