Expansion Tanks
AO Smith 100052240 ENJB-40 Proline 40 Gallon Lowboy Residential Electric Water Heater - 6 Year Warranty
In Stock. Ships in 1-7 Business Days.

1 days | 2 days | 3 days | 4 days | 5 days | 6 days | 7+ days | |
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If picked up on... | Will be delivered by... | ||||||
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Saturday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Sunday | Tue | Wed | Thu | Fri | Mon | Tue | Wed |
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$350-$500 | EAST COAST By Zip Code & Weight |
$450-$750 | MIDWEST / SOUTH By Zip Code & Weight |
$650-$900 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NY / NJ / CT Metro Area |
$450-$550 | EAST COAST By Zip Code & Weight |
$600-$900 | MIDWEST / SOUTH By Zip Code & Weight |
$950-$1300 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NYC Metro Area |
$160 | Rest Of Contiguous US |
For any questions regarding shipping cost please Call us at 973-482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$30 | NY / NJ / CT Metro Area |
$60 | Across the USA |
For any questions regarding shipping cost please Call us at (973) 482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$75 | NYC Metro Area |
Not Available | Rest Of Contiguous US | We unfortunately can not ship this material outside of our trucking area. |
For any questions regarding shipping cost please Call us at (973) 482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$30 | Across the USA |
For any questions regarding shipping cost please Call us at 973-482-4444 or E-mail [email protected]
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$60 | Across the USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$70 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$110 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | Pickup |
$75 | NY / NJ / CT Metro Area |
Not Deliverable | Rest of Contiguous USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$200 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$40 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
FREE | NY / NJ / CT Metro Area |
$220-$300 | EAST COAST By Zip Code & Weight |
$300-$400 | MIDWEST / SOUTH By Zip Code & Weight |
$400-$450 | WEST COAST By Zip Code & Weight |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$50 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
$90 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$75 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
Shipping Cost by Destination
Shipping Cost | Shipping Destination |
---|---|
Free | NY / NJ / CT Metro Area |
$110 | Across USA |
Need it faster? Alternatives are available. For any questions regarding shipping cost please call us at (973) 482-4444 or email [email protected]. Please enter zip code at checkout for EXACT rates, these are estimates!
$978.36

$1,180.14

Product details
The ProLine Lowboy Side Connect electric water heater is designed to take up as little room as possible and is the ideal choice for when installation space is limited to tight spaces such as under counters and in crawl spaces.
With a 38-gallon tank, the ENJB-40 delivers a first hour rating of 46 gallons at an Energy Factor of 0.95. The sacrificial anode helps protect the tank from the corrosive effects of water, and is accompanied by a 6-year limited tank warranty.
AO Smith Proline® Specialty Water Heater

PROLINE® SPECIALTY ELECTRIC FEATURES
- TABLE TOP ELECTRIC WATER HEATER
- Model features a convenient flat porcelain surface at 36” height, providing extra “counter space” wherever installed. All plumbing and electrical connections are made through back of water heater. This heater is equipped with a PEX cross-linked polymer dip tube
- Compact design, side-mounted plumbing and electrical connections (optional top-mounted water connections for field conversion). Designed for installation under a counter, in a crawl space or in other tight spaces. Tank capacities range from 6 through 20-gallons and offer single heating element and durable tamper-resistant brass drain valve
- Designed for low-demand, point-of-use applications, such as office lavatories or buildings with remote restrooms. Models have 2 ½-gallon tank capacity and are equipped with a single heating element. Includes a standard 110/120V cord set with 3-prong plug and wall-mounting bracket for easy installation
- CSA Certified and ASNE Rated T&P Relief Valve
- Environmntally-Friendly NON-CFC Froam Insulation Minimizes Heat Loss
- Our anode rods have a stainless steel core that extends the life of the anode rod allowing superior tank protection far longer than standard anode rods
- Provides superior corrosion resistance compared to industry standard glass lining
- Our residential water heaters have a solid brass, tamper resistant, enhanced-flow, ball type, drain valve
- Uses a standard female hose fitting that allows for fast and easy draining during maintenance
- Designed for easy operation, this valve includes an integral screwdriver slot that features a ¼ turn (open/close) radius, which not only permits full straightthrough water flow but also a quick and positive shut off
- Meets UBC and ICC National Codes and listed with CEC
- Complies with the Federal Energy Conservation Standards effective April 16, 2015, in accordance with the Energy Policy and Conservation Act (EPCA), as amended
- Certified to UL 174 for Household Electric Water Heaters
- 6-Year Limited Tank and Parts Warranty
Specification Sheet
MPN ? Manufacturer Part Number | 100052240 |
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UPC / GTIN | 671657197025 |
Manufacturer | AO Smith |
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. | ProLine |
First Hour Rating | 47 Gallons |
---|---|
Kilo Wattage | 4.5 / 4.5KW |
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. | 31.75" |
Width (Inches) ? The horizontal measurement from left to right, measured in inches. | 24" |
Depth (Inches) ? Depth | 24" |
Gallons | 38 Gallons |
Voltage | 240 V |
Weight ? Weight | 121.00 |
Warranty ? The terms and conditions of the warranty provided for the product from the manufacturer. | 6 Years |
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Water Heater Type | Residential |
Type | Lowboy |
Water Connection Location | Side |
Fuel Type | Electric |
Energy Star | No |
Product Warranty | 6 Years Tank / Parts Warranty |
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