A.O. Smith Signature GT15THR-199X3 Gas Tankless Water Heater
The A.O. Smith Signature Series tankless water heater provides continuous, super-high-efficiency hot water for residential applications. Engineered with advanced scale prevention and integrated leak detection technology, this wall-mounted unit ensures long-lasting performance and reliable operation for busy households.
Suitable for both indoor and outdoor installations, this versatile model operates with natural gas or liquid propane and delivers a high flow rate capable of supporting large families. Featuring an ENERGY STAR certified design and an exceptional Uniform Energy Factor of 0.95, it significantly minimizes energy consumption while maintaining optimal water heating demands.
Key Features
| Brand | A.O. Smith |
| Model Number | GT15THR-199X3 |
| Type | Tankless |
| Fuel Type | Natural gas/Liquid propane |
| Power Source | Gas |
| Installation Type | Wall mount |
| Use Location | Indoor/Outdoor |
| Maximum Flow Rate | 39.7 L/min |
| Uniform Energy Factor | 0.95 |
| Height | 113.3 cm |
| Width | 41.9 cm |
| Depth | 40.9 cm |
| Weight | 47.2 kg |
| Water Connection Size | 3/4-in |
| Vent Type | PVC/CPVC |
| Display Type | Digital |
| Scale Prevention | Yes |
| Leak Detection | Yes |
| ENERGY STAR Certified | Yes |
| Safety Listing | CSA safety listing |
Highlights
- ENERGY STAR Certified
- Leak Detection
- 15-year limited manufacturer's warranty
Compatibility
Compatible with natural gas and liquid propane fuel sources. Approved for standard residential homes and mobile home installations using PVC/CPVC venting with 3/4-in water connections.
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Frequently asked questions
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Details
This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.
Shipping & Returns
Orders typically ship within 5–7 business days. Returns are accepted within 30 days of delivery — see our Shipping Policy and Refund & Return Policy pages for full details.