40 Gallon Short Natural Gas Water Heater - 9 Year Warranty

40 Gallon Short Natural Gas Water Heater - 9 Year Warranty

Model: N40S91-403    Lowe's Item* #: 333562


  • 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

Shop NowAll products available exclusively through Lowe's Icon
Product Dimensions
Height w/Draft Hood:52.25"
Weight:132 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 - N40S91-403 4.5 5 142 142
hot this heater has not run out of hot water yet and i sometimes take long showers June 21, 2015
Installation It was simple to set up! I would definitely refer this to my friends and family who needed to replace an old water heater. June 13, 2015
Quality Product Easy install ! More btu's then model being replaced. HOT WATER !! May 21, 2015
Works wonderufully I don't regret this purchase at all. I think this machine works wonders. It is easy to install and cheap as well May 18, 2015
Good value Decent product. Good price and a 9 yr warranty. Was easy to install and easy to start. June 29, 2015
Hot Water Heater Replacement I am glad I was able to receive a replacement hot water heater for my rental property. June 28, 2015
Serves its purpose Price a little high, but glad to get a 9 year warranty. Easy to install. Serves its purpose June 22, 2015
Excellent This water heater was a replacement for one that was over 20 years old. It installed easily and works great. April 27, 2015
Can't go wrong for the price Looks good, works good ,easy to install, well written instructions April 20, 2015
great features simple to operate, heats up fast, installed pretty simply just like any other heater, pop off valve was bad, but the new one was ten bucks and we were in business April 13, 2015

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

You may need to install Adobe Reader  Adobe Acrobat Reader to view these documents.

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.

You may also like