| Power Source | Gas, Propane Liquid |
|---|---|
| EC Range | A+++ - E |
| Color | Gray |
| Water Connection | 3/4 in NPT |
| Brand | A. O. Smith |
| Type | Tankless Water Heater/Boiler |
| Water Connection Location | Bottom |
| Energy Star | A |
| Heating System | Instantaneous (Tankless) |
| Voltage | 120 V |
| Model | GT15-310C-I |
| Jacket Diameter | Heater |
| BTU/h Heating Rating | 190000 |
| Mounting Location | Indoor, Wall, Whole House |
| Unit Quantity | 3 |
Check the listing for details. A.O. Smith Tankless Water Heater - INDOOR ATI-310C - 190,000 BTU - Ultra-Low NOx. Color: Gray, Condition: New. Listed at 850.95 USD. Tankless Gas water heaters only heat water when needed, making them one of the most energy efficient ways to heat water. This high efficiency non-condensing indoor model has a 0.81 Uniform Energy Factor (UEF) and can reduce your energy consumption and save money on your energy bills.