A. O. SMITH AT-KJR3U-OS-N Tankless Water Heater Gas 140 000-BTU

( Brand: A. O. Smith ), ( Manufacturer Part Number: AT-KJR3U-OS-N ), ( Type: Tankless Water Heater/boiler ), ( Power Source: Ng, Propane Gas ), ( Heating System: Instantaneous ), ( Btu/h Heating Rating: 140, 000 Btu ), ( Mounting Location: Outdoor ), ( Country Of Origin: Japan )

Review A. O. SMITH Ao Tankless Water Heater Gas Outdoor 140 Btu Pickup Only

Introducing the Smith AT-KJR3U-OS-N Natural Gas Tankless Water Heater, a high-performance and energy-efficient solution for your home's hot water needs. This model is designed for residential use and can provide an endless supply of hot water, making it an excellent alternative to traditional tank-style water heaters.

The Smith AT-KJR3U-OS-N Water Heater is powered by natural gas, delivering a high input rating of 140,000 BTUs. With this impressive power output, it can easily meet the hot water demands of larger households or multiple bathrooms. The unit's advanced condensing technology ensures maximum energy efficiency, with an estimated energy factor of 0.82.

This tankless water heater features a stainless steel heat exchanger, which is both durable and resistant to corrosion. The digital control panel allows for precise temperature adjustment, ensuring consistent water temperatures and energy savings. Additionally, the unit comes equipped with advanced safety features such as a flame sensor, overheat protection, and a built-in freeze protection system.

The compact and wall-mounted design of the Smith AT-KJR3U-OS-N Water Heater makes it easy to install and space-saving. It measures only 17.2 inches by 13.8 inches by 4 inches, making it a great choice for homes with limited space. The unit also includes a built-in recirculation system, which helps reduce water waste and provides nearly instant hot water delivery.

The Smith AT-KJR3U-OS-N Tankless Water Heater comes with a comprehensive 12-year warranty on the heat exchanger, a 5-year warranty on parts, and a 1-year warranty on labor. With professional installation, this unit can save you up to 30% on your water heating bills and provide you with a reliable and constant supply of hot water for years to come.

In summary, the Smith AT-KJR3U-OS-N Natural Gas Tankless Water Heater is a powerful, efficient, and durable solution for your home's hot water needs. With its advanced features, compact design, and excellent warranty coverage, it is an investment that will provide you with years of savings and comfort.

Pros and Cons of buying a Smith AT-KJR3U-OS-N Tankless Water Heater Gas Model 140

The Smith AT-KJR3U-OS-N Tankless Water Heater Gas Model 140 is a popular choice for those seeking energy efficiency and continuous hot water supply. In this analysis, we will discuss the key advantages and disadvantages of investing in this appliance.

1. Energy Efficiency: Tankless water heaters, including the Smith model, provide hot water on demand and do not store water. This results in less energy wasted, as water is not kept hot 24/7.

2. Endless Hot Water: With tankless water heaters, there is no limit to the amount of hot water you can use at one time since they produce it on demand.

3. Compact Size: The tankless design allows for a more compact unit, saving valuable space in homes and businesses.

4. Long Lifespan: Tankless water heaters typically last longer than traditional tank-style water heaters due to their lack of a storage tank and continuous flow design.

5. Savings on Energy Bills: The energy efficiency and reduced energy consumption of tankless water heaters can lead to significant savings on monthly energy bills.

1. Higher Upfront Cost: Tankless water heaters generally have a higher initial investment cost compared to traditional tank-style water heaters.

2. Installation Complexity: Installing a tankless water heater can be more complex than installing a tank-style unit, requiring the assistance of a professional plumber and gas fitter.

3. Potential for Cold Water Sandwich: In areas with low water pressure or high demand for hot water, there may be a short delay as the water is heated before it reaches the tap, resulting in a "cold water sandwich" effect.

4. Possibility of Condensation: Gas-fired tankless water heaters can produce condensation, which can lead to issues if the unit is not properly vented.

5. Limited Capacity: While tankless water heaters offer endless hot water, their capacity is limited by the size of the unit and the incoming water temperature.

The Smith AT-KJR3U-OS-N Tankless Water Heater Gas Model 140 offers several advantages, such as energy efficiency, endless hot water, compact size, long lifespan, and potential savings on energy bills. However, it also comes with some disadvantages, including a higher upfront cost, installation complexity, potential for cold water sandwich, possibility of condensation, and limited capacity.

After considering the pros and cons, investing in a tankless water heater like the Smith AT-KJR3U-OS-N Gas Model 140 can be a wise decision for those seeking energy savings, continuous hot water, and a more compact unit. However, it is essential to weigh the benefits against the higher upfront cost and potential installation challenges to ensure it is the best choice for your specific situation.

If you are considering purchasing the Smith AT-KJR3U-OS-N Tankless Water Heater Gas Model 140 or a similar tankless water heater, carefully evaluate your needs and budget. Consider consulting with a professional plumber or gas fitter to understand the installation process, costs, and any potential complications. Additionally, research available rebates, incentives, and financing options that may help offset the higher upfront cost and make the investment more affordable.

Details:

Currently sales at Lowe's for $999. Endless/on-demand hot water. Key specs commonly associated with this unit: Outdoor installation only. Smith AT-KJr3U-OS-N is an outdoor natural-gas tankless water heater made by.

Natural Gas or propane. Includes Owners Install/Manual. Its part of the 110U outdoor series.

part #: atkjr3uos price

• $399.00

specifications wateheat:

• brand: A. O. Smith
• mpn: At-kjr3u-os-n
• type: Tankless Water Heater/boiler
• power source: Ng, Propane Gas
• heating system: Instantaneous
• btu/h heating rating: 140, 000 Btu
• mounting location: Outdoor
• country of origin: Japan

offer wateheat:

• availability: In Stock
• sold: 0
• quantity: 1
• options: Seller-arranged-local-pickup
• started: May 21, 2026

payments wateheat:

• credit card: Visa
• wallet: Apple-pay
• other

seller wateheat:

• # reviews: 11899
• city: Santa Clarita, California
• rating: 100.0%

returns wateheat:

• method: Money back
• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

general wateheat:

• condition: Used
• Heating, Cooling Air > Water Heaters > Tankless Water Heaters

shipping wateheat:

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