A.O. Smith Signature 100 G9-T4040NVR Natural Gas Water Heater

Name: A.O. Smith Signature 100 G9-T4040NVR Natural Gas Water Heater
Brand: A.O. Smith
Price: 400.95 USD
Availability: InStock

$400.95 $729.00

Taxes included. Shipping calculated at checkout.

Nominal Capacity 30 40 50 98

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

The A.O. Smith Signature 100 natural gas water heater delivers reliable, energy-efficient hot water designed specifically for households of up to 4 people. Engineered with Tank Guard technology, it offers superior corrosion protection to ensure an extended tank lifespan and dependable everyday operation.

Equipped with an electronic gas valve for precise temperature regulation, this atmospheric vent water heater includes a built-in safety system to guard against flammable vapor ignitions. Its slim, tall profile allows for easy placement in standard closets and compact indoor utility spaces.

Key Features

Brand	A.O. Smith
Model Number	G9-T4040NVR
Series	Signature 100
Fuel Type	Natural gas
Product Type	Tank Water Heater
Nominal Capacity	151.4 L
Rated Storage Capacity	143.8 L
BTU Rating	40000
Uniform Energy Factor	0.64
Water Connection Size	3/4-in
Water Connection Location	Top
Vent Diameter	7.6 cm
Vent Type	Type B double wall
Venting Type	Atmospheric
Ignition Type	Piezo
Height	156.8 cm
Diameter	50.8 cm
Weight	62.6 kg
Recovery Rate at 50°C Rise	159 L/h
Emission Rating	Low NOx
High Altitude Certified	Yes
Safety Listing	CSA safety listing
AHRI Certified	Yes

Highlights

Electronic gas valve for precise temperature control
Built-in safety system to prevent flammable vapor ignitions
Tank Guard® technology for extended lifespan
Slim design for narrow spaces
Certified for high altitudes

Warranty

9-year limited manufacturer's warranty

Downloads

Frequently asked questions

What household size is this water heater designed for?

This model is designed to provide sufficient hot water for households with 3 to 4 people.

What type of venting is required for this water heater?

It uses an atmospheric venting system compatible with Type B double-wall venting and a 7.6 cm vent diameter.

Can this unit be installed at high altitudes?

Yes, this natural gas water heater is certified for high-altitude operation.

What safety features are included?

It includes an electronic gas valve for temperature control, a temperature and pressure relief valve, and a built-in safety system designed to prevent flammable vapor ignitions.

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.