| Water Heaters |
| Features | A. O. Smith Chimney Vent |
A. O. Smith Power Vent |
A. O. Smith Electric |
Rannai Tankless Water Heater |
|
| Type | Gas | Gas | Electric | Gas | |
| Energy Efficiency | Standard efficiency | Standard Efficiency | Standard Efficiency | Depends On Model | |
| Tank Capacity | 40 gal. | 40 gal. | 52 gal. | Depends On Model | |
| Vent - Type | Chimney Vent | Power Vent | None | Depends On Model | |
| Factory Warranty Tank |
6 Years Limited | 6 Years Limited | 6 Years Limited | 12 Years On Heat Exchanger |
|
| Factory Warranty Parts |
2 Years Limited | 2 Years Limited | 2 Years Limited | 5 Years Parts 1 Year Labor |
|