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Signature 100 40-Gallon Short 6-year Warranty 4500-Watt Double Element Electric Water Heater

Ratings & Reviews for A.O. Smith Signature 100 40-Gallon Short 6-year Warranty 4500-Watt Double Element Electric Water Heater

4.6
518
Review
 4.6 out of 5
518 Reviews


94% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this water heater for reliable performance and quick hot water delivery, often available within minutes or almost instantly. Installation is frequently highlighted as straightforward and easy to follow, even for DIYers, with SharkBite fittings and clear instructions making setup simple. Reviewers consistently describe the unit as well-built with modern aesthetics and a top-mounted T&P valve that improves plumbing convenience. Many customers express strong confidence based on long-term durability and note excellent value. A small number report isolated issues like temperature resets or wiring concerns, but these represent a tiny fraction of feedback. Overall, most customers consider this an excellent, reliable choice.

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

Ok

Would Not Recommend

Ok

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Way too expensive but it does its job.

Would Recommend

The product does its job, it’s sufficient. The cost is absolutely ridiculous.

March 16, 2026
Verified Purchaser
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Second time this water heater was purchased

Would Recommend

Purchased based on experience with the prior unit which was so reliable!

March 11, 2026

From aosmith.com

Replacement after 2+years; under warranty

Would Not Recommend

Water heater replacement after only 2+ years from first installation. Replacement unit not giving hot water after 10 minutes of use in next room

March 9, 2026

From aosmith.com

New tank

Would Recommend

Good so far

March 8, 2026
Verified Purchaser
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My plumber suggested this one

Would Recommend

I bought this about a week ago. I have not had any problems so far.

March 5, 2026

From aosmith.com

Works good

Would Recommend

So far, so good. I had the same model previously but it went bad after 6 years; I year after warranty expired. Leaked all inside closet. Hoping this one lasts a little longer.

February 21, 2026

From aosmith.com

Electric water heater works great-energy efficient

Would Recommend

I bought this electric water heater 4 months ago and am happy that it has reduced my electric bill being energy efficient. When I discovered that a water heater is the 2nd most expensive appliance in one's home, I replaced it with this new energy efficient one and it has proved itself on my electric bill the past few months - great buy!

February 21, 2026

From aosmith.com

Fast hot water

Would Recommend

I bought this a couple of weeks ago and it’s been working fine

February 19, 2026

From aosmith.com

Hot water heater

Would Recommend

I bought it in oct. and haven't had any problems so far. Very pleaded

February 17, 2026

From aosmith.com

This is nuts!

Would Recommend

Easy installation, good quality. So far, so good.!!!

February 15, 2026

From aosmith.com

great features

Would Recommend

easy install. wish i did not have to leave review to compete warranty registration.

February 11, 2026

From aosmith.com

would not sell it to me

I found one water heater for a discount for 2 cents and they would not sell it to me. It was in a box not opened or damaged.

February 4, 2026
Verified Purchaser
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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.

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Published by the A. O. Smith TeamFebruary 6, 2026

AO Smith is the best

Would Recommend

These tanks heat quickly and last long

February 3, 2026
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Excellent Product

Would Recommend

I BOUGHT THIS IS FEW WEEKS AGO AND immediately felt the difference, extremely quick heating up the water. Highly recommended.

February 1, 2026

From aosmith.com