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Signature 100 28-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket

Ratings & Reviews for A.O. Smith Signature 100 28-Gallons Lowboy 6-year Warranty 4500-Watt Double Element Electric Water Heater with Insulation Blanket

4.3
96
Review
 4.3 out of 5
96 Reviews


84% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise the compact lowboy design and side-mounted connections, highlighting ease of installation in tight spaces like crawl spaces and under-counter areas. Most report fast heating and reliable hot water supply sufficient for daily use without running out. However, some experience drain valve leaks and persistent water odor issues. A few note problematic valve placement complicating installation and report unit failures within months. Despite these concerns, the vast majority remain satisfied with core functionality and space-saving design.

Customer review summary generated by AI, including incentivized reviews.
96 Customer Reviews

No hot water, keeps tripping

Would Not Recommend

Purchased this lowboy due to tight space. Now the heater keeps shutting off, leaving me with no hot water until I hit the reset button. Purchased at Lowe’s but now I read: Do not Return to the store where purchased. How inconvenient.

May 3, 2021
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Response from Published by the A. O. Smith Team

A tripping reset on a new heater is likely due to an element which has been dry fired, and is grounded. The element can be replaced to resolve the is... Read More

Published by the A. O. Smith TeamMay 3, 2021

Works like it should.

Would Recommend

Bought it as I did not need a large one and could use extra storage space

February 25, 2021

From aosmith.com

Too small even for one person

Would Not Recommend

I couldn't get one shower out of this heater and I have a low flow shower head. It is only 120volt so it takes a long time to heat up after I shower. It is probably good for a laundry and hand washing. Not good for a whole house

February 6, 2021
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Response from Published by the A. O. Smith Team

This heater is rated for 240-volts. Operating this unit on 120-volts will result in poor operation and decreased recovery. With a fully heated tank... Read More

Published by the A. O. Smith TeamFebruary 9, 2021

28 Gallon Water Heater

Would Recommend

It cost me me more to have it installed than the cost of the unit. Unit is doing great this far. It's been in for a couple of weeks.

August 21, 2020
Verified Purchaser
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DOES NOT WORK

Would Not Recommend

DOES NOT WORK, AND LOWES DOES NOT CARE.

August 6, 2020
Verified Purchaser
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Response from Published by the A. O. Smith Team

We’d like to hear more about the situation you describe in your review of our water heater so that we can help. Please send your number to talktous@... Read More

Published by the A. O. Smith TeamAugust 6, 2020

So far working excellent , the install was a good

Would Recommend

Great water heater attractive finish and I get hot water real quick

July 30, 2020

From aosmith.com

Just What I Needed

Would Recommend

I bought this Low Boy electric water heater because I needed more hot water for my new walk-in tub. I also needed it to be short in height because I put it in a crawl space right below the new tub. I put it "in-line" with the hot water lead from my existing gas 45 gallon water heater. Now I have instant hot water in my bathroom (do not waste water waiting for the hot water to travel through pipes) and I have plenty of hot water for the walk-in tub. It would have been much more expensive to u...

July 14, 2020

From aosmith.com

Informed Consumer - Wish i Knew

Would Recommend

Just purchased Proline b/c I was in a pinch (from a wholesale plumbing supply chain). This is the exact same water heater offered by Lowes (called signature series). Lowes price $349. ***** Plumbing supply chain $690 with tax. Plumbing supply chain will not tell you the difference b/c "we don't sell the signature series" and the 18yr old at Lowes didn't know. Spoke with AO Smith customer service (very helpful). The two differences. 1) Proline has a brass drain line, signature series has a...

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Practically instant hot water

Would Recommend

Our kitchen is at the opposite end of the house from where the main water heater is located, which resulted in a long wait for hot water and also a lot of wasted water. We installed this 28 gal. unit very near to the sink and the dishwasher. Now it takes about 3 seconds for hot water at the tap. Problem solved.

April 4, 2020

From aosmith.com

Water tank

Would Recommend

1 st one leaked as soon as installation was complete. We received a big hassel when we returned it to the store within the hour. The 2nd purchase was fine.

February 17, 2020

From aosmith.com

Water heater

We installed this right before Christmas. It’s working fine so far. My main complaint is the bottom connector is plastic instead of brass. This is the same brand as our previous water heater that was 30 years old. We hope this one lasts just as long. We were very limited in our choices because of the height of our crawl space. Really wish their were more options on short water heaters.

January 17, 2020

From aosmith.com

Fits under stairs

Would Recommend

Bought this for a guest cottage where we do our laundry. Just connected it an am waiting for the first hot water. Talk to me in a week for a review.

October 29, 2019

From aosmith.com

Water heater

Would Recommend

Seems to be a quality water heater. Short and squatty to fit in tight space. Side connections help a lot.

October 24, 2019
Verified PurchaserSweepstakes
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second one

Would Recommend

First one lasted 14 years. Worked fine. Never had a problem. Easy install. Price is right. Happy with it.

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As promised

This was an easy to install water heater in the closet of my condo. If it holds up well, I will be very pleased. I plan to replace the anode rod in 5 years in order to prolongs its usable lifespan.

May 25, 2019

From aosmith.com

Thermostat Wiring Shorted in less than 72 hours!

Would Not Recommend

I bought and had this water heater installed on Jan 2 2019, and it quit working on the 5th, due to what was determined to be faulty wiring in the thermostat. I called the warranty number and was offered a replacement heater and $100 dollars to have it re-installed. Considering that this is roughly 1/10th of what I have been charged in labor so far, (still awaiting an invoice from electrician to ensure it wasn't faulty wiring) I am very unsatisfied. I work in customer service and honestly couldn'...

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Great fitting water heater

Would Recommend

Water heater fits great for limited space and works like a charm!

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