What it delivers
The Camplux CA422-NG 102,000 BTU Natural Gas Tankless Water Heater is a non-condensing gas tankless with a 102,000 BTU/h burner and a stated maximum flow of 4.2 GPM.
At a 45°F rise (mild inlet water to a 120°F set point) it holds about 3.5 GPM, 1 shower at 2 GPM; in winter, at a 70°F rise, about 2.2 GPM, 1 shower at 2 GPM. Size it to your fixtures and climate.
At full fire it burns about 98 cubic feet of natural gas an hour or 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.
Non-condensing indoor units run hot exhaust and vent in the maker's listed vent system (often stainless Category III), which costs more than plastic.
From the listing: connections: 1/2" npt; material: 102,000 BTU, 4.22 GPM, Gray; model: CA422-NG.
The listing gives dimensions of 14.25 in (W) x 24.21 in (H), a weight of 26.5 lb and safety glasses 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
- 102,000 BTU/h input
- Up to 4.2 GPM
Trade-offs
- Needs a gas line sized for the load
- 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-NG | Retailer |
|---|---|---|
| Dimensions (seller) | 14.25"W x 24.21"H | Retailer |
| Features (seller) | Anti-Freezing Protection, Enengy Efficient, Indoor Installation, On-Demand Hot Water, Overheat Protection Anti-Freezing Protection, Enengy Efficient, Indoor Installation, On-Demand Hot Water, Overheat Protection | Retailer |
| Voltage | 120 V AC | 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 |
Rival units at this flow
More gas tankless water heaters rated for similar demand
- Camplux CA422GNG 113,000 BTU Natural Gas Tankless Water Heater
- Ranein RH10K 100,000 BTU Natural Gas Tankless Water Heater
- ThermoMate CZ422NG Natural Gas Tankless Water Heater
- GASLAND CE528NG 150,000 BTU Natural Gas Tankless Water Heater
Full gas tankless water heaters spec grid · Every Camplux unit in the catalog
Final verdict
A solid non-condensing gas tankless for one shower at a time in cold climates.
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