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At a Glance
Warranty: 6-year limited
Tank Guard Extends Life
Family Size: 5
1k+ bought last week
A.O. Smith Signature 100 50-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
Item #962540 |
Model #G6N-T5040NVR
$689.00
$689
.00
Per Square Foot pricing is based on the area of a flat surface. Length x Width = Sq. Ft.
Per Linear Foot pricing is based on the length of a single roll. A linear foot of 10-foot-long-roll = 1 ft. x 10 ft. = 10 Sq. Ft.
Bulk Savings
$620.10/ Each (10.0% Off) when you buy 3+ Learn More...
Nominal Capacity (Gallons): 50
A.O. Smith Signature 100 50-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
4.5
$689.00
$689.00
In use/lifestyle images - accessories not included
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Learn MoreMake sure everyone in your 5+ person home has ample hot water with this A. O. smith 50-gallon water heater featuring atmospheric venting and a 40,000 BTU heater. The environmentally friendly design boasts a low NOx gas burner that produces 81 gallons of hot water in the first hour and an electronic gas valve for precise temperature control that ensures optimum hot water delivery without an external power source. The electronic gas valve also includes an LED status indicator for easy diagnostics reporting and a push-button ignition to simplify the startup process. Enjoy worry-free operation of this A. O. Smith natural gas water heater thanks to a built-in safety system that 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 Tank Guard® which is designed to provide ultimate tank protection and increase lifespan of the water heater. This added protection comes with a 6-year limited warranty for extra peace of mind. Call 1-877-GOLowes to get this water heater installed.
Delivers the ideal amount of hot water for households with 5+ people when sized appropriately
Features an environmentally-friendly 40,000 BTU gas burner that delivers 81 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 the system's operational status
Built-in safety system reduces the risk of accidental flammable vapor ignitions
Tall, slim 60.75-in H x 21-in diameter profile enables easier installation in narrow spaces
Tank Guard® provides advanced tank protection that extends the life of your gas water heater
High-altitude certified from 0 ft to 10,100 ft
Provides peace of mind with a 6-year limited tank and parts guarantee and a 1-year limited labor warranty
CA Residents: Prop 65 Warning(s)
General | |||
|---|---|---|---|
Series Name | Signature 100 | Fuel Type | Natural gas |
Type | Tank | Ignition Type | Piezo |
Power Source | Gas | Venting Type | Atmospheric |
Grade | Residential | Vent Type | Type B double wall |
Use Location | Indoor | ||
Dimensions | |||
|---|---|---|---|
Depth (Inches) | 21 | Rated Storage Capacity | 48-Gallon |
Diameter (Inches) | 21 | Vent Diameter(s) | 3-in |
Family Size | 5 | Water Connection Size | 3/4-in |
Height (Inches) | 60.75 | Weight (lbs.) | 148 |
Insulation Thickness (Inches) | 1.5 | Width (Inches) | 21 |
Nominal Capacity (Gallons) | 50 | ||
Features | |||
|---|---|---|---|
Annual Fuel Utilization Efficiency % (Percentage) | 0 | Pilot Reset Button | Yes |
BTU Rating | 40000 | Point of Use | No |
Emission Rating | Low NOx | Scale Prevention | No |
Foam Insulation | Yes | Super High Efficiency | No |
GPH Recovery at 90 Degrees F (Gallons) | 41 | Temperature and Pressure Relief Valve | Yes |
Grid Capable | No | Uniform Energy Factor | 0.62 |
High Altitude Model | Yes | Water Connection Location | Top |
Installation Location | Closet | Water Heater Style | Tall |
Pilot Light Window | Yes | ||
Compatibility | |||
|---|---|---|---|
Bluetooth Compatibility | No | Works with iOS | No |
Smart Compatible | No | Works with SmartThings | No |
Wi-Fi Compatibility | No | Works with the Google Assistant | No |
Works with Amazon Alexa | No | For Use with Mobile Homes | No |
Works with Android | No | For Use with RVs | No |
Works with Apple HomeKit | No | ||
Warranty | |||
|---|---|---|---|
Warranty | 6-year limited | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | AHRI Certified | Yes | |
ENERGY STAR Certified | No | AHRI Certification Number | 206911262 |
Safety Listing | CSA safety listing | ||
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 40101800 | ||
Check out the Best Selling Water Heaters on Lowes.com
Review
2947 Reviews
91% Recommend this product
Ratings may include incentivized customer reviews.
+ 76 images
What Customers Are Saying
The water heater is generally reliable and effective at heating water efficiently. Many users report the installation process is straightforward, with the unit fitting well in place of older models. However, some customers received defective units or experienced issues like leaks or the pilot light going out. Overall, the product performs well, but there are quality control and customer service concerns to consider.
Customer review summary generated by AI, including incentivized reviews.2947 Customer Reviews
Easy installation
Easy installation and startup, great hot water in an hour.
GaryMacDecember 9, 2025
From Signature 100 40-Gallons Tall 6-year Warranty 35500-BTU Natural Gas Water Heater Verified Purchaser
From Signature 100 40-Gallons Tall 6-year Warranty 35500-BTU Natural Gas Water Heater Verified Purchaser
Was this Review Helpful ?
So far so good
This hot water heater was a drop-in replacement for a GE (Rheem) that surprisingly lasted for 15 years. The installation was easy, and it fired up right away. I have a whole-house filtration system, which should help prolong the life of my HW heater. I got it at a great price and the associates were friendly.
StateStreetDecember 7, 2025
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.
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lmtjjtDecember 4, 2025
From Signature 100 40-Gallons Tall 6-year Warranty 35500-BTU Natural Gas Water Heater Verified Purchaser
From Signature 100 40-Gallons Tall 6-year Warranty 35500-BTU Natural Gas Water Heater Verified Purchaser
Was this Review Helpful ?
Water heaters are so hot
I appreciate that this water heater heated my cold water.
CccfixerDecember 3, 2025
From Signature 100 40-Gallons Tall 6-year Warranty 35500-BTU Natural Gas Water Heater Verified Purchaser
From Signature 100 40-Gallons Tall 6-year Warranty 35500-BTU Natural Gas Water Heater Verified Purchaser
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183 Questions
183 Questions
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