Camplux WA528M-NG 150,000 BTU Natural Gas Outdoor Tankless Water Heate

What it delivers

The Camplux WA528M-NG 150,000 BTU Natural Gas Outdoor Tankless Water Heater is an outdoor gas tankless with a 150,000 BTU/h burner and a stated maximum flow of 6.4 GPM.

Flow depends on how cold the incoming water is. Our estimate from its input: 5.1 GPM at a 45°F rise, falling to 3.3 GPM at 70°F, which is 1 shower at 2 GPM on a cold-climate winter day. Size it to your fixtures and climate.

The line must deliver about 145 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.

The listing describes its venting as: Outdoor Installation.

Also on the listing: connections: 3/4" npt; material: Aluminum; model: WA528M-NG.

The listing gives dimensions of 5.91 in (W) x 23.43 in (H) and a weight of 31.3 lb.

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

150,000 BTU/h input
Up to 6.4 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	WA528M-NG	Retailer
Dimensions (seller)	5.91"W x 23.43"H	Retailer
Voltage	120 V AC	Retailer
Max flow (maker)	6.4 GPM	Retailer
Input (maker)	150,000 btu_per_hour_per_foot_per_fahrenheit	Retailer
Product weight	31.3 lb	Retailer
Material	Aluminum	Retailer
Fuel	natural gas	Retailer
Venting	Outdoor Installation	Retailer
Connections	3/4" npt	Retailer

Rival units at this flow

Camplux WA528 150,000 BTU Natural Gas Outdoor Tankless Water Heater150,000 BTU/h, up to 5.3 GPM.

Camplux WA528M-LP 150,000 BTU Propane Outdoor Tankless Water Heater150,000 BTU/h, up to 6.4 GPM.

Eccotemp 6.8GB-NG Natural Gas Outdoor Tankless Water Heater140,000 BTU/h, up to 6.8 GPM.

More gas tankless water heaters rated for similar demand

Full gas tankless water heaters spec grid · Every Camplux unit in the catalog

Final verdict

A practical outdoor gas tankless for one shower at a time in cold climates.

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Questions buyers ask

What flow does the Camplux WA528M-NG 150,000 BTU Natural Gas Outdoor Tankless Water Heater give in winter?

From its 150,000 BTU/h input we estimate about 5.1 GPM at a 45°F rise and 3.3 GPM at a 70°F rise, so 2 two-GPM showers with mild inlet water and 1 in a cold winter. The maker's flow chart for this model is the final word.

What size gas line does the Camplux WA528M-NG 150,000 BTU Natural Gas Outdoor Tankless Water Heater need?

At full fire it uses about 145 cubic feet of natural gas an hour. The pipe size depends on the length of the run and every other gas appliance on it; the maker's manual and a licensed gas fitter decide it.