Commercial water heatersENERGY STAR certified
Intellihot iQ1001 Gen II
1,001 kBtu/h gas tankless water heater.
Input rate
1,001 kBtu/h
Storage
4 gal
Thermal efficiency
0.96
Fuel
Gas, Propane
Of 207 certified gas tankless commercial water heaters, 173 have a higher thermal efficiency than the iQ1001 Gen II (0.96).
- Maker
- Intellihot
- Model
- iQ1001 Gen II
- Type
- Gas Tankless
- Fuel
- Gas, Propane
- Storage
- 4 gal
- Thermal efficiency
- 0.96
- Input rate
- 1,001 kBtu/h
- Vent
- Direct Vent
- On the market since
- Aug 2013
- ENERGY STAR certified
- 22 May 2026
Certified under the same record
The maker lists these as the same machine or a variant of it: iQ1001, (Max BTU rating is 1001, 000 BTU/Hr), iQ1501, (Max BTU rating is 1501, iQ751, (Max BTU rating is 751.
Source: ENERGY STAR certified commercial water heaters dataset, US EPA, record 2333069, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the iQ1001 Gen II
Certified commercial water heaters from other makers, same color class, within 20% of its speed.
| Model | Type | Fuel | Storage | Input rate |
|---|---|---|---|---|
| HTP ELX-1000FVWH | Gas Tankless | Gas, Propane | 8 gal | 1,000 kBtu/h |
| Lochinvar IWH1000L | Gas Tankless | Propane | 9 gal | 1,000 kBtu/h |
| Lochinvar IWH1000N | Gas Tankless | Gas | 9 gal | 1,000 kBtu/h |
| Lochinvar AWH1000L SERIES 1** | Gas Tankless | Propane | 9 gal | 999 kBtu/h |
| Lochinvar AWH1000N SERIES 1** | Gas Tankless | Gas | 9 gal | 999 kBtu/h |
| A. O. Smith PWH1000NP* | Gas Tankless | Gas, Propane | 9 gal | 999 kBtu/h |
Intellihot
More Intellihot commercial water heaters
| Model | Type | Fuel | Storage | Input rate |
|---|---|---|---|---|
| iQ751 Gen II | Gas Tankless | Gas, Propane | 3 gal | 751 kBtu/h |
| iQ251 | Gas Tankless | Gas, Propane | 1 gal | 250 kBtu/h |
| iN501 | Gas Tankless | Gas, Propane | 2 gal | - |
| iQ1501 | Gas Tankless | Gas, Propane | 6 gal | 1,501 kBtu/h |
| iQ3001 | Gas Tankless | Gas, Propane | 12 gal | 3,001 kBtu/h |
| I250 | Gas Tankless | Gas, Propane | 0 gal | 250 kBtu/h |
| iQ2001 | Gas Tankless | Gas, Propane | 8 gal | 2,000 kBtu/h |
| Electron iE1 | Electric Heat Pump | Electric | 6 gal | - |