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A.O. Smith Signature Series 6.6-GPM 160000-BTU Indoor Natural Gas Tankless Water Heater

SKU Model #GT15-240-NI
Original price $1,219.99 - Original price $1,219.99
Original price
$1,219.99 - $1,219.99
Current price $1,219.99
A. O. Smith's Signature Series Condensing Indoor Tankless Ultra-Low NOx Gas Water Heater uses up to 160,000 BTU/h of natural gas to deliver a 6.6 gallons per minute flow rate (based on a 35°F rise) of continuous hot water for your home when sized appropriately. This makes it a good match for whole home applications. A. O. Smith Tankless Gas water heaters only heat water when needed, making them one of the most energy efficient ways to heat water. This super high efficiency condensing indoor model has a 0.94 Uniform Energy Factor (UEF) and can reduce your energy consumption and save money on your energy bills. Additionally, our Tankless Gas design can be easily wall-mounted indoors, saving you valuable storage space. This model may qualify for additional energy efficiency rebates and tax credits in your local area. See Lowe's Rebate Center for details. Not sure if this is the right water heater for you? Use our product selector tool to see if this model is the right fit for your hot water needs. Tankless gas water heaters have special installation requirements. Professional installation is required.
  • Enjoy continuous hot water for up to 2 simultaneous showers and 3 sink when sized appropriately (sink and shower calculations are based on a 0.5 GPM faucet and a 2.5 GPM showerhead in the southern zone)

  • Save money and energy with our ENERGY STAR® qualified Ultra-Low NOx indoor model that operates at a 0.94 Uniform Energy Factor (UEF)

  • Compact, indoor wall-mounted design frees up valuable storage space

  • Professional installation required - call 877-GO-LOWES

  • Uses 1/2 inch gas line up to 10 feet or 3/4 inch gas line for longer lengths

  • Easy temperature adjustment and troubleshooting with integrated controls

  • Copper primary heat exchanger and stainless steel secondary heat exchanger provide superior heat transfer and protection resulting in extended product life

  • Worry free safety features include freeze, overheat, and surge protection as well as troubleshooting diagnostic codes

  • 15-Year limited heat exchanger, 5-Year parts, and 1-Year limited labor warranty gives you peace of mind

All orders take about 2-24 business hours to process and ship out.

Your order will be packaged with care and discretion. Items are securely wrapped to prevent shifting while in transit.

Orders Over A Certain Weight Are Subject To Pallet Deliveries Which Could Be Subject To Higher Shipping Costs, However Shipping Speeds Remain The Same 1-4 Days, Depending On Location.

When your order is shipped, you will receive an email notification which includes a tracking number. You can also track your order through your profile page here.

-We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

-Please note: After 30-Days a Restocking Fee will be applied to all returns after 30-Days.
-To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
-To start a return, you can contact us at or come in-store. 
-If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

-Unfortunately, WE CANNOT accept returns on Clearance, Sales Items & Gift Cards

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

-The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

-We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 2-5 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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