$. See Price In Cart
       Top        Info        Specs        Reviews

Item: | Model:

{{pdp.mainItemData.pctOff}}% Off
(List Price)


Estimated Weekly Lease
No Credit Required
Learn More

(List Price)
$. See Price In Cart
Condition Info:  
View Photos & Condition
SKU Number:

For this item you are required to buy the minimum quantity of {{so.mainItem.qty}} {{pdp.mainItemData.packageQuantity}}

Item Is Sold Out

For item availability and pricing information, please enter your zip code.

See Available Items

See All Buying Options
Available For:
Nearest Pickup Store:

, ,
Enter Another Zip Code
Shop By Condition
{{pdp.ecorebates[0].rebatePrograms.length}} Rebates up to {{pdp.ecorebates[0].maxRebateAmountLabel}}  
Click to Apply
{{pdp.ecorebates[0].rebatePrograms.length}} Rebates up to {{pdp.ecorebates[0].maxRebateAmountLabel}}
In Condition New Only

Other Buying Options
See Price In Cart

mi away,


The Kenmore 55640 40-gallon residential natural gas water heater is energy-efficient, with foam insulation, and has a cobalt blue glass-lined tank with a large anode rod to protect the tank from corrosion. It also includes a self-cleaning cold water inlet tube which reduces and protects against mineral build-up in the tank. A 40-gallon natural gas water heater is the minimum recommended size for a 2- to 4-person household with typical water use.
  • 6-year warranty on tank and parts
  • Energy-efficient foam insulation
  • Self-cleaning cold water inlet tube
  • Cobalt blue, ultra-coat, glass-lined tank with anode for corrosion protection
  • Factory-installed temperature and pressure relief valve

Protection Agreements

One smart decision calls for another. Safeguard your new purchase with the best repair and replacement coverage in the business. A Sears Protection Agreement picks up where the limited manufacturer's warranty leaves off. Enjoy the peace of mind that comes from having a plan that delivers what it promises. (Learn More)
Choose your protection agreement:


Gas Inlet Size 3/4 in.
Height to Gas Connection (In.) 13
Height to Vent Hood (In.) 62
Height to Water Connection (In.) 60.5
Tank Diameter (In.) 17.75
Tank Height (In.) 58.5
Tank Insulation Thickness 1 in.
Water Inlet/Outlet Size 3/4 in.
Size Category - Gallons 31 gallons to 40 gallons
Tank Nominal Capacity 40 gal.
Rated Storage Volume (gal.) 38
Color Family Gray
Uniform Energy Factor (UEF) 0.54
Materials & Finishes:
Tank Lining Glass
Flow Rate:
First Hour Rating (gal.) 66
Recovery at 90 Degree Rise (gph.) 41
Power & Performance:
Gas Input (btu/hr) 40000
Maximum Operating Pressure (psi.) 150
Parts Warranty 6 year limited
Tank Warranty 6 year limited
Product Includes:
Power Cord Included No
Tank Diameter Range (In.) Less than 18 In.
Relief Valve Included Temperature and Pressure
Product Overview:
Unit Location Indoor
Control Type Digital
Power Source:
Fuel Type Natural gas
Certifications & Ratings:
Altitude Rating (ft.) 5400
ENERGY STAR Compliant No
Appliance Features:
Heat Trap Fittings Yes
Heavy Duty Anode Rod Yes
Low NOx Burner Yes
Number of Anode Rods 1
Self Cleaning Yes
Tank Style Tall
Venting Atmospheric (standard)
Heating Range (deg F.) 55 - 155
Required Vent Size 3 in. or 4 in.

Product Documentation

Product Warranty - English
Energy Guide

Energy Star Logo   Energy Guide Logo

Manufacturer's Warranty
1 year parts and labor
SearsOutlet Certified
Find Out More »


Rating Breakdown


More Like This