What it delivers
The Camplux WA686M-NG 199,000 BTU Natural Gas Outdoor Tankless Water Heater is an outdoor gas tankless with a 199,000 BTU/h burner and a stated maximum flow of 8.4 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. Size it to your fixtures and climate.
At full fire it burns about 192 cubic feet of natural gas an hour. The gas line has to carry that on top of the furnace, range and dryer; a gas fitter sizes the pipe from its length and the total load.
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.
Also on the listing: model: WA686M-NG.
The listing gives a weight of 39 lb.
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 8.4 GPM
- No vent pipe
Trade-offs
- Gas line may need upsizing
- 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 | WA686M-NG | Retailer |
|---|---|---|
| Product weight | 39 lb | Retailer |
| Input (maker) | 199,000 BTU/h | Retailer |
| Max flow (maker) | 8.4 | Retailer |
| Fuel | Natural Gas | Retailer |
| Venting | outdoor installation | Retailer |
Rival units at this flow
More gas tankless water heaters rated for similar demand
- Westinghouse AMZ-HS120A1G-LP 120,000 BTU Propane Outdoor Tankless Water Heater
- Westinghouse AMZ-HS120A1G-NG 120,000 BTU Natural Gas Outdoor Tankless Water Heater
- APUS AP-AWH-W26LPG 190,000 BTU Propane Outdoor Tankless Water Heater
- APUS AP-AWH-W26NG 190,000 BTU Natural Gas Outdoor Tankless Water Heater
Full gas tankless water heaters spec grid · Every Camplux unit in the catalog
Final verdict
A practical outdoor gas tankless for houses running 2 showers at once in winter.
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