Search  for anything...

Tankless Water Heater Flushing Kit Includes 1/4HP Submersible Sump Pump with Two Adapters & 3 Gallons Pail with Bucket Lid Opener & Two 1/2” Dia X 6’ PVC Hoses with Washers

  • Based on 538 reviews
Condition: New
Checking for the best price...
$76.48 Why this price?
Save $13.51 was $89.99

Buy Now, Pay Later


As low as $12.75 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: 20 left in stock
Fulfilled by Amazon

Arrives Monday, Aug 10
Order within 2 hours and 7 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Horsepower: 0.25 Horsepower


Features

  • Tankless Heater Clean KitThis 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 Pump1/4HP energy-efficient motor with thermal overload protection, has the ability to deliver water to maximum height 23 feet and flow rate is 1500GPH, quietly running. Portable small pump with 10 feet power cable for easy use.
  • Easy to UseThis kit includes 3 gallons bucket with a bucket lid opener, 1/4HP 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 OpenerAdopts 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.
  • SpecificationModel: SUB1500KIT01; Pump Volts/Hertz: 115V/60Hz; Pump Power: 1/4 HP; Pump motor full load: 1.5 Amps; Pump Max Head: 16.5 FT; Pump Max Flow: 1500 GPH; Pump Max Submersion Depth: 23 FT; Pump Max Fluid Temperature: 95 F; Pump Size: 6.3 x 6.3 x 8.7 inches; Bucket Size: 9.8 x 9.8 x 11.4 inches

Brand: 6699


Color: Yellow and White


Material: Plastic


Style: 1/4HP, 1500GPH Plastic Pump


Product Dimensions: 9.8"L x 9.8"W x 114"H


Power Source: Corded Electric


Item Weight: 9.2 Pounds


Maximum Flow Rate: 25 Gallons Per Minute


Maximum Lifting Height: 23 Feet


Voltage: 115 Volts


Power Source: Corded Electric


Flow Rate: 25 Gallons Per Minute


Maximum Lifting Height: 23 Feet


Voltage: 115 Volts


Horsepower: 0.25 Horsepower


Color: Yellow and White


Product Style: 1/4HP, 1500GPH Plastic Pump


Item Dimensions L x W x H: 9.8"L x 9.8"W x 114"H


Item Weight: 9.2 Pounds


Material Type: Plastic


Brand Name: 6699


Model Number: SUB1500KIT01


Manufacturer: Volcanorbuy


Manufacturer Warranty Description: Seller and manufacturer combined one year warranty after date of purchase


Specific Uses For Product: For flushing tankless water heater


Manufacturer Part Number: SUB 1500 KIT01


Item Type Name: SUB 1500 KIT01


Unit Count: 1.0 Count


Included Components: 2pcs PVC Hoses, 3 Gallons Bucket, Bucket Lid Opener, Sump pump with two adapters


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 10

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great kit, excellent value, and works exactly as needed
Horsepower: 0.25 Horsepower
I used this tankless water heater flushing kit for the first time today, and overall I’m very impressed. It did take a little longer than expected for the pump to fully prime, but once it kicked in, it worked flawlessly. The pump itself is very light, which is nice for handling, but because of that I found it helpful to add a bit of weight to keep it fully submerged—otherwise it tends to float or lean to the side. That said, for the price, this kit does an excellent job. The pump moves plenty of flow once it’s going, the hoses fit well with no leaks, and the whole setup is extremely easy to use. The directions are simple to follow, and I will be using this regularly as part of routine maintenance. Highly recommended for anyone with a tankless system looking for an affordable and effective flushing kit. ... show more
Reviewed in the United States on November 16, 2025 by Kentucky

  • Easy to use with regular household bulk vinegar
Horsepower: 0.25 Horsepower
This worked great for our Rennai tankless water heater. This pump and hose kit is a little cheaper than others because it does not include the overpriced cleaning chemicals, instead using regular household bulk vinegar. Made a noticeable difference to the flow of our hot water after neglecting flushing for far too long. Going forward we’ll do an annual flush with this easy to use kit. ... show more
Reviewed in the United States on May 27, 2026 by four.wheel.travel

  • Great Kit to Get the Flush Job Done
Horsepower: 0.25 Horsepower
I was dreading flushing my water heaters because I thought I'd have to find all the separate parts (hoses, pump, etc.), but then I found this kit. It has everything I needed to do the flush job except the cleaning solution (vinegar, which is easily found at the grocery store). I did the flush on my two heaters last Saturday and it was very straightforward. The hoses hooked up with the correct fittings and the pump worked like a charm. ... show more
Reviewed in the United States on May 25, 2026 by Amazon Customer

  • Good value for money
Horsepower: 0.25 Horsepower
Used on my Navien on demand hot water heaters. Worked well and was less expensive than other options. Stores easily in the bucket provided.
Reviewed in the United States on June 3, 2026 by Melinda

  • Glad I bought this and self-service my tankless water heater!
Horsepower: 0.25 Horsepower
Pretty solid and did the job of cleaning my one year old tankless. The reason I am giving it a 4, not 5 star rating is that when I turned it on to pump cleaning agent through my the water heater, it did not start pumping until I shook it a little, which I guess was needed to prime the pump. This aside, it is a good and far cheaper solution versus having a plumber do it. ... show more
Reviewed in the United States on February 20, 2026 by Jeff C

  • Works well
Horsepower: 0.25 Horsepower
Easy to set up and use. Turn it on and let it work, come back in an hour disconnect and done .
Reviewed in the United States on May 24, 2026 by ed christensen

  • DIY -Tankless Water Heater Servicing
Horsepower: 0.25 Horsepower
Excellent product , a perfect kit for a DIY person servicing there Tankless Water Heater. Except for the solution, the kit contains all the items necessary to flush a TWH. The directions were simple to understand and the procedure was seamless. Best of all, when your done, all the items (pump, hoses, fittings) go back into the bucket for storage. Highly recommend this product ... show more
Reviewed in the United States on March 2, 2026 by Phil A

  • Great for back flushing shower valve
Horsepower: 0.25 Horsepower
This setup worked great to back flush my shower valve after it slowed to a trickle with calcium buildup. Just a couple tips. Grab a 1/2" to 3/4" adapter (search "Reducer Hex Bushing, 3/4" Male NPT to 1/2" Female NPT"). Also, you'll need a gallon or two to run through it.
Reviewed in the United States on May 7, 2026 by Arthur Hurley

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...