When it comes to quality, Noritz takes no short cuts in producing the highest quality tankless water heaters. Unlike other manufacturers, we do not outsource the main components of our heaters. We manufacture nearly 100% of the parts that go into our heaters. We even make the heat exchanger's copper tubing from raw copper. This allows Noritz to have the highest quality control of all the heater's parts and components.
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| Model ID | Model Name | Type | Input Range MBtuH | Flow Rate Range | Energy Star | Energy Factor | Temperature Range | Control | HxWxD | Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| 158 | NR111DV | Two Pipe | 11.0 - 250.0 | 0.5 - 11.1 | No | c | 100 - 180 | Optional | 24.2x18.3x9.4 | 62 |
| 161 | NR111SV | Single Pipe | 11.0 - 250.0 | 0.5 - 11.1 | No | 0.82 | 100 - 180 | Optional | 24.2x18.3x9.4 | 62 |
| 163 | N-0751M | Single Pipe | 12.0 - 199.9 | 0.5 - 9.8 | Yes | 0.83 | 100 - 180 | Optional | 23.6x13.8x9.4 | 47 |
| 164 | N-0751M-DV | Two Pipe | 12.0 - 199.9 | 0.5 - 9.8 | Yes | 0.83 | 100 - 180 | Optional | 23.6x13.8x9.4 | 47 |
| 166 | N-0631S | Single Pipe | 25.0 - 180.0 | 0.5 - 7.1 | Yes | 0.83 | 100 - 160 | Optional | 23.6x13.8x6.7 | 41 |
| 168 | N-1321M ASME | Single Pipe ASME | 22.5 - 380.0 | 0.7 - 13.2 | No | c | 100 - 180 | Optional | 29.5x18.9x11.8 | 105 |
| 2185 | N-0531S | Single Pipe | 20.0 - 140.0 | 0.5 - 6.6 | Yes | 0.82 | 100 - 160 | Optional | 20.5x13.8x6.7 | 36 |
| 2187 | N-0751M-DVC | Concentric | 12.0 - 199.9 | 0.5 - 9.8 | Yes | 0.82 | 100 - 180 | Onboard | 23.6x13.8x9.4 | 47 |
| 2188 | N-0931M-ASME | Single Pipe ASME | 11.0 - 250.0 | 0.5 - 11.1 | No | v | 100 - 180 | Optional | 24.2x18.3x9.4 | 62 |
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