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Affordable Monthly Financing
Flexible monthly payment plans are available. Once your order is placed, our team will reach out to set everything up — quick, simple, and budget-friendly.

Honest & Upfront Pricing
Clear and transparent costs with no unexpected fees or hidden charges.
Licensed & Certified Technicians
Skilled TSSA-licensed technicians providing dependable, compliant, and professional service for all repairs and installations.
Professional Installation Included
Enjoy hassle-free setup with professional installation on every purchase.
Parts & Labour Warranty
Comprehensive protection covering both parts and labour to ensure long-term reliability and peace of mind.
Specification
| Attribute | Details |
|---|---|
| Make | A.O. Smith |
| Model | ATM-199X3 |
| Product Type | Tankless / Instant Water Heater |
| Maximum Flow Rate | 10.5 GPM |
| Heating Capacity | 199,000 BTU |
| Energy Efficiency | High Efficiency |
| Energy Star Certified | Yes |
| Installation Type | Wall Mounted |
| Dimensions | Compact Design (Space Saving) |
| Application | Residential & Commercial |
| Water Supply | Continuous Hot Water |
| Temperature Control | Advanced Digital Temperature Control |
| Safety Features | Overheat Protection, Auto Shut-Off |
| Suitable For | Multiple Bathrooms & Simultaneous Usage |
| Usage Areas | Homes, Apartments, Hotels, Clinics |
| Warranty | 5 Years Parts + 15 Years Heat Exchanger + 1 Year Labour |
Description
The A.O. Smith ATM-199X3 is a high-capacity tankless water heater designed to deliver powerful and continuous hot water for residential and commercial use. With a strong heating capacity of 199,000 BTU and a flow rate of 10.5 GPM, this unit is built to handle multiple water outlets at the same time, making it ideal for large homes and high-demand environments.
Key Features
Continuous Hot Water Supply
The tankless design heats water only when needed, ensuring an uninterrupted supply of hot water without the limitations of a storage tank.
High Flow Rate – 10.5 GPM
Easily supports simultaneous use of showers, faucets, and appliances without compromising water pressure or temperature.
Powerful Heating Capacity – 199,000 BTU
Delivers fast and efficient heating performance, suitable for larger households and commercial applications.
Energy Efficient Operation
Reduces energy consumption by heating water on demand, helping lower electricity or gas bills compared to traditional water heaters.
Compact and Space Saving Design
Wall-mounted unit designed to save space, making it perfect for modern homes, apartments, and commercial setups.
Advanced Temperature Control
Maintains consistent and accurate water temperature for a comfortable and reliable experience.
Durable Build Quality
Engineered with high-quality components for long-lasting performance and dependable operation.
Multiple Safety Features
Equipped with safety systems such as overheat protection and automatic shut-off to ensure safe usage.
Why Buy A.O. Smith ATM-199X3 Tankless Water Heater
The ATM-199X3 is a reliable and high-performance solution for users who need continuous hot water with maximum efficiency. Its powerful heating capacity, energy-saving operation, and compact design make it a strong choice for both residential and commercial installations where performance and durability are essential.









