40 Gallon Tall Natural Gas Water Heater - 12 Year Warranty

40 Gallon Tall Natural Gas Water Heater - 12 Year Warranty

Model: NU40T121-403    Lowe's Item* #: 333573


  • 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 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
  • Ultra Low NOx

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Product Dimensions
Height w/Draft Hood:62.25"
Weight:129 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:Ultra 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
Ultra Low NOx:Meets SCAQMD Rule 1121
40 Gallon Natural Gas Water Heater - NU40T121-403 4.5 5 52 52
good good. I don't writ good in English. I am very sorry. July 16, 2014
es a great product my decision to buy whirlpool water heater,good experience in the past. May 11, 2014
This product was an exact replacement of previous GE unit. This model was almost identical to the water heater that it was replacing and had the same specifications and warranty period. I was able to use the earthquake straps that were installed 12 years ago and all connections were in the same locations, so only the exhaust vent pipe had to be shortened slightly which took a couple of minutes. The installers had no problems and the entire process took less than 3 hours, which was very cost effective. March 31, 2014
Good for House My only concern is the thrumming sound the heater makes. I'm told the thrumming is the sound of trapped air and that the noise will go away in a couple of weeks. I hope so; it's loud. Otherwise, I like this heater. Home Depot and Sears had poor selections. I bought this one at Lowes. March 19, 2014
Like features, 12 warranty and good looking Installation was streight forward, having Plumber with right tools made easier. Assist plumber with installation. Easy instructions helped make install go smoother. selected unit for number of reasons, 12 yr warranty was one. March 12, 2014
It may be a great product. It may be a great product. However, because it just installed for one ore week. So far so good.! February 23, 2014
works and looks great the water heater was easy to install. it looks great and works great. no complaints. February 23, 2014
This is the best water heater we have ever purchased. The only thing that we found odd was that when the water is turned on, the water heater hums. According to the manual, this is a normal occurence. Water heater works great otherwise! February 22, 2014
Sleek and compact 40 gal heater Sleek profile, fast heating, easy to light, and quiet operation. Looking forwards to years of trouble free service. February 20, 2014
3rd Purchase of this water heater for an apartment bldg The third of 3 hot water heaters failed this week. The others failed mid summer last year. I replaced all with the NU40T121-403, 40 gallon water heater, with 12 year warranty. It is very easy to install, very easy to ignite the pilot light, and very easy to check on the status of the pilot light due to the blinking status lamp that monitors the pilot flame. Looking forward to a long problem free installed period. As I am not one of my renters I can not confirm that the gas bill dropped, but I rather expect it did so. February 19, 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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