SETUP & USE
FSP250C-1A KIT
Tankless Water Heater Descaling Flush Kit
Check your fit: 3/4 in GHT heater service ports required. Cleaning solution is not included.
Usually ships in 1–2 business days.
Estimated delivery: 3–5 business days after dispatch.
Shipping policyTANKLESS WATER HEATER MAINTENANCE
FSP250C-1A KITTankless water heater
flush kit.
Pump, bucket and service hoses together. Build a flushing loop around your heater’s maintenance instructions.
In stock
Free standard shipping to eligible U.S. addresses.
Usually ships in 1–2 business days.
Estimated delivery: 3–5 business days after dispatch. Shipping policy.
- PUMP
- 1/4 HP
- BUCKET
- 4 gal
- HOSES
- 2 × 6 ft
- Two 6 ft, color-striped service hoses
- Bucket, lid, opener and pump adapters
- Manual operation — stay with the job
Confirm 3/4 in GHT service connections. Use only a heater-approved solution that is compatible with the pump and hoses.
You MUST use a properly grounded GFCI outlet.Keep plugs and electrical connections dry.

FLUENTPOWER / FSP250C-1A KIT
Make tankless
maintenance clearer.
Pump, bucket and hoses.
One understandable setup.
FSP250C-1A KIT / PRODUCT VIDEOS
Watch it work.
See the setup. See it in use.
UNDERSTAND THE LOOP
See where
the solution goes.
The real kit, shown through a transparent bucket so the pump and both hose routes stay visible.
Illustrative routing, not a heater-specific valve procedure.
Pump to cold port.
Blue-striped hose carries solution from the pump outlet to the cold-water service connection.
Hot port to bucket.
Red-striped hose returns solution to the same bucket, separate from the pump outlet.
Water-side service ports only.
Never connect a hose to gas hardware.
ASSEMBLING
Two connections.
A clearer close-up.
Disconnect power before assembly. Match the supplied 3/4 in GHT hose ends to compatible water-side service ports.
01At the pump.
Fit the threaded adapter, then seat the blue-striped hose swivel and its washer.
02At the heater.
Blue to cold; red to hot. Follow your heater’s isolation and service procedure.
Reference-based assembly illustrations · Heater and service valves not included · Do not force mismatched threads
Fitting & safe-use notes
GHT is not NPT. Gasket-sealed hose swivels use their washer; do not add tape to the sealing face. Fit the supplied threaded adapter to the pump outlet. The black barb adapter is an alternative fitting, not an extra stage in this loop.
This overview does not replace the heater, pump or solution instructions. Isolate energy and water connections, cool and release pressure as your heater manufacturer requires. Follow the approved solution’s handling, temperature, circulation, rinse and disposal directions. Pump liquid temperature must not exceed 95°F. If unfamiliar with the procedure, use qualified service.
Keep electrical connections dry, use a properly grounded GFCI outlet and supervise operation. Keep the intake covered; never run dry or rely on automatic shutoff. Disconnect power before handling, complete the heater’s rinse/restoration procedure and never lift the pump by its cable.
STORE IT TOGETHER
One bucket.
Ready for next time.
Drain and dry after use, then tuck the pump, hoses, adapters and lid opener inside.
Technical specifications & performanceKit contents and separate pump reference values
Pump data. Not flushing speed.
Five pump reference points · ft / GPH
Reading guides, not extra measured values. Maximum ratings are separate limits.
The heater, valves and service hoses change the actual operating flow.
Know the setup.
- Model
- FSP250C-1A KIT
- Pump
- FSP250C-1A · 1/4 HP
- Bucket
- 4 gal · lid included
- Service hoses
- 2 × 6 ft · stainless braid
- Hose thread
- 3/4 in GHT
- Control
- Manual · supervised
- Maximum pump flow
- 1,900 GPH
- Maximum pump head
- 23 ft
- Pump supply
- 120 V / 60 Hz
- Maximum liquid temperature¹
- 95°F
- Pump power cord¹
- 16.4 ft
- Cleaning solution
- Not included
¹ Pump manual reference for liquid temperature and power-cord length. Maximum flow and head are separate limits, not guaranteed heater-loop operating points.
Before you connect.
Is cleaning solution included?
No. Choose only a solution permitted for your specific water heater and compatible with the pump and hoses. Follow its quantity, temperature, handling and disposal instructions.
Will the supplied hoses fit every heater?
No universal fit is assumed. The supplied hoses use 3/4 in GHT connections. Confirm that your installed service or isolation valves accept the supplied hose ends; valves are not included.
How long should I circulate the solution?
Use the procedure for your exact heater and cleaning solution. There is no universal 30-minute cleaning time, and circulation time is not determined by the pump’s maximum flow rating.
Does the pump switch off automatically?
This is a manually controlled pump, not an automatic pressure-sensing system. Supervise operation and disconnect power before the liquid level falls too low. Never run dry.
Can I use the printed performance values as flushing flow?
No. They are pump reference values at stated head heights, not measured flow through a heater. Service valves, the heater water path, hose length and fittings change the operating point.
COMPARE THE TWO KITS
Choose the setup.
Not just the horsepower.
FSP250C-1A KIT: 1/4 HP pump and 4-gallon bucket. FSP400C-2 KIT: 1/2 HP pump and 5.3-gallon bucket. Both include two 6-foot stainless-steel hoses and a bucket lid opener.
Check bucket space, hose routing and your heater’s service connections. More horsepower does not guarantee a faster flush; follow the heater’s specified solution and procedure.
MODEL-FIRST SUPPORT
Check the fit.
Then build the loop.
Ask about FSP250C-1A KIT and your heater’s service connections.




Pump dimensions: 8.7 H × 5.8 W × 5.7 D in. See original KIT artwork.
Pump reference values, not measured flow through your heater.