Commercial water heatersENERGY STAR certified
Lochinvar IWH0500N
500 kBtu/h gas tankless water heater.
Input rate
500 kBtu/h
Storage
6 gal
Thermal efficiency
0.96
Fuel
Gas
Of 207 certified gas tankless commercial water heaters, 173 have a higher thermal efficiency than the IWH0500N (0.96).
- Maker
- Lochinvar
- Model
- IWH0500N
- Type
- Gas Tankless
- Fuel
- Gas
- Storage
- 6 gal
- Thermal efficiency
- 0.96
- Input rate
- 500 kBtu/h
- Vent
- Direct Vent
- On the market since
- Feb 2026
- ENERGY STAR certified
- 7 May 2026
Source: ENERGY STAR certified commercial water heaters dataset, US EPA, record 4610756, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the IWH0500N
Certified commercial water heaters from other makers, same color class, within 20% of its speed.
| Model | Type | Fuel | Storage | Input rate |
|---|---|---|---|---|
| Trinity LX500WH | Gas Tankless | Gas, Propane | 3 gal | 500 kBtu/h |
| HTP ELX-500FVWH | Gas Tankless | Gas, Propane | 4 gal | 500 kBtu/h |
| A. O. Smith PWH0500NP* | Gas Tankless | Gas, Propane | 5 gal | 500 kBtu/h |
| Laars NT2V0500 | Gas Tankless | Gas | 4 gal | 500 kBtu/h |
| Bradford White BNT2V0500 | Gas Tankless | Gas | 4 gal | 500 kBtu/h |
| THERMAL SOLUTIONS AMPW500 | Gas Tankless | Gas, Propane | 5 gal | 500 kBtu/h |
Lochinvar
More Lochinvar commercial water heaters
| Model | Type | Fuel | Storage | Input rate |
|---|---|---|---|---|
| AWH1250(N,L) | Gas Tankless | Gas, Propane | 12 gal | 1,250 kBtu/h |
| AWH1500(N,L) | Gas Tankless | Gas, Propane | 14 gal | 1,500 kBtu/h |
| AWH2000(N,L) | Gas Tankless | Gas, Propane | 18 gal | 1,999 kBtu/h |
| AWH3000(N,L) | Gas Tankless | Gas, Propane | 29 gal | 3,000 kBtu/h |
| AWH4000(N,L) | Gas Tankless | Gas, Propane | 46 gal | 4,000 kBtu/h |
| CHPA120PD 100 | Electric Heat Pump | Electric | 119 gal | - |
| SWA500L | Gas Storage-type Instantaneous | Propane | 110 gal | 499 kBtu/h |
| SWR400L | Gas Storage | Propane | 110 gal | 399 kBtu/h |