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A.O. Smith Signature 100 2.5-Gallon Compact 6-year Warranty 1440-Watt 1 Element Point Of Use Electric Water Heater

Name: A.O. Smith Signature 100 2.5-Gallon Compact 6-year Warranty 1440-Watt 1 Element Point Of Use Electric Water Heater
Brand: A.O. Smith
SKU: 1000216745
Price: 219 USD
Availability: InStock
Rating: 4 (122 reviews)

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Get the hot water you need for specialized applications and small spaces with this A. O. Smith Signature 100 Series Point of Use 2.5-gallon electric water heater. Our space-saving design comes with a wall mount bracket for easy installation making this under-the-counter water heater great for use in garages and workshops and underneath sinks. Designed to last, this model features a single stainless steel heating element, protective anode rod and fused ceramic tank shield built to reduce tank corrosion. For added peace of mind, this unit comes with a 6-year limited warranty. Not sure if this is the right water heater for you? Use our product selector tool to see if this model is the right fit for your hot water needs. Call 1-877-GOLowes to get this water heater installed.

Delivers the ideal amount of hot water for specialized applications and small capacity needs.
Features one stainless steel 1440-watt water heater element that provides 7 gallons per hour at a recovery rate at 90 degrees Fahrenheit.
Compact 14.5-in H x 11.75-in W x 10.38-in D design allows for easy installation under counters or vanities and inside cabinets.
Includes wall mount bracket for simple installation
Provides superior tank protection and extends water heater life with premium heating element, anode rod and fused ceramic tank shield
Reduces heat loss with non-CFC polyurethane foam insulation for maximum efficiency and energy savings
Features easy temperature control with adjustable thermostat for desired comfort
Factory-installed temperature and pressure relief valve and tamper-proof drain valve ensure 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)	2.5	Weight (lbs.)	20
Rated Storage Capacity	Not applicable	Width (Inches)	10.38
Depth (Inches)	10.38	Family Size	1
Diameter (Inches)	11.75	Water Connection Size	1/2-in
Height (Inches)	14.5	Insulation Thickness (Inches)	1

Features
Hybrid Heat Pump Technology	No	Foam Insulation	Yes
Point of Use	Yes	GPH Recovery at 90 Degrees F (Gallons)	7
Annual Fuel Utilization Efficiency % (Percentage)	0	Installation Location	N/A (Portable)
Uniform Energy Factor	Not applicable	Temperature and Pressure Relief Valve	Yes
Super High Efficiency	No	Water Connection Location	Top
Grid Capable	No	Water Heater Style	Mini tank
Scale Prevention	No	Wattage (Watts)	1440
Voltage (Volts)	120

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	No
ENERGY STAR Certified	No	Safety Listing	UL safety listing

Miscellaneous
UNSPSC	40101800

Check out the Best Selling Water Heaters on Lowes.com

Review

4 out of 5

122 Reviews

70% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

What Customers Are Saying

The point-of-use water heater provides instant hot water and has a compact size, but some users experienced issues with the heater's durability and reliability, including it suddenly stopping working or producing rusty water. The overall quality and performance seem to be mixed, with the product working well for some but having concerning problems for others.

Customer review summary generated by AI, including incentivized reviews.

122 Customer Reviews

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Disappointed

Purchased this heater one year ago. Easy to install and works great. I read you were to replace heating element every year. Well I purchased a universal heating element at Lowe's and it wasn't even beginning to be the proper one. We have a water softener so element looked good so I put it back together. WHAT A PAIN. It is mow leaking out the bottom and relief valve won't completely shut off. Did I mention pain when putting back together. I'll probably purchase another one as it works great in ...

RandyJuly 7, 2026

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Response from Published by the A. O. Smith Team

We are sorry to hear of your experience. We want to ensure the issue is resolved.

Please send your phone number to talktous@aosmith.co... Read More

Published by the A. O. Smith TeamJuly 8, 2026

Personal Hot Water

Would Recommend

Nothing to dislike. Fit perfectly under vanity.

StewnewMay 22, 2026
Verified Purchaser

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Hot Water......maybe!?

Would Recommend

The tank is great, short cord! Don't buy the installation kit for $40 dollars, it's not what you need anyway! I put this under a utility sink with a dual faucet. You need a "T" valve 3/8" to get water into the tank and to the faucet. The "kit' did not have this "T" valve, so on my 3rd trip to Lowes, I was able to get what I needed for the installation. Yes, all products had been moved in my local Lowes store! Yes, I still have to return the installation "kit" that was recommended for this produc...

MarkDMay 12, 2026
Verified Purchaser

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Great for garage bathroom.

Would Recommend

Bathroom project

AngeMay 8, 2026
Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/32403596-cddb-528e-9d72-29afe848079f

Was this Review Helpful ?

Perfect for under the sink.

Would Recommend

Small size, excellent hot water, comes with the hardware to mount it to the wall. Very easy to install.

JCorbinMay 3, 2026
Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/70bfe41f-5238-5e9a-b27a-6218bd6e5b41

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Decided to install under my kitchen sink due to ta

Would Recommend

Easy install

Wwilson20April 24, 2026
Verified Purchaser

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