What it delivers
The Eccotemp 6.8GB-NG Natural Gas Outdoor Tankless Water Heater is an outdoor gas tankless with a 140,000 BTU/h burner and a stated maximum flow of 6.8 GPM.
Worked out from its input, it delivers roughly 4.8 GPM when the water only has to rise 45°F, and 3.1 GPM at a 70°F winter rise: 2 showers at 2 GPM in summer, 1 shower at 2 GPM in winter. Run your house through the planner.
The line must deliver about 135 cubic feet of natural gas an hour when it fires flat out. The requirement calculator adds it up; a licensed fitter confirms the pipe.
As an outdoor model it mounts on an exterior wall and needs no vent pipe; in freezing climates check the maker's freeze protection and cover the connections.
Other listed details: features: Anti-Freezing Protection; material: Alloy Steel; model: 6.8GB-NG.
The listing gives dimensions of 14.5 in (W) x 25.5 in (H), a weight of 36.4 lb and 1x digital temperature remote control, 1x gas appliance shut off valve, 1x mounting hardware, 1x product manual in the box.
Right unit for this house?
Install it when
- One shower at a time in cold climates
- Replacing a gas tank heater
Look at another unit when
- More than 1 winter shower at once
- Homes without a gas line
Strengths and trade-offs
Strengths
- 140,000 BTU/h input
- Up to 6.8 GPM
- No vent pipe
Trade-offs
- Gas pipe sizing to confirm
- Needs freeze protection outdoors
- Needs periodic descaling
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 | 6.8GB-NG | Retailer |
|---|---|---|
| Dimensions (seller) | 14.5"W x 25.5"H | Retailer |
| Features (seller) | Anti-Freezing Protection | Retailer |
| Voltage | 120 V | Retailer |
| Max flow (maker) | 6.8 GPM | Retailer |
| Input (maker) | 140,000 BTU/h | Retailer |
| Product weight | 36.4 lb | Retailer |
| Material | Alloy Steel | Retailer |
| Fuel | Natural Gas | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
Final verdict
A sensible outdoor gas tankless for one shower at a time in cold climates.
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