Navien water heaters
23 basic models and 36 listed models.
Certified figures by basic model
| Basic model | Type | Storage volume (gal) | UEF | Flow at a 67°F rise (gal/min) | First-hour rating (gal) | Recovery efficiency | Model numbers |
|---|---|---|---|---|---|---|---|
| NHW700-120SE-NG | Gas tankless | — | 0.81 | 3.0 | — | 84% | NHW700-120SE-LP, NHW700-120SE-NG |
| NHW700-160AE-NG | Gas tankless | — | 0.81 | 4.0 | — | 84% | NHW700-160AE-LP, NHW700-160AE-NG |
| NHW700-160AI-NG | Gas tankless | — | 0.81 | 4.0 | — | 84% | NHW700-160AI-LP, NHW700-160AI-NG |
| NHW700-160SE-NG | Gas tankless | — | 0.81 | 4.0 | — | 84% | NHW700-160SE-LP, NHW700-160SE-NG |
| NHW700-160SU-NG | Gas tankless | — | 0.81 | 4.1 | — | 84% | NHW700-160SU-LP, NHW700-160SU-NG |
| NHW700-180AE-NG | Gas tankless | — | 0.81 | 4.5 | — | 84% | NHW700-180AE-LP, NHW700-180AE-NG |
| NHW700-180AI-NG | Gas tankless | — | 0.81 | 4.5 | — | 84% | NHW700-180AI-LP, NHW700-180AI-NG |
| NHW700-180SE-NG | Gas tankless | — | 0.81 | 4.7 | — | 84% | NHW700-180SE-LP, NHW700-180SE-NG |
| NHW700-180SU-NG | Gas tankless | — | 0.81 | 4.8 | — | 84% | NHW700-180SU-LP, NHW700-180SU-NG |
| NHW700-199AE-NG | Gas tankless | — | 0.81 | 5.0 | — | 84% | NHW700-199AE-LP, NHW700-199AE-NG |
| NHW700-199AI-NG | Gas tankless | — | 0.81 | 5.0 | — | 84% | NHW700-199AI-LP, NHW700-199AI-NG |
| NHW700-199SE-NG | Gas tankless | — | 0.81 | 5.1 | — | 84% | NHW700-199SE-LP, NHW700-199SE-NG |
| NHW700-199SU-NG | Gas tankless | — | 0.81 | 5.1 | — | 84% | NHW700-199SU-LP, NHW700-199SU-NG |
| NPE-150S2 | Gas tankless | — | 0.93 | 3.4 | — | 97% | NPE-150S2 |
| NPE-180A2 | Gas tankless | — | 0.95 | 4.3 | — | 98% | NPE-180A2 |
| NPE-180S2 | Gas tankless | — | 0.96 | 4.4 | — | 99% | NPE-180S2 |
| NPE-210A2 | Gas tankless | — | 0.95 | 5.0 | — | 98% | NPE-210A2 |
| NPE-210S2 | Gas tankless | — | 0.96 | 5.3 | — | 99% | NPE-210S2 |
| NPE-240A2 | Gas tankless | — | 0.95 | 5.6 | — | 98% | NPE-240A2 |
| NPE-240S2 | Gas tankless | — | 0.96 | 5.8 | — | 99% | NPE-240S2 |
| NWP500S050AUMB | Heat pump | 45 | 3.85 | — | 65 | 461% | NWP500S050AUMB |
| NWP500S065AUMB | Heat pump | 61 | 4.03 | — | 80 | 433% | NWP500S065AUMB |
| NWP500S080AUMB | Heat pump | 74 | 4.05 | — | 85 | 453% | NWP500S080AUMB |
A range means the models under one basic model differ. A dash means the model has no such figure.
Per unit of energy, its heat into water, or UEF, reaches 4.05. That UEF is over 1 because heat pumps move heat from air into water. That UEF belongs to the NWP500S080AUMB, a heat pump model. ENERGY STAR certified model numbers are missing from 14 of its 23 basic models.
Its range spans 2 kinds: gas tankless and heat pump. The gas tankless group holds 20 of its 23 basic models. Its first-hour peak, 85 gallons, comes from the NWP500S080AUMB. Part of those 85 gallons is water warmed as the tank drains. This brand's highest tankless flow belongs to the NPE-240S2. That flow is 5.8 gallons per minute for water warmed by 67°F.
This brand's 36 model numbers rank it below 24 of the 117 brands on this site. On this site, only this brand lists these basic model numbers.