Name: A.O. Smith Signature 100 28-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket
Brand: A.O. Smith
SKU: 1000216777
Price: 499 USD
Availability: InStock
Rating: 4.4 (911 reviews)

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Rely on this A. O. Smith Signature 100 Series 28-gallon lowboy water heater for efficient and reliable hot water in households with 1 to 2 people when sized appropriately. Our unique low profile design with top connect water connections is ideally suited for installations with space constraints. This lowboy water heater is designed to last and features dual copper heating elements, a protective anode rod and a ceramic fused tank shield to reduce corrosion and provide ultimate tank protection. It also has a self-cleaning dip tube designed to reduce sediment build-up and extend the overall life of the double element water heater. This added protection comes with a 6-year limited warranty to give you additional peace of mind. Want to save money on your energy bills? This model operates at a 0.89 Uniform Energy Factor (UEF) which can reduce your energy consumption compared to less efficient models. Call 1-877-GOLowes to get this water heater installed.

Delivers the ideal amount of hot water for households with 1 to 2 people when sized appropriately
Features two 4,500-watt copper heating elements that provide a first hour delivery of 43 gallons
Operates at a 0.89 Uniform Energy Factor for maximum energy-efficiency and cost savings
Low-profile 30-in high x 20-in diameter design with top water connections allows for easy installation under counters or vanities and inside cabinets
Provides superior tank protection and extends water heater life with premium heating elements, anode rod and fused ceramic tank shield
Reduces heat loss with non-CFC polyurethane foam insulation and factory-installed heat trap nipples for maximum efficiency and energy savings
Features easy temperature control with adjustable thermostat you can set higher or lower for dishwashers and laundry machines
Factory-installed temperature and pressure relief valve and tamper-proof drain valve ensures safe operation
Provides peace of mind with a 6-year limited tank and parts guarantee and a 1-year limited labor warranty

General
Type	Tank	Use Location	Indoor
Grade	Residential	Series Name	Signature 100
Power Source	Electric

Dimensions
Nominal Capacity (Gallons)	28	Weight (lbs.)	90
Rated Storage Capacity	26-Gallon	Width (Inches)	20
Depth (Inches)	20	Family Size	2
Diameter (Inches)	20	Water Connection Size	3/4-in
Height (Inches)	30	Insulation Thickness (Inches)	1

Features
Hybrid Heat Pump Technology	No	Voltage (Volts)	240
Point of Use	No	Foam Insulation	Yes
Annual Fuel Utilization Efficiency % (Percentage)	0	GPH Recovery at 90 Degrees F (Gallons)	20.7
Uniform Energy Factor	0.89	Installation Location	N/A (Portable)
Super High Efficiency	No	Temperature and Pressure Relief Valve	Yes
Grid Capable	No	Water Connection Location	Top
Scale Prevention	No	Water Heater Style	Lowboy

Compatibility
For Use with RVs	No	Works with Android	No
Works with Apple HomeKit	No	Wi-Fi Compatibility	No
For Use with Mobile Homes	Yes	Works with the Google Assistant	No
Works with SmartThings	No	Bluetooth Compatibility	No
Works with Amazon Alexa	No	Smart Compatible	No
Works with iOS	No

Warranty
Warranty	6-year limited

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	AHRI Certified	Yes
ENERGY STAR Certified	No	Safety Listing	CSA safety listing

Miscellaneous
UNSPSC	40101800

Check out the Best Selling Water Heaters on Lowes.com

Review

4.4 out of 5

911 Reviews

87% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 36

What Customers Are Saying

Customers consistently praise the water heater for delivering ample, reliable hot water within minutes of startup, with many highlighting its compact low-boy design that fits tight spaces like crawl spaces and mobile homes. Installation is frequently described as straightforward and simple, with included pipe insulation and blanket appreciated as value-added features. Most find it an excellent replacement for older units. However, a small number report serious defects including tank failures within months and dents upon arrival, raising durability concerns for some customers.

Customer review summary generated by AI, including incentivized reviews.

911 Customer Reviews

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Would Recommend

Easy to install. Lots of hot water for size.

willard373September 27, 2026
Verified Purchaser

Was this Review Helpful ?

This was a purchase not a return as it is listed

Would Not Recommend

Not a Return. I had a separate warranty issue

SamSeptember 24, 2026
From Signature 100 38-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket

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Last four years

Would Not Recommend

If there is extended warranty, I encourage it.

SamSeptember 23, 2026
From Signature 100 38-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket

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Response from Published by the A. O. Smith Team

We are sorry to hear of your experience.

We recommend reaching out to Lowe's Customer Care at 1-800-445-6937 or Text 84109.
Read More

Published by the A. O. Smith TeamSeptember 24, 2026

Easy install, looks good.

Easy install and heated up right away. My plumber couldn't believe how quiet it was!

PaliViewSeptember 20, 2026
From Signature 100 38-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket Verified Purchaser

Was this Review Helpful ?

Works like it's supposed to.

Would Recommend

Works like it's supposed to.

MarDavSeptember 19, 2026
From Signature 100 38-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket Verified Purchaser

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Would Recommend

Lowe’s associate were great

NoneSeptember 18, 2026
Verified Purchaser

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Would Recommend

I bought the hot water heater two weeks ago and everything has been working fine. Pretty easy for a DIY to install. Six year warranty, hopefully I won’t need it.

September 15, 2026
From Signature 100 38-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/1c4060df-308d-5c66-8a44-d06eab57085a

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