SKU: 42640127454

A.O. Smith Signature 100 40-Gallon Short 6-year Limited 40000-BTU Natural Gas Water Heater

Sale price$247.05 Regular price$274.50
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

A.O. Smith Signature 100 40-Gallon Short 6-year Limited 40000-BTU Natural Gas Water HeaterA. O. Smith's Signature 100 Series 40 Gallon Short Low NOx Atmospheric Vent Natural Gas Water Heater is designed to provide efficient and reliable hot water for households with 3 to 4 people when sized appropriately. With an environmentally friendly 40,000 BTU Low NOx gas burner, this model delivers 67 gallons of hot water in the first hour. It features an electronic gas valve that provides precise temperature control for optimum hot water delivery

A. O. Smith's Signature 100 Series 40-Gallon Short Low NOx Atmospheric Vent Natural Gas Water Heater is designed to provide efficient and reliable hot water for households with 3 to 4 people when sized appropriately. With an environmentally friendly 40,000 BTU Low NOx gas burner, this model delivers 67 gallons of hot water in the first hour. It features an electronic gas valve that provides precise temperature control for optimum hot water delivery without the need for an external power source. For your convenience, the gas valve also includes an LED status indicator for diagnostics reporting and a push button ignition to simplify the startup process. A. O. Smith’s 40-gallon model is designed with your safety in mind. With a built-in safety system, this model reduces the risk of accidental flammable vapor ignitions. A factory-installed temperature and pressure relief valve and tamper-proof drain valve also ensures safe operation. This model is built to last. It features a protective anode rod and a ceramic fused tank shield designed to reduce corrosion and provide ultimate tank protection. It also features a self-cleaning dip tube designed to reduce sediment build-up and extend the overall life of the water heater. This added protection comes with a 6-year limited warranty to give you additional peace of mind. 

  • Ideal hot water delivery for households with 3-4 people when sized appropriately

  • Environmentally friendly 40,000 BTU Low NOx gas burner delivers 67 gallons in the first hour

  • Electronic gas valve provides precise temperature control for optimum hot water delivery

  • Self-diagnostic electronic gas control incorporates an LED status indicator that monitors and reports on system operational status

  • Built-in safety system reduces the risk of accidental flammable vapor ignitions

  • Short 51.5-in H x 22-in diameter design is ideal for condensed spaces like under staircases and closet installations

  • Protective anode rod and fused ceramic tank shield provide superior tank protection and extend water heater life

  • High-altitude certified from 0 ft to 10,100 ft

  • 6-Year limited tank and parts, 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: 42640127454

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4.2 ★★★★★
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Cait E
San Leandro, US
★★★★★ 5
These ACTUALLY stay put all day long - I was skeptical, but am so glad I took a chance on these
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I was so skeptical about whether these would stay on my feet all day without sliding down into my shoe - I’ve tried so many socks in the past with the silicone strip on the heel which failed. I’ve owned these for a couple months now and they have never slipped down - they stay put all day! I love the variety of colors to choose from, and the value per pack is great since six pairs come per pack (I thought it was only three when I first purchased and was pleasantly surprised by the additional pairs). They also have perfect thickness - not too warm to wear during the summer months with sneakers; I live in a tropical climate, though, so I’m not sure how they will do in cooler climates. I’ve washed each pair once or twice and the color and quality of the silicone has stayed so far (knock on wood). Overall: high recommend based on my experience so far!
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Reviewed in the United States on September 13, 2025
M
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Maggie Vega
Cuba, US
★★★★★ 5
Great fit!
Size: Medium, Color: (403) Washed Navy / Washed Navy / Blue Smoke
Great quality!
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Reviewed in the United States on May 15, 2026
K
Verified Purchase
Kira Stewart
Birmingham, US
★★★★★ 5
My favorite socks
Size: Medium, Color: (659) Fuchsia Dusk / Fuchsia Dusk / Tourmaline Pink
Very comfortable. True to size. Moisture wicking
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Reviewed in the United States on April 25, 2026
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Theresa
New York, US
★★★★★ 4
No show but stays on
Size: Medium, Color: (014) Halo Gray / Halo Gray / Castlerock
I wear these socks daily. They truly don’t show with my workout shoes or with hey dudes. But the best thing about them is that they actually stay on your foot. I work out hard and I don’t ever have to pull them up. I do wish they were just a little bit thicker than they are, but they are definitely a product I will buy again.
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Reviewed in the United States on May 22, 2026
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Marlana
Bozeman, US
★★★★★ 5
I like the ankle length, they don’t slip.
Size: Medium, Color: (025) Castlerock / Castlerock / Anthracite
I love these socks, they are thick enough to not be scratchy, thin enough to be cool and breathable.
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Reviewed in the United States on March 28, 2026

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