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 5 210 210
easy easy easy Super easy to install. Works fabulous right out of the box. September 16, 2014
Easy install, good reputation I checked reviews on the models in my local Home Depot and Lowes, this model was a clear leader. Just installed today, works good, came with TP valve installed, pipe insulation. Electronic ignitor, click the button for spark, an led flashes when lit. It is smaller diameter than the same 50 gal it replaced, made it easier to install in my tight spot of 23.75 width. September 15, 2014
Working great! It is doing a wonderful job! I like the ease of lighting and the up front temperature control is simple to use. With the better quality burner it needs a bit more care than the old style heaters but the reheat time is pretty good. September 4, 2014
Only one complaint After our new water was installed we find it does not deliver hot water at the same volume/pressure as our older heater. September 4, 2014
Good replacement, no installation issues Only had it a week now but, seems to work great. Only complaint is that it's a little louder than the old one. Installation process was easy. Quick swap out of the old 50 gal. fit perfectly. September 3, 2014
This water heater has great features for the price. This water heater was so easy to install. Only needed help to get it up on the block. Features are great, so easy to light. Very happy with my water heater purchase. August 28, 2014
Easy to install Easy to install & fast start up. Had hot water in 45 minuets. August 27, 2014
This product seems to have nice quality. I was real worried when my old water heater gave out in my new home. After replacing it with a Whirlpool to my surprise I felt real good about the replacement. I also purchased an extended warranty with it so hopefully I will not have to replace it for a long time. Installation went real well also. August 22, 2014
This product has great features This product has great features and easy to install. August 18, 2014
Control Unit is easy to understand and operate I have installed 2 of these units............the second was mine and very easy to install and operate. My friend that I installed the first one, is very satified with it and has had it for almost a year. August 13, 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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