40 Gallon Short Natural Gas Water Heater - 6 Year Warranty

40 Gallon Short Natural Gas Water Heater - 6 Year Warranty

Model: N40S61-403    Lowe's Item* #: 333567


  • 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: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:No
Warranty Tank:6 Years
Warranty Parts:6 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 - N40S61-403 4.5 5 685 685
So far so good It installed fairly easily and is working like it should. I suppose the truth will be told in a few years, when I see if it performs like the last water heater which had been in the house since 1994. Fingers crossed, here's to another 20 worry-free years and lots of hot water. July 1, 2015
Good price, good service, good quality The installation went smooth from Lowe's and the unit has operated well. It provides plenty of hot water to serve two bathrooms, tubs and showers for five people. June 16, 2015
excellent product Love this heater. Works perfect and keeps us in hot water when needed. June 13, 2015
Four stars NO way How this product ever got four stars...no way. I bought it in 2011, the valve lasted 2 years, replaced in 2013, lasted two years and it is out again. Extremely disappointed and has it every occurred to Lowes to carry these valves if they are going to have to be replaced every two years. Must be defective parts, yet nothing done and I am out $60 postage and $300 in labor for the same part replaced twice. Never again. Hope this helps someone else. June 12, 2015
Easy replacement installation, with the exception of HW/CW fittings Instructions were straight forward and installation was relatively easy. The only issue I had was with the attachment of both the HW and CW fittings to the 3/4" FPT connections. I purchased new "Sharkbite" style copper fittings, in this case, 3/4"MPT X 1/2" Cu. Problem that arose is that the FPT connections are recessed below the surface of the top of the heater. I started the fitting into the threads by hand, but the hex on the fitting (for tightening) ended up below the surface, and impossible to get a wrench or even extended socket onto it, as the hex size does not leave enough room around it for a socket. I ended up having to return the fittings, and purchase brass female nipples and Sharkbite fittings with FPT connections to have access to the fitting hex for tightening them. June 7, 2015
First one I looked at and made purchase. The only negative item I found was that the outside packaging did not note what type of water line fittings were supplied or were needed. I had to tare open the top of the packaging to inspect the outlet and inlet connections to see what was needed. Moving it is definitely a two person task. The self sparking pilot lighter is definitely an improvement over the old match light system. June 2, 2015
Highly Satisfied! My 12 year old 40 gallon gas contractor grade water heater started showing signs of aging in my 2001 Ryland home. A friend in Richardson had a slight flooding problem when his 50 gallon water heater rusted out and leaked onto his first floor carpeting; he recommended that I check my water heater. Therefore I flushed it out using a garden hose, but only noticed some fine white flakes coming out at other end. When I noticed small leaking in water heater drain pan, I started looking for a replacement. I found a tankless water heater would be very difficult to install ... and since my water heater is in attic it made sense to replace with same 40 gallon water heater. I have three daughters who take marathon showers, therefore a 50 gallon water heater would be more costly per month for me. I purchased this Whirlpool 40 gallon water heater (and some parts) from Lowes on sale. My brother install it with the help of a daughter, pullys and rope. Taking down old water heater was harder because we couldn't get all the water out. Installing new water heater was easier because it was lighter. 2-3 hours later I had a new water heater installed plus saved $400-$500 installation costs. My total costs with parts were $400. I have never had a problem with Whirpool water heater in the past two years, not even a pilot relight. Highly satified! I put old water heater in front of house to be hauled away with trash pickup, but it was gone before nightfall. May 27, 2015
very pleaeed I purchased the same model water heater to replace the old one because it was reliable and lasted over the expected time. May 26, 2015
Fine product but loud The water heater is fine. When it is re-filling and heating it sounds like an airplane taking off. Quite loud. Otherwise no problems. May 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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