Descaling and Maintenance Kits · 18 qualify

Tankless Water Heater Flush Kits

Flush kits, ordered by stated pump flow, highest first; kits without a stated flow follow.

Listed when
A flush kit for descaling a tankless water heater.
Sorted by
Pump flow (highest first)
In the list
The top 8 of 18 products in our catalog that meet the rule.
#1 · Pump flow: 2500

G green EXPERT 203650 Tankless Flush Kit

Descaling kit; fits most tankless brands that have service ports/valves (including many Rinnai, Navien; pump 2500.

#2 · Pump flow: 2000

G green EXPERT 203649 Tankless Flush Kit

Descaling kit; fits most brands that have service valves; pump 2000.

#3 · Pump flow: 1800

G green EXPERT 203648 Tankless Flush Kit

Descaling kit; fits most tankless brands that have service ports/valves (including many Rinnai, Navien; pump 1800.

#5 · Pump flow: 1400

G green EXPERT 203641 Tankless Flush Kit

Descaling kit; fits most tankless water heaters that have isolation/service valve ports; pump 1400.

#6 · Pump flow: 1400

G green EXPERT 203651 Tankless Flush Kit

Descaling kit; pump 1400.

#7 · Pump flow: 1100

Goyappin S313107 Tankless Flush Kit

Descaling kit; pump 1100.

#8 · Pump flow: Not stated by the maker

Chromex CXTE-1694 Tankless Flush Kit

Descaling kit; fits most all tankless water heaters such as Rinnai, Bosch, Noritz, Rheem, Takagi, Tempra.

How to choose between them

Rinnai's flushing guide calls for 4 gallons of undiluted white vinegar circulated through the heater, up to about 45 minutes, at least once a year; its SENSEI bulletin specifies at least an hour at 3 to 4 GPM.

Check the hose connections against your heater's service valves before ordering.

Rankings follow the rule and order stated above, using makers' published specifications and listed prices. How we research · Disclosure