50 Gallon Tall Natural Gas Water Heater - 9 Year Warranty

50 Gallon Tall Natural Gas Water Heater - 9 Year Warranty

Model: N50T91-403    Lowe's Item* #: 333571


  • 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:60.75"
Weight:148 lbs.
Vent Type:Type B Double Wall
Vent Diameter:3"
Configuration and Overview
Capacity:50 Gallons
Family Size:5+
Energy Star Certified:No
Energy Factor:0.58
Annual Cost of Operations:$282
LCD Display:No
Self Cleaning:Yes
Warranty Tank:9 Years
Warranty Parts:9 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:0.58
50 Gallon Natural Gas Water Heater - N50T91-403 4.5 5 259 259
Works GREAT! Easy install and start up Works great & heats FAST! Great Value and Good warranty January 24, 2015
Great value and performance for the money. Great value, has all that you need for hot water. Easy to relight if pilot goes out. January 23, 2015
installed 2 days ago so far so good, i was expecting to spend less for installation but since the old one was over 20 yrs old we had to bring thinks up to code. January 18, 2015
So far, good water heater. Installation was straight forward. Quality seems good, lighting the pilot light was a snap. And I like the status light letting me know the flame is lit, or if there are other problems. January 17, 2015
Great experience with Install through Lowes. Professional plumber I would highly recommend purchasing this water heater at Lowes and having them intstall it. They handle all the paper work including the city permits. No mess, no fuss. January 17, 2015
The controls are hard to read and reach. At my age and with my knees, the controls are difficult to deal with. I would have paid extra to have eye level controls. January 13, 2015
simple not bad if you're not familiar with plumbing might want to have a friend who does January 6, 2015
Great design, easy to install. Replaced a 17 year old unit that was leaking, instruction were simple and installed in about an hour. January 4, 2015
It's dimensions matched those of the water heater I was replacing, so the install was pretty easy. I was glad that it matched the dimensions of my old water heater. It had to go through a very tight space. I wish that new hook up nipples would have been included with the package and instructions that clarified the fact that NEW hook ups (flex connections) would probably be needed. I wasted a bit of time making this discovery on my own. (Not that the guy a Lowes was much help either.....) January 1, 2015
Well designed and reliable, with ease of installation. This product is well designed and very easy to install. It has a very nice symmetrical shape and is easy to operate. I highly recommend it as a economical water heater. January 1, 2015

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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