Camplux CA422 102,000 BTU Propane Tankless Water Heater: 102,000 BTU/h

What it delivers

The Camplux CA422 102,000 BTU Propane Tankless Water Heater is a propane tankless with a 102,000 BTU/h burner and a stated maximum flow of 4.2 GPM.

Expect about 2.2 GPM with cold winter water (a 70°F rise) and 3.5 GPM when the inlet is milder (45°F rise); that is 1 shower at 2 GPM in January. Run your house through the planner.

At full fire it burns about 1.1 gallons of propane 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.

Its exhaust runs hot, so the vent must be the material its manual lists, usually stainless; budget for the vent kit.

Listed details: features: Anti-free Protection, Overheat Protection; connections: 1/2" npt; vent size: 3" vent; material: 102,000 BTU, 4.22 GPM, Gray; model: CA422.

The listing gives dimensions of 6.69 in (W) x 24.2 in (H) and a weight of 26.5 lb.

Right unit for this house?

Install it when

One shower at a time in cold climates
Propane homes
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

102,000 BTU/h input
Up to 4.2 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	CA422	Retailer
Dimensions (seller)	6.69"W x 24.2"H	Retailer
Features (seller)	Anti-free Protection, Overheat Protection	Retailer
Voltage	120 V	Retailer
Max flow (maker)	4.22 GPM	Retailer
Input (maker)	102,000 BTU/h	Retailer
Product weight	26.5 lb	Retailer
Material	102,000 BTU, 4.22 GPM, Gray	Retailer
Fuel	Propane	Retailer
Connections	1/2" npt	Retailer
Vent size	3" vent	Retailer

Rival units at this flow

Heatrova TGHT001 102,000 BTU Propane Tankless Water Heater102,000 BTU/h, up to 4.3 GPM.

Orbek HW100 100,000 BTU Propane Tankless Water Heater100,000 BTU/h, up to 4.3 GPM.

VEVOR JSQ30-B 100,000 BTU Propane Tankless Water Heater100,000 BTU/h.

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 well-specified propane tankless for one shower at a time in cold climates.

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Questions buyers ask

What flow does the Camplux CA422 102,000 BTU Propane Tankless Water Heater give in winter?

From its 102,000 BTU/h input we estimate about 3.5 GPM at a 45°F rise and 2.2 GPM at a 70°F rise, so 1 two-GPM shower 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 CA422 102,000 BTU Propane Tankless Water Heater need?

At full fire it uses about 98 cubic feet of natural gas an hour or 1.1 gallons of propane. 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.