40 Gallon Tall Natural Gas Water Heater - 9 Year Warranty

40 Gallon Tall Natural Gas Water Heater - 9 Year Warranty

Model: N40T91-403    Lowe's Item* #: 333570


  • 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: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:0.59
40 Gallon Natural Gas Water Heater - N40T91-403 4.5 5 320 320
Good product a little high on the price Overall good but a little pricey for its size 40 gal June 17, 2015
Easy to install Installation is easy if you have plumbing skills and know how to sweat copper pipe. The natural gas version that I purchased was easy to light and the water seems hotter than the gas heater it replaced. Hope it last as long as the last one. June 15, 2015
Works well I was going through my records and just noticed I forgot to register the water heater I installed a few years ago. Installation went well and the heater is fast and quiet. June 11, 2015
Excellent quality I previously had a different model of this product. It lasted almost double of what was expected. That is the reason I replaced it with the same brand. The quality is excellent. May 25, 2015
Good Product So far its working fine, no other comment at this time May 22, 2015
This product has great features We recently bought this water heater. Haven't had it long. The water is hot and recovers quickly. The water heater is attractive and hope it has a long life May 17, 2015
Easy install, and great features. I installed this water heater with the help of a friend who is a contractor. It took less than 45 minutes for the tank to fill and for the water to reach the desired temperature. The easy to light piezo electric igniter for the pilot light is a nice feature and is a huge bonus. No more using matches or open flames. May 17, 2015
Easy install, quiet operation Easy to install, matched old water heater. Quiet operation. Seems to have enough hot water. May 14, 2015
this product is really good and efficient. This product is efficient and easy to install, reduce my electric bill. May 14, 2015
good features Installation was done by contractor although I observed the entire procedure. I had done the previous water heater myself and it was hard-piped. Contractor used flex lines so it was much quicker. It took 2 men one hour and 15 minutes to remove old heater install new heater and take old one away. Features of this water heater are good although I prefer water heaters that are white...this unit is gray. A much more industrial appearance rather than something that blends in with a residence June 26, 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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