A.O. Smith Signature 100 G12-T5040NVR Gas Water Heater

Name: A.O. Smith Signature 100 G12-T5040NVR Gas Water Heater
Brand: A.O. Smith
SKU: 1000542601
Availability: InStock

$0.00

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Nominal Capacity 30 40 50 98

Warranty 6-year limited 9-year limited 12-year limited

The A.O. Smith Signature 100 Series tall natural gas water heater delivers reliable and efficient hot water performance tailored for households of 5 to 6 people. Powered by a 40,000 BTU low-NOx atmospheric burner, it provides exceptional recovery and reliable output while operating without the need for an external power source.

Equipped with Tank Guard advanced tank protection and a self-cleaning dip tube to reduce sediment buildup, this unit is engineered for enhanced durability and extended operating life. An electronic gas control valve offers precise temperature regulation, push-button ignition, and an integrated LED diagnostic indicator for easy operation and monitoring.

Key Features

Brand	A.O. Smith
Model Number	G12-T5040NVR
Series	Signature 100
Product Type	Tank Water Heater
Fuel Type	Natural Gas
BTU Rating	40000
Uniform Energy Factor	0.62
Nominal Capacity	189.3 L
Rated Storage Capacity	181.7 L
First Hour Rating	318 L
Recovery Rate at 50°C Rise	162.8 L/hr
Height	154.3 cm
Diameter	55.9 cm
Weight	74.8 kg
Vent Type	Atmospheric (Type B Double Wall)
Vent Diameter	7.6 cm
Water Connection Size	3/4-in
Water Connection Location	Top
Ignition Type	Piezo
Emission Rating	Low NOx
High Altitude Certified	0 m to 3078 m
Certifications	CSA, AHRI

Highlights

Peace of mind with Flame Guard, which reduces the risk of accidental flame ignitions - standard in all Signature 100 Gas Water Heaters

Helps prevent corrosion with protective lining inside the tank, designed to extend the life of your water heater for years to come!

Signature 100 Series come with a limited 6, 9 or 12 Year Warranty for added protection.

Innovative safety features & long-lasting durability makes it reliable, requiring Low Maintenance

Compatibility

Compatible with standard indoor residential plumbing systems requiring a 3/4-in top water connection, natural gas supply line, and a 7.6 cm Type B double-wall atmospheric vent line. Suitable for high-altitude operation up to 3078 m.

Warranty

12-year limited tank and parts guarantee and a 3-year limited labor warranty

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Frequently asked questions

What household size is this water heater designed for?

This unit is sized appropriately to provide efficient and reliable hot water for households with 5 to 6 people.

Does this water heater require an electrical connection?

No, the electronic gas valve operates and provides precise temperature regulation without needing an external electrical power source.

What venting type is required for installation?

This model utilizes an atmospheric vent designed for Type B double-wall venting with a 7.6 cm diameter.

What features help protect the tank against sediment and corrosion?

It features Tank Guard protective lining to resist corrosion and a self-cleaning dip tube to reduce internal sediment accumulation.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

Orders typically ship within 5–7 business days. Returns are accepted within 30 days of delivery — see our Shipping Policy and Refund & Return Policy pages for full details.