A.O. Smith Signature 100 G9-T5040NVR Natural Gas Water Heater

Name: A.O. Smith Signature 100 G9-T5040NVR Natural Gas Water Heater
Brand: A.O. Smith
SKU: 1000542593
Price: 450.45 USD
Availability: InStock

$450.45 $819.00

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 Series natural gas water heater provides dependable and efficient hot water delivery for households of up to 6 people. Featuring an environmentally friendly 40,000 BTU Low NOx gas burner, this unit produces 84 gal (317.9 L) of hot water in the first hour while utilizing Tank Guard® engineering for extended tank life.

Equipped with an electronic gas valve for precise temperature control without an external power source, the unit features an LED diagnostic indicator and push-button piezo ignition. Safety is enhanced through a built-in flammable vapor ignition reduction system, a factory-installed temperature and pressure relief valve, and a tamper-proof drain valve.

Key Features

Brand	A.O. Smith
Series	Signature 100
Model Number	G9-T5040NVR
Fuel Type	Natural gas
BTU Rating	40000
Type	Tank
Water Heater Style	Tall
Nominal Capacity	189.3 L (50 gal)
Rated Storage Capacity	181.7 L (48 gal)
Height	154.3 cm
Diameter	55.9 cm
Depth	55.9 cm
Weight	74.8 kg
Venting Type	Atmospheric
Vent Type	Type B double wall
Vent Diameter	3-in
Water Connection Size	3/4-in
Water Connection Location	Top
Uniform Energy Factor	0.62
Ignition Type	Piezo
Emission Rating	Low NOx
Foam Insulation Thickness	5.1 cm
First Hour Rating	317.9 L (84 gal)
Recovery Rate at 50°C Rise	162.8 L/h (43 GPH)
Installation Location	Indoor / Closet
High Altitude Certified	0 m to 3,078 m (0 ft to 10,100 ft)
Safety Listing	CSA safety listing
AHRI Certified	Yes

Highlights

40,000 BTU Low NOx natural gas burner delivers 317.9 L (84 gal) first-hour rating
Self-diagnostic electronic gas control with LED operational status light
Tank Guard® system engineered to extend tank life and durability
Piezo push-button ignition simplifies startup without external electrical power
Slim 154.3 cm H x 55.9 cm diameter design fits easily in tight spaces

Warranty

9-year limited tank and parts warranty and a 2-year limited labor warranty.

Downloads

Frequently asked questions

What household size is this water heater designed for?

This model is designed to supply hot water for households with 5 to 6 people when properly sized.

Does this water heater require an external electrical outlet?

No, the electronic gas valve operates and provides precise temperature control without requiring an external power source.

What is the maximum operating altitude for this unit?

This unit is high-altitude certified for operation from 0 m up to 3,078 m (0 ft to 10,100 ft).

What safety mechanisms are built into the unit?

It includes a safety system designed to reduce accidental flammable vapor ignition risks, along with a factory-installed temperature and pressure relief valve.

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.