40 Gallon Tall Natural Gas Water Heater - 12 Year Warranty

40 Gallon Tall Natural Gas Water Heater - 12 Year Warranty

Model: N40T121-403    Lowe's Item* #: 333564


  • FLAME LOCK® Safety System Reduces the Risk of Accidental Fires Involving Flammable Vapors
  • Electronic Gas Valve has fewer moving parts than a conventional mechanical gas valve, for durability and long life-no external power source is needed
  • Self-Diagnostic Electronic Gas Control incorporates an LED status indicator that monitors and reports on system operational status
  • Piezo Electric Igniter makes lighting the pilot fast and easy
  • Environmentally friendly polyurethane foam insulation reduces heat loss for maximum efficiency, saves money
  • Ceramic tank lining and aluminum anode rod protects tank from corrosion, for long tank life
  • Factory installed temperature and pressure relief valve ensures safe operation

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Product Dimensions
Height w/Draft Hood:62.00"
Weight:127 lbs.
Vent Type:Type B Double Wall
Vent Diameter:3"
Configuration and Overview
Capacity:40 Gallons
Family Size:4
Energy Star Certified:No
Energy Factor:0.59
Annual Cost of Operations:$277
LCD Display:No
Self Cleaning:Yes
Warranty Tank:12 Years
Warranty Parts:12 Years
Warranty Labor:1 Year
BTU Input:40,000 BTUs
Emissions Standards:Low NOx
Ignition Type:Pilot with Piezo Igniter
Foam Insulation:1 inch
Water Connection Location:Top
Water Connection Size:3/4 inch
T&P Relief Valve:Yes
Energy & Eco-Friendly
Energy Factor:0.59
40 Gallon Natural Gas Water Heater - N40T121-403 4.6 5 166 166
Hottest water so far! Wow! What a difference in the amount of hot water! Out unit is set only at hot and it cranks out more hot water than our 16 year old heater ever did! I did not rate the quality yet is it was just installed, but it seems like a well built unit. Like the darker color gray vs the white color. My friend just bought a 50 gallon 6year Whirlpool hot water heater, but I decided to go for the 40 gallon but with a 12 year warranty for the piece of mind, especially with the new sensors up front. We'll see if it lasts that long! July 14, 2011
like the name and looked I have put in several heaters for my self and as favor for others over the years, and this one as been a very easy one for me to install, and at my age now I could not complain. Only problem I had the old heater was 9" shorter than the new one, had to do some adjustment, lucky I was handy man enough to do my self. I would need more time to see how it is on my energy bill, and so forth so far 2 days been great! December 19, 2014
A great feature for all to have on a water heater There is a feature on this water heater that will be most helpful. There is a warning light to let you know when the therm o couple is low, and needs replacement. December 12, 2014
So far the unit is doing excellent. So far the unit is doing excellent. If it continues perform well, I will definitely recommend it to all my friends. December 10, 2014
it was easy to install and light up and at a reasonable price I like my new tank because the price was reasonable. I was looking for something I could easily handle with a little help. The tank is light to handle and the installation was a piece of cake. I bought the connection kit and had no problem. The pilot light was not a problem. I am happy with it. December 10, 2014
Great Product Installation Instructions very good. Make sure you can sweat pipe fittings before starting removal and installation. November 19, 2014
long warranty This water heater was made in the United States of America. It is a well known company. October 22, 2014
product has great features the product was easy to install and it is a very reliable product. October 13, 2014
Great ADVERTISED features It is too soon to evaluate this product. It seems to be fine. The warranty has too many reatrictions and does not cover shipping charges, which should be your reaponsibility if you made and sold a defective product. I cannot recommend this product and will not purchase another for this reason. October 10, 2014
Great features Product has a good enery saving avg and it is easy to install. September 29, 2014

Owners Manual
Comprehensive information about your new appliance - from getting started to cleaning and maintenance - with answers to frequently asked questions.

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Troubleshooting & Repair

IMPORTANT - Read and follow the printed Installation Instructions that came with your water heater. The printed Instructions and product labels contain model-specific information, important warnings and safety notices. If you lack the necessary skills to install, troubleshoot or repair the water heater, get help from a qualified person.

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