What it delivers
The G green EXPERT 203650 Tankless Flush Kit is a flush kit for descaling a tankless heat exchanger; its listing says it fits most tankless brands that have service ports/valves (including many Rinnai, Navien.
The pump circulates vinegar or a descaling solution through the heater from a bucket for about an hour, connected to the service valves on the hot and cold lines.
Pump flow, per the listing: 2500.
How often: Rinnai says at least once a year, more on hard water. How long: up to about 45 minutes in its consumer guide, at least an hour at 3 to 4 GPM for its SENSEI models.
Other listed details: material: Plastic; model: 203650; pump flow: 2500; solution: white vinegar.
The listing gives dimensions of 10 in (L) x 10 in (W) x 11.5 in (H), a weight of 11 lb and 1/2hp pump, 3-gal bucket with opener, adapter kit, pvc hoses in the box.
Right unit for this house?
Install it when
- Yearly or hard-water flushing
- Owners who flush their own heater
Look at another unit when
- Heaters whose manual calls for a different method
Strengths and trade-offs
Strengths
- Descaling kit
- Names most tankless brands that have service p
- 2500
Trade-offs
- Check the connection size first
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | 203650 | Retailer |
|---|---|---|
| Material | Plastic | Retailer |
| Dimensions (seller) | 10"L x 10"W x 11.5"H | Retailer |
| Product weight | 11 lb | Retailer |
| Voltage | 115 V | Retailer |
| Compatible devices | tankless water heaters | Retailer |
| Pump flow | 2500 | Retailer |
| Solution | white vinegar | Retailer |
| Fits | most tankless brands that have service ports/valves (including many Rinnai, Navien | Retailer |
Rival units at this flow
More descaling and maintenance kits rated for similar demand
- Goyappin S313107 Tankless Flush Kit
- G green EXPERT 203648 Tankless Flush Kit
- FLUENTPOWER FSP400C-2 KIT Tankless Flush Kit
- G green EXPERT Flush Pump Kit 203652 Tankless Flush Kit
Full descaling and maintenance kits spec grid · Every G green EXPERT unit in the catalog
Final verdict
A sensible descaling kit for yearly or hard-water flushing.
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