Hero image 0 of AO Smith GT-340-NI 180000 BTU NOx Condensing Indoor Natural Gas Tankless Water Heater, 0 of 1
AO Smith GT-340-NI 180000 BTU NOx Condensing Indoor Natural Gas Tankless Water Heater
Key item features
- Efficient Performance: This tankless water heater boasts a flow rate of up to 8 GPM and is ENERGY STAR qualified, indicating high operational efficiency.
- Environmental Compliance: Features Ultra-Low NOx emissions and utilizes condensing technology, allowing for 3 PVC venting.
- Robust Construction: The primary heat exchanger is constructed from commercial-grade copper, ensuring durability.
- Flexible Installation: Certified for altitudes up to 10,100 ft. and offers 0 clearance to combustibles for indoor models.
- Convenient Controls: Supplied with a power cord and remote control, with indoor models featuring an integrated temperature controller.
- Operational Range: Designed to operate within a water pressure range of 15-150 psi.
- Potential Savings: May qualify for local tax credits or rebates, offering potential cost benefits.
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Specs
- Water heater typeTankless Water Heaters
- BrandAO Smith
- Volume capacity8 gal
- Rec locationIndoor
- Has written warrantyNo
- Power typeGas
Current price is USD$999.00
Price when purchased online
- Free shipping
Free 30-day returns
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How do you want your item?
Columbus, 43215
Arrives by Fri, Feb 20
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Sold and shipped by Castle Distribution LLC
3.3777777777777778 stars out of 5, based on 45 seller reviews(3.4)45 seller reviews
Free 30-day returns
About this item
Product details
The 340 series offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3” PVC venting and has 0” clearance to combustibles. Indoor models are certified up to 10,100 ft. altitude. Indoor models have an integrated temperature controller and outdoor models include a remote control as a standard feature.
- Ultra-Low NOx Emissions
- Flow Rate up to 8 GPM
- Water Pressure: 15-150 psi
- ENERGY STAR® qualified
- May qualify for local tax credit or rebate
- Primary Heat Exchanger is constructed of Commercial-Grade Copper
- Supplied with a power cord and remote control
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Water heater type
Tankless Water Heaters
Brand
AO Smith
Volume capacity
8 gal
Rec location
Indoor
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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Customer ratings & reviews
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Showing 1-3 of 6 reviews
Dec 9, 2025
Daniel
5 out of 5 stars review
Easy install
Unit was readily available at a good price. Installation was simple. Instructions and setup easy to follow.
Review from aosmith.com
Helpful?2RFGUE6MB62R347342397
Sep 8, 2025
Mark
5 out of 5 stars review
Never run out of hot water!!
Installation is cleaner looking now that the old water tank is gone . Very reliable continuous hot water all the time!
Review from aosmith.com
Helpful?2RFGUE6MB62R347342397
Oct 20, 2025
Jim K
5 out of 5 stars review
easy to install
This product was easy to install and works very well.
Review from aosmith.com
Helpful?2RFGUE6MB62R347342397
