SKU: 3661919200

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

$549.00 $610.00
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

A.O. Smith Signature Series 6.6-GPM 160000-BTU Indoor Natural Gas Tankless Water HeaterA. 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 35F 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

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

  • 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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3661919200

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4.5 ★★★★★
Based on 1283 reviews
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Verified Purchase
Christina Billings
Belleville, US
★★★★★ 5
Favorite Winter Bedding!
Color: Red Buffalo Plaid, Size: King
Cozy, warm, and so so soft! Washes up beautifully! A great bed set for the cost. Thank you!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
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Verified Purchase
Linus' Mama
West Palm Beach, US
★★★★★ 5
Love it!
Color: Red Buffalo Plaid, Size: Full/Queen
Instantly became my favorite comforter for winter months. Colors are vibrant and beautiful; soft and warm; appears to be durable. I would get another of it came in others colors. Paired with the Amazon Basics red buffalo plaid sheet set. Matches my pajamas and my dogs’ bandannas perfectly!
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Reviewed in the United States on December 1, 2025
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Verified Purchase
LadyDeath/TxTunesLady
Whiting, US
★★★★★ 5
Warm, cozy, soft, 💜 love
I don't leave reviews very often (yes that is cliche) I just don't have time. I have been debating for a few months one what I actually wanted to do with my bedroom. Spring is coming and the dark is getting to me and wanted to still get an elegant feel. I have some light baby blue around in my other comforter but I needed lighter brighter. I saw this and how SOFT is looked and I LOVE soft and cozy, who doesn't? I am so glad I took the chance. With that I also ordered the pillow....what I thought were pillows but didn't read very clearly they were just the covers so I ordered pillows then the picture I knew would still be elegant but be able to tie all the peices in and OFF the internet. Sometimes colors are not the same online as in person since monitors are always different shades of a color. Now on to this comforter. I didn't realize it came with the pillow covers. 💜 the set comes vacuum sealed but it is heavy when vacuumed. I undid the packaging a day later when I had time to wash. The cover flew out and I was perplexed, it's a pillow cover!!!! Awesome!!!! Ohhh there's 2, woohoo! Omg it's so soft. Oh I'm in heaven. Mmmmm hugging the pillow cover, I knew this was my kinda softness bed comforter. It is not LIGHT weight like say a throw blanket but it is light vs heavy bulky goose downs even though they say those are light. And when you wash it, its def not heavy if u spin the water out at super high setting on ur washer. I was able to carry it to the dryer fairly easy 20 ft away. This is by far the BEST comforter I bought in my life. I am a hoarder when it comes to comforters. Thinking if I'm ever homeless I'll have lots of somethings to keep me warm. For the price and the quality, (the batting inside doesn't shift when washing) this will be another purchase in the future in another color so I can start a soft collection. I usually give my comforters that I dont use ( the oldest but still perfect condition) to a friend or homeless. Great product!!!!
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Reviewed in the United States on February 6, 2020
L
Verified Purchase
Luis
Lowell, US
★★★★★ 5
Soft warmth for cold nights
Color: Charcoal, Size: King
This bedding set with faux mink fleece and sherpa backing is perfect for cold weather or low-heated rooms. It’s ultra-soft on both sides, and the down-alternative fill keeps warmth in without feeling heavy. The reversible design lets you switch up the look, and the stitching holds up well. Even after several washes, it keeps its texture and shape. No clumping or loss of loft. A practical choice for anyone who wants comfort, warmth, and simple style.
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Reviewed in the United States on October 14, 2025
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Verified Purchase
Laurie
Natrona Heights, US
★★★★★ 5
Great bedding at a great price!
Color: Tide Pool Blue, Size: King
I can’t believe how great this is for the price! Super soft, comfy and very warm. Perfect for wintertime. I don’t think I’d use it for other seasons…but it’s great right now.
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Reviewed in the United States on January 29, 2026

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