6699 SUB1500KIT01 Tankless Water Heater Flushing Kit, 1/4 HP Pump

For homeowners and RV owners maintaining a tankless water heater, this kit brings the main flushing components together in one setup. The 1/4 HP submersible pump, hoses, pail, adapters, washers, and lid opener are designed for this maintenance task.

Connect the hoses to the heater’s isolation valves and use the pump to circulate a cleaning solution through the system. The supplied components give you a practical alternative to sourcing a pump, hoses, and bucket separately.

A 10-foot power cord and two 6-foot hoses provide the connections for setting up the flush. The pump is rated for 1500 GPH, and its listed power requirement is 115V/60Hz.

Pros

The kit includes the core parts for flushing a tankless water heater: a 1/4 HP submersible pump with two adapters, two 6-foot PVC hoses with washers, a 3-gallon bucket, and a bucket lid opener. Having these pieces together makes it easier to organize a maintenance task without assembling a separate parts list. The hoses are intended to connect to tankless isolation valves, while the pump circulates the cleaning mixture.

The lid opener has a long handle, finger grooves, and a hook-shaped opening for leverage when opening a bucket lid. Buyers often appreciate the kit’s usefulness and the convenience of having its main components together. Reports about flow are mixed, and some buyers also raise durability concerns, so their experiences are not uniform.

Highlights

The pump’s 1/4 HP motor and stated 1500 GPH maximum flow rate are suited to circulating a flush solution as part of water-heater maintenance. Its 10-foot power cord and the two 6-foot hoses help position the pump and make the connections needed for the job. The pump is submersible, and the package includes two adapters for connecting the setup.

Compared with buying each part separately, this kit centers the purchase on a coordinated flushing setup, including the bucket and lid opener as well as the pump and hoses. That is useful when the goal is to prepare for a tankless-heater flush rather than build a general-purpose pump arrangement. The listed application is flushing a tankless water heater, use it with the heater’s isolation valves.

Cleaning & care

The stated flushing mixture is 1 gallon of vinegar or biodegradable cleaner combined with 1 gallon of water. The cleaning liquid is not included, so choose and prepare the solution separately before beginning. Follow the water heater manufacturer’s instructions for servicing and use of its isolation valves, and keep the pump within its stated electrical requirement of 115V/60Hz.

Buyers’ comments also describe the kit as straightforward to use, while accounts of flow vary. Some report good flow, others describe a slowdown during use. There are also reports of bucket cracking and rust-related issues. These are individual buyer experiences, not a substitute for the product’s listed specifications.

Before you decide

What comes with the kit? It includes a 1/4 HP sump pump with two adapters, two 6-foot PVC hoses with washers, a 3-gallon bucket, and a bucket lid opener.

What solution is used for flushing? The listed method uses 1 gallon of vinegar or biodegradable cleaner mixed with 1 gallon of water. The cleaning solution is separate from the kit.

What power does the pump use? The pump is listed for 115V/60Hz and has a 10-foot power cord. Confirm the power source available for your setup matches those requirements.

When it makes sense

Choose the 6699 SUB1500KIT01 when you want a dedicated set of flushing components for tankless water-heater maintenance, with the pump, hoses, bucket, adapters, and opener in one kit. Its listed 1/4 HP pump and hose connections support the circulation step, while the 3-gallon pail provides a container for the prepared solution. It’s a practical fit for planned maintenance when you can connect to the heater’s isolation valves and prepare the cleaning mixture separately.