













💧 Keep your hot water flowing flawlessly—because your comfort deserves the best!
The 6699 Tankless Water Heater Descaling Flush Kit is a professional-grade maintenance solution featuring a 1/6 HP submersible pump with 1100 GPH flow, two 6-foot PVC hoses with adapters, a 3-gallon bucket with ergonomic lid opener, and easy installation. Designed to extend the life and efficiency of tankless water heaters, this kit offers quiet operation, durable components, and a user-friendly setup for hassle-free descaling.











| ASIN | B09R7H7V53 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #134,751 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #50 in Utility Pumps |
| Brand | 6699 |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (285) |
| Date First Available | January 26, 2022 |
| Included Components | 2 PVC Hoses, 3 Gallons White Pail, Bucket Lid Opener, Submersible utility pump |
| Item Package Quantity | 1 |
| Item Weight | 9.88 pounds |
| Item model number | SUB1100KIT01 |
| Manufacturer | Volcanorbuy |
| Material | Plastic |
| Mounting Type | Ceiling Mount |
| Part Number | SUB1100KIT01 |
| Power Source | Corded Electric |
| Product Dimensions | 9.8"L x 9.8"W x 10.8"H |
| Specific Uses For Product | Tankless Heater Flush |
| Style | 1100GPH Portable Pump |
| Voltage | 115 Volts |
| Warranty Description | Seller and manufacturer combined one year warranty after date of purchase |
P**S
easy to use
worked good good quality
A**R
Works well, good price.
Worked very well for the price, bought to flush out tankless water heater and performed as expected. May need to buy a bigger bucket depending on your situation. Build quality was fine. Water flow was more than adequate.
R**.
Very easy to use
Works perfectly.
J**.
Good value
Works Well - The kit is good - hoses are long enough and are good quality. Used to flush multiple Navien heaters. The pump can take a bit to prime and but once it gets going - moves enough volume of solution to properly flush the heater.
M**K
Easier than I thought and needs a bigger bucket
This descaling kit, which included two hoses and a pump, made this incredibly easy. The overall process of hooking up the hoses was very straightforward and intuitive.The kit comes with a pump and a 3-gallon tub, which is a little on the small side. You really need a 5-gallon bucket. However, once I had the right-sized bucket, the setup was a breeze.First, I hooked up the hoses as instructed, making sure to turn off the gas and the cold and hot water lines to the heater. I poured about 4 gallons of vinegar into my 5-gallon bucket and placed the pump inside. One hose went from the pump to the cold water inlet, and the other hose from the hot water outlet went back into the bucket, creating a perfect loop.Once everything was hooked up, I turned the pump on and let it run for about an hour. The water in the bucket turns a little blue as the scaling is removed. After an hour, I unplugged the pump and dumped out the blue water.The rinsing process was just as easy. I put fresh water in the bucket, placed the pump back in, and ran it for a few minutes to flush the system. I repeated this fresh water rinse two more times to ensure everything was clean.Finally, I unhooked the hoses, turned the water supply back on, and turned the gas back on by hitting the “on”button and holding it for a moment reset the heater, and I could hear it kick on again. The entire process took about two hours, and the results were noticeable.Overall, despite the slightly undersized tub, this kit made descaling my tankless water heater a simple task. It was very easy to use and a great investment.
A**N
Great tankless kit
This kit worked amazing.
D**G
Poor quality
Used once and went to use it a second time a few months later and the pump is broken. Poor quality
J**I
Great Addition for Home Maintenance
This was worth the purchase! Made home maintenance of our tankless water easy! Everything just stores in the bucket for next use!
K**Y
This descaling kit really made emptying and cleaning the waterless tank so much easier. Definitely worth purchasing to make your chore more efficient.
L**N
Excellent! Works as described. Very quiet and instructions are clear and straight forward.
E**.
This kit Requires an additional 2 fittings for the supplied hoses to step down from 3/4 to 1/2 inch. The outlets on Girard are 1/2 male. (So the needed adapters are 2 x 3/4 inch female to 1/2 inch male and 2 x 1/2 inch female to female couplers joined together as seen in the photo. ). The Pump works well and is very efficient. A 20 lite pale is recommended and 1-4 Litre of regular Vinegar as well as 2.5 Litres of Cleaning Vinegar mixed together Ran for a hour of more depending how thorough you would like to be. I ran mine for 1.5 hours.
Trustpilot
3 days ago
3 weeks ago