10 Best Tankless Water Heater Cleaning Kits [Reviewed – 2022]

Many people are using different (electric/non-electric) water heaters in their homes. After long use of water heaters, the dirty and other small particles are clogged into the water heater and water pressure slows. Many chemicals and kits are made for internal cleaning water tanks that effectively clean the water heater and help to increase water pressure. 

Manufacturers usually suggest their water heaters be flushed out and cleaned once a year. The cleaning kits eliminate any build-up of minerals like calcium. The water heater cleaning process is a very easy job if you are done with the right equipment. The water heater cleaning kit consists of a pump, a bucket and hoses. 

All water heater cleaning guidance required with components, that everyone easily can clean without any plumber help. We have sorted different brands’ best tankless water heater cleaning kits so that you can easily get the same brand name cleaning kit according to the heater brand. For best results must ensure the same brand cleaning kit according to the brand. 

Top 10 Best Tankless Water Heater Cleaning Kits Of 2022

Detailed Features & Reviews

1. Superior Descaler Pump Kit

Review: The Superior descaler pump kit is specifically built to clean and descale most tankless water heaters. The descaler kit has a 1/6HP durable pump that works a long time, 3.5-gallon pail with screw top lid easy to use and move, and solid 6-foot stainless hoses not breakable and 7oz non-toxic descaler powder easily to mix in a bucket and the bottom screen filters out debris, rust, lime, dust and is easily cleanable.

2. Kelaro Tankless Flushing Kit

Review: The Kelaro tankless flushing kit also works great with other branded tankless water heaters. The Kelaro brand gives all flushing kit components (6ft stainless steel colour-coded hoses, 3.5-gallon bucket with EZ-Off lid, usage instructions, and flow-aide biodegradable descaler, 1/8HP utility pump) that user can easily clean the heater without hire a plumber. 

3. Whitlam KITC FLOW-KIT

Review: Since 1900, JC Whitlam has been manufacturing high quality, and effective products which work longer and energy-efficiently. The flow-aide system descaler is especially built to dissolve the toughest water scale, lime, and rust deposits from essentially any element of water-based equipment. The Whitlam Flow-Kit is powerful, and with proper safety, the descaler liquid is non-toxic, non-flammable, non-hazardous, non-corrosive and biodegradable. The 3.5-gallon bucket, 350 GPH pump, 2 rubber hoses, and 1-quart flow-aide are included.

4. DrainX Tankless Descaler

Review: The DrainX flushing kit supports maintaining and extending the lifespan of an electric/gas tankless water heater. The DrainX flushing kit comes with a 3.5-gallon bucket that has a lid and carrying handle to use and move, 1/6HP durable pump, solid, not breakable 2-steel hoses, and descaler powder which is biodegradable, more powerful than vinegar, and great works to eliminate organic, inorganic and corrosion causing buildup.

5. My PlumbingStuff Flushing Kit

Review: My PlumbingStuff flushing kit is great for maintaining and lifespan of any tankless water heater. It comes with a 5-gallon bucket, a 32-ounce bottle of flow descaler, and a Zoeller floor sucker pump, and 5-foot stainless steel hoses. All higher quality components are durable and efficiently work. The flow-aide is a non-hazardous, non-corrosive, biodegradable descaler easy to mix in water and discard lime, mud, rust and other water formed deposits.

6. Chromex Tankless Flush Kit

Review: The Chromex tankless water heater helps maintain and increase the lifespan of the tankless water heater. The Chromex cleaning solution eliminates scale deposits from the water heater, the citric acid-based and solvent-free formula is safe for use with most metals, PVC, Rubber and ABS plastic hoses and material. The Chromex 6 pieces kits have a 1/6HP pump, 2 rubber hoses, descaler solution and an elevated pump grate. 

7. Hercules Haymaker Descaler Kit

Review: The Hercules Haymaker descaler kit is great for dissolved carbonates, sulfates, phosphates, rust, oxides and others in organic mineral deposits which constrict flow to revive circulation and heat transfer efficiency. The descaler kit has one 32 oz bottle of descaling solution, 2 five ft hoses and one solid 550 GPH electric re-circulation pump with a 25 ft power cord, and one 3.5 gallon bucket for everything you need to discard scale from tankless water heater.

8. Rheem Flush Kit

Review: The Rheem flushing kit comes with a heavy-duty pump that works great and effectively, a large 5-gallon bucket also included in a kit that helps you to pour in the solution and merges in the motor. The rubber materials hoses are durable and long-lasting, easy to operate and use and lessen the limescale build-up and prevent the solution from sticking to the surface and pouring in the whole liquid inside the heater.

9. Eccotemp EZ-Flush Descaler Kit

Review: The Eccotemp brand is providing high quality and durable complete descaler kits which helps to clean water scale, lime, and rust from tankless water heaters. The EZ-flushing kit has seamless compatibility, a convenient handle, easy to move store and utilize. A solid 350-GPH pump, durable 2 five-foot rubber hoses and 1 quart of descaler available at reasonable prices. The compact flushing kit comes with a 1-year factory product guarantee.

10. Whitlam Flow-Aide Descaler Kit

Review: The Whitlam Flow-Aide descaler kit is best for quickly dissolving water scale, like, rust and other water formed restoring efficiency to most for all appliances. A submersible pump, hoses, a 3.5-gallon bucket and a quart of flow aide also included. Maintaining the heating passage free of mineral deposits relatively boosts efficiency, saves energy, expands the effective life of appliances and saves money and time. It is easy to use and operate.

Considerations For Buyers


Every tankless water heater has a brand name. One brand makes all components and different products which you need for product maintenance. If you are using a Rheem brand water heater, you should use the Rheem brand water heater cleaning kit for better results because a company better knows about their product’s material and care. Otherwise many branded tankless water heater flush kits can be used with different branded water heaters.


The heavy-duty pumps are included in cleaning kits which are easy to install and operate. All tankless water heater flush kits have different GPH (gallon per hour) performance. The utility pump has high-quality construction (thermoplastic) that is corrosion resistant and offers required years of performance and reliability.

Hoses & Motor

The main features of the heater flush kit are the motor, discharge, intake screen and adapter. The heavy-duty thermally protected – split capacitor motor with solid copper motor windings help the easy to clean intake screen filter out the debris and tiny particles reaching the impeller. Every flush kit has a different ( steel & plastic) hose. The stainless steel hose works long-lasting and the plastic hose needs more protection.

Bucket & Quality 

Every water heater flush kit has a different (3.5, 4.5) gallon bucket with a screw-top off for easy access, and a heavy-duty handle helps in moving, and tightly seals the lid for storage. All cleaning kit equipment (bucket, hoses, and pump) have higher quality (plastic, thermoplastic, steel, copper material) which are durable and work long-lasting. 

Formula (Descaler Powder)

Every tankless water heater flush kits have different (Citric acid, solvent-free and Voc-free) formula descaler powder which is non-toxic, easy to use (simple addition to a bucket and mix well with water and helps to dissolve water scale, lime, and mud, rust and other water deposits. The descaler powder formula is 3-times better on the scale than vinegar and has no foul odour.


Every tankless water heater descaler kit included installation instructions and an operating manual that anyone could easily clean their water heater without wasting money on plumber charges. Every company gives their helpline contact. If you have any questions about operating you can easily contact the service operator and solve your problem about cleaning the heater.

Kit Components

All components (pump, hoses, descaler, bucket) are also separately available in the market. If any components break (pump, hoses, bucket) you can easily buy from the company at reasonable costs. 


All flushing kit components (descaler solution, pump, bucket, hoses) are safe for your tankless water heater and descaling solution dissolved water mud, rust, lime and helps to maintain and longer life of the water heater.

Frequently Asked Questions [FAQs]

The Superior Tankless Water Heater Descaler Pump kit is the best of others, it has a 3.5-gallon pail with lid, heavy-duty utility pump,7 oz descaler powder, and stainless steel hoses at a reasonable price. Easy to set up and operate, no need to hire a plumber. The Superior flushing kit also works great with Rinnai tankless water heaters. All components of Superior cleaning kits have higher quality, work long-lasting and efficiently.

After long uses of a water heater the internal heater area needs cleaning, the water pressure decreases due to clogged with tiny particles. The water heater cleaning kit is helping in water heater maintenance and providing you with great water flow. Most people are using vinegar and other chemicals for cleaning water heaters but the tankless water heater flush kit consists of higher quality hoses, pumps and buckets that are great for properly cleaning the water heater.

Every cleaning kit brand gives instructions so that everyone can easily use it without others’ help. You do not need to hire a plumber and waste money on plumber charges. Every company gives their helpline number for user help so that buyers have any questions or problems they can freely ask for their solution. The cleaning kits have all accessories (bucket, hoses, descaler, pump) that are easy to install and operate.

Some water heater cleaning kits can be used with other brands like kelaro flushing kits great works with (Rheem, Bosch, Noritz, Rinnai, Takagi, Navien, Stiebel, Atmor, Ecosmart, Eccotemp, Marey Power, Tempra) tankless water heater. When you are searching for a flushing kit, firstly search for the same brand cleaning kit which is much better than using the opposite branded kit because the same branded product works effectively and better. 

The tankless water heater cleaning kits have a heavy-duty, energy-efficient pump that works long-lasting and low electricity consumption. For better water heater performance, you must clean the heater every year. Every cleaning flush kit includes instructions that you can easily clean the water heater yourself and also can save money that you spend on hiring a plumber for just cleaning the water heater.

Bottom Line

The BS Reviews mission is to improve the lives of people and spread knowledge about the benefits of all important products which they are using daily. Our team selected top-rated, higher quality and low-cost products that everyone can easily get and use without wasting their money on buying low-quality products. In this article, we have collected the top 10 best tankless water heater cleaning kits that can give you endless pressure hot water without changing the unit. 

Some people think when the water pressure is low and the water heater is not working well, they replace their heater with a new heater which is a waste of money. If your water heater can not work well, you can clean it with a water heater flushing kit. The water heater flushing kits have a pump, bucket, hoses, and descaler powder and using instructions details that you can easily clean with yourself. We hope, in this article, we clearly show proper information of the best tankless water heater cleaning kits with their features. Now it depends on your choice of which one to select for your water heater and according to your budget.

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