What it delivers
The Rinnai RE199eN Natural Gas Tankless Water Heater is a non-condensing gas tankless with a 199,000 BTU/h burner and a stated maximum flow of 9.8 GPM.
Flow depends on how cold the incoming water is. Our estimate from its input: 6.8 GPM at a 45°F rise, falling to 4.4 GPM at 70°F, which is 2 showers at 2 GPM on a cold-climate winter day. Check it against your own fixtures.
Gas load at full fire: about 192 cubic feet of natural gas an hour. An older half-inch line that already feeds a furnace often can't spare that, so have a gas fitter check the pipe size and run.
Non-condensing indoor units run hot exhaust and vent in the maker's listed vent system (often stainless Category III), which costs more than plastic.
Also on the listing: features: LED Display; connectivity: WiFi; model: RE199eN; warranty: 1 Year Labor, 5 Year Parts.
The listing gives dimensions of 14.05 in (W) x 27.24 in (H) and a weight of 24.15 kg.
Warranty, per the listing: 1 Year Labor, 5 Year Parts.
Right unit for this house?
Install it when
- Houses running 2 showers at once in winter
- Replacing a gas tank heater
Look at another unit when
- More than 2 winter showers at once
- Homes without a gas line
Strengths and trade-offs
Strengths
- 199,000 BTU/h input
- Up to 9.8 GPM
Trade-offs
- Gas pipe sizing to confirm
- Stainless venting costs more
- Scale builds up without flushing
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 | RE199eN | Retailer |
|---|---|---|
| Dimensions (seller) | 14.05"W x 27.24"H | Retailer |
| Features (seller) | LED Display | Retailer |
| Max flow (maker) | 9.8 GPM | Retailer |
| Input (maker) | 199,000 BTU/h | Retailer |
| Product weight | 24.15 kg | Retailer |
| Warranty | 1 Year Labor, 5 Year Parts | Retailer |
| Fuel | Natural Gas | Retailer |
| Condensing | non-condensing | Retailer |
| Connectivity | WiFi | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
- FOGATTI FDG-CF170G-NG Natural Gas Tankless Water Heater
- VancEpic V-RH19K-NG 190,000 BTU Natural Gas Tankless Water Heater
- Ranein RH19K-NG 190,000 BTU Natural Gas Tankless Water Heater
- ThermoMate CZ750NG Natural Gas Tankless Water Heater
Full gas tankless water heaters spec grid · Every Rinnai unit in the catalog
Final verdict
A practical non-condensing gas tankless for houses running 2 showers at once in winter.
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