What it delivers
The Rheem RTG-95XLN-3 199,900 BTU Natural Gas Outdoor Tankless Water Heater is an outdoor gas tankless with a 199,900 BTU/h burner and a stated maximum flow of 9.5 GPM.
Worked out from its input, it delivers roughly 6.8 GPM when the water only has to rise 45°F, and 4.4 GPM at a 70°F winter rise: 3 showers at 2 GPM in summer, 2 showers at 2 GPM in winter. Run your house through the planner.
The line must deliver about 193 cubic feet of natural gas an hour when it fires flat out. The requirement calculator adds it up; a licensed fitter confirms the pipe.
Outdoor units vent straight out of the cabinet, which saves the vent run and the wall penetration; plan for freeze protection and a pipe cover where winters bite.
The listing describes its venting as: Outdoor installation.
Other listed details: material: Stainless Steel; model: RTG-95XLN-3.
The listing gives dimensions of 13.5 in (W) x 20.75 in (H), a weight of 39.3 lb and display in the box.
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
- 199,900 BTU/h input
- Up to 9.5 GPM
- No vent pipe
Trade-offs
- Needs a gas line sized for the load
- Needs freeze protection outdoors
- Annual flushing on hard water
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 | RTG-95XLN-3 | Retailer |
|---|---|---|
| Dimensions (seller) | 13.5"W x 20.75"H | Retailer |
| Features (seller) | High efficiency, hot-start programming, and 1/2 gas line compatibility | Retailer |
| Max flow (maker) | 9.5 GPM | Retailer |
| Input (maker) | 199,900 BTU/h | Retailer |
| Product weight | 39.3 lb | Retailer |
| Material | Stainless Steel | Retailer |
| Fuel | Natural Gas | Retailer |
| Venting | Outdoor installation | Retailer |
| Condensing | Non-Condensing | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
- Rheem RTGH-95DVLP-3 199,900 BTU Propane Tankless Water Heater
- Rinnai RE140eP Propane Tankless Water Heater
- Rinnai RE140iP Propane Tankless Water Heater
- Rinnai RE160iP Propane Tankless Water Heater
Full gas tankless water heaters spec grid · Every Rheem unit in the catalog
Final verdict
A sensible outdoor gas tankless for houses running 2 showers at once in winter.
Buy this unit
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure