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AO Smith Water Heater Reviews: Which is the Best to Buy [Top 10 in 2021]

ao smith water heater reviews

One company that has been leading the water heater market since years is A.O. Smith. Known for delivering high-grade products engineered using best technologies and catering to the requirements of modern consumers, the water heaters by A.O. Smith always outperform their competitors.

A.O. Smith offers a comprehensive range of water heaters including electric, tankless, gas, and solar. So, no matter what your personal preference is, you will always find a water heater with ease.

In this post, we have listed AO Smith Water Heater Reviews for A.O. Smith’s top water heater models along with all important details that you want to know about this company and its product range.

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A.O. Smith has earned success and reputation over the years by delivering reliable and efficient services by always keeping their customers at prime importance.

The company was founded in 1874 by Charles Jeremiah Smith as a hardware solution shop managed by a single-person. The small business expanded fast including three sons and was renowned for manufacturing high-quality metal components used in baby carriages.

Arthur Oliver Smith was the third son to join the company, who took this venture to sky-scrapping heights by developing a lightweight steel frame for vehicles. This grabbed attention of leading automobile companies like Cadillac and Ford.

This innovation by Arthur was a marvel to the industry and soon the first automated frame production line was introduced in 1921 by son of Arthur, Lloyd Raymond.

Then in 1936, A.O. Smith engineers introduced a unique method for incorporating glass linings to residential water heaters. One after the other, there were advancements in water heater design, which led to company’s expansion in China, Europe, and Canada.

The automotive branch was sold by the company in 1997 along with its electric motor branch in 20111. As a result, the company was established as a major water treatment and heater company, becoming a global pioneer.

The glorious success of the company is 150 years old, which still exists!

10 Best AO Smith Water Heater Reviews

To make the buying process simpler for you, here we list the 10 best A.O. Smith water heaters.

 Best Gas Water Heaters

1. A.O. Smith Signature Premier 50-Gallon Short 6-Year Limited Natural Gas Water Heater

This gas water heater by A.O. Smith is an excellent product with high energy efficiency and certified star rating. It offers through the roof and wall venting. The vent pipe comes in ABS, CPVC, or PVC form with a vent diameter of 2, 3, or 4 inches.

It is equipped with self-diagnostic gas control mechanism and LED status indicator, which makes it easy to monitor the current operational status of the heater.


Different vent pipes available as CPVC, ABS or PVC
Self-diagnostic electronic gas control
LED status indicator
Self-cleaning tube
Energy star certification
49 gallon rated storage capacity
Weighs 198lbs
Low NOx emission rating
40000 BTU rating


Offers wall and roof venting
Easy installation
Supplies hot water without leaks
Comes with gas control valve
Highly energy efficient
Comes with an installation guide


The gas valve may become loose after years of use
You need professional assistance for installation

Bottom Line

It is an excellent natural gas water heater that can save you huge electricity bills. The built is superb and only high-quality components are used for construction. Installing this water heater is easy and you avail of continuous hot water supply without ever experiencing leaks.

2. A.O. Smith GCR-50 ProMax Plus High-Efficiency Gas Water Heater, 50 Gallons


This is a premium model designed with the best-quality components and ensures gas fuel is utilized in the most efficient manner. It comes with high recovery level and is a perfect solution for bigger families with continuous demand of hot water supply.

The compact and sleek design offers easy installation at any space as it can vent up to 40 feet. The model is equipped with two-pipe combustion systems that draw clean air eliminating issues related with indoor ventilation.


Weighs 180 pounds
Storage tank 50 gallons
Blue diamond glass coating
Self-powered electrical gas valve uses thermopile
Internal microprocessor
Tighter differentials
Dynaclean diffuser dip tube
PEX cross-linked polymer
Based on regulations by the National Appliance Energy Conservation Act


Holding great resistance to corrosion
Equipped with industry-grade glass lining
Generates self-power
Enhanced operating mechanism
Precise and faster heating response
Reduce dirt buildup maximizing hot water output


It does not come with LED display monitoring.

Bottom Line

This water heater caters to the needs of big families. It holds excellent resistance to corrosion and generates the power required to operate without any external power support.

It offers enhanced and precise operating mechanism and reduces sediment and lime buildup. Made using industry-grade materials ensure you never experience any problem.

3. A.O. Smith Signature 40-Gallon Short 6-Year Limited Natural Gas Water Heater

With self-diagnostic gas control mechanism and LED display indicator, this A.O. Smith gas water heater will never disappoint you in terms of efficiency and performance. It comes with advanced safety technology that alleviates risks of accidental fires or short circuits. While the push button ignition system offers quick start, the pressure relief valve and factory induced temperature serves safe operation.


Rated Storage Capacity 38 Gallon
Weight 146lbs
Atmospheric venting type
40000 BTU rating
Factory installed temperature
Certified for high altitude up to 10,100ft
Push button ignition
LED indicator
Self-diagnostic control


Starts immediately without consuming much power
Perfect for family of 3-4 people
Alleviates all sorts of accidental risks
Reports system operational status
Convenient installation
Well-build design
Self-monitoring water heater


May produce extremely hot water at a higher setting

Bottom Line

It is a great product that can be easily installed. You can adjust water temperature requirements ensuring consistently warm water. It is a perfect, family-size product designed with premium-grade components leading to high efficiency and longer service life. With professional assistance, you can install it at a higher altitude and avail of adequate service.

Best Electric Water Heaters

1. A.O. Smith Signature Premier 50-Gallon Short 12-Year Limited 5500-Watt Double Element Electric Water Heater

This electric water heater ideally optimizes hot water output with 3-4 members. It is equipped with two 5,500 watts stainless steel heating elements and an electronic interface offering you the ease to operate this unit in three different modes.

With self-diagnostic controls, making selections is easy and quick. The unique Energy Smart Mode ensures there is no heat loss when the unit is at standby.

The water tank is shielded with fused ceramic imparting resistance to corrosion, and hence, delivering longer service life.


Signature Premier Electronic Display
0.95 Energy Factor
Touchscreen display
Numerous operating modes
Dry fire protection
Diagnostic feedback
Factory installed temperature
Pressure Relief Valve
Tamper-proof valve
Incorporates DynaClean system


Maximizes savings on operating expenditures
One of the most efficient models
Save money using your preferred saving mode
Offer protection from accidental fire
Offers a way to drain water
Requires less maintenance
Reduces energy-robbing sediment buildup


The quality control could have been better.

Bottom Line

It is one of the best electric water heaters by A.O. Smith that is incorporated with numerous advanced features. This heater not only serves exceptional performance but also lets you save huge on utility bills.

It is easy to install, maintain, and the internal components hold resistance to corrosion and damage. With top-grade features and premium quality engineering, it is a true value for money.

2. A.O. Smith PXNS-50 Conservationist Short Electric Water Heater, 50 Gallon

This line of electric water heater is an energy-efficient model that will always impress you with its superior performance and exceptional build. It comes with Phoenix heating elements on lower and upper ends, which lasts three times longer than usual copper elements.

The Blue Diamond glass coating imparts great resistance to corrosion to the entire body. It comes with unique Dynaclean II technology, which is specially designed to generate turbulence in the tank.


Blue Diamond glass coating
Specially designed Dip Tube
Phoenix low-watt density Incoloy steel upper
CoreGrad anode rod
Lasts longer
Tamper-resistant relief valve’
Energy star rating
Weighs 176 pounds


Reduces sediment and lime buildup
Operates efficiently
Resistance to corrosion
Offers great durability
Comes with different operational modes


It does not come with accidental fires.

Bottom Line

It is a great product for those who expect high output and lower utility bills. It is a well-engineered model designed to last up to 3 times longer. While the tank holds great resistance to corrosion, the relief valve is tamper resistant and highly durable.

3. A.O. Smith Signature 50-Gallon Tall 6-Year Limited 4500-Watt Double Element Electric Water Heater

The Signature Select electric water heater is a wonderful choice that maximizes hot eater output. It is designed using environment – friendly insulation and reduces heat loss during standby. With factory-installed temperature and a pressure relief valve, it offers smooth operation.

The tamper-proof nylon drain valve prevents undesirable water discharge and offers a way to drain water from heater. The water tank is surrounded by a strong layer of non-CFC polyurethane foam that traps heat within and saves energy.


Top mounted junction box
PEX polymer dip tube
T&P valve allows tank to relieve pressure during thermal expansion
Double heating elements
Glass lining
Self-cleaning dip tube
Nylon drain valve


Convenient installation
Foam insulation keeps heat intact
Enhanced efficiency
Certified with U.S. Department of Energy thermal efficiency


Requires time to initially heat water.
Does not come with protection against fire accidents.

Bottom Line

It is a sleek design heater offering easy installation. The tank as well as the body comes with anti-corrosion protection. This unit perfectly optimizes hot water supply and comes with adjustable thermostat offering complete comfort. Presence of top-grade materials and components make it a world-class engineered product.

Best Tankless Water Heaters

1. A.O. Smith ATI-540H-N Condensing Residential/Light Commercial Tankless Heater

This A.O. Smith water heater is an excellent product fit for light commercial and residential use. With a high indoor capacity of 13,000 BTU, it inputs excellent power and ensures that you receive consistently hot water supply. The water heater is a tankless design that means it requires less space for storage. At the same time it frees you from worries related to tank leaks.


AFR sensor or Air-Fuel Ratio
Water temperature comes with safety control
Inbuilt efficient exhaust mechanism with regulation control
Fuse for overheat cut off
Pipe vents of 4inches up to 50 equivalent feet
Pipe vents of 3 inches up to 25 equivalent feet


Compact and sleek design
Water temperature and exhaust safety control
Cutoff fuse that saves power
Different sizes of vent pipes
Weighs 59 pounds
Low energy bills


It may need professional assistance for installation.

Bottom Line

It is a sleek design heater offering easy installation. The tank, as well as the body coIt, is a sleek and compact design engineered using premium-grade materials.

The tankless functionality ensures there is no heat or electricity loss to warm bulk water. It may not hold resistance to corrosion but the build is definitely leak proof. For this reason, you can expect longer service life at an affordable price.

2. AO Smith ATI-340H-N 8 GPM Residential/Commercial Condensing Natural Gas Indoor Tankless Water Heater with 180000 Maximum BTU Input

Using this tankless water heater by A.O. Smith will ensure you never run out of hot water. It operates at a steady pace of 8 GPM. The compact design allows convenient mounting to the wall, offering you a low-profile installation.

It is equipped with factory-grade power cord and temperature controller which are compatible with category IV or III power direct venting in 4 inches and 3 inches. It is one of the finest tankless water heaters available with commercial-grade components.


8 GPM flow rate
Factory installed power cord
Compatible with vent of varying sizes
Electronic ignition
Overheat cutoff fuse
Regular temperature monitoring
Air fuel ratio rod
Robust heat exchanger
Commercial grade copper engineering


Built-in temperature controller
Lead-free standards
Equipped with multiple safety features
Common venting up to 8 units
Fast heat transfer and resistance to corrosion
BTU Input 180000


It may not serve bigger families.

Bottom Line

Equipped with numerous advanced functionalities and safety features, this A.O. Smith water heater is one of the best deals. The precise engineering made using top-notch materials ensures you gain absolute convenience and longer service life while using this heater.

Though it serves multiple benefits like temperature control, LED display monitor, regular hot water supply, and more, but it may not be able to serve promptly if you are a family of more than 4 members.

3. AO Smith ATI-310N Non-Condensing Residential/Light Commercial Tankless Heater

Rendering a BTU of 11,000 and a maximum GPM of 8.0, this A.O. Smith water heater is a perfect solution for light commercial and non-condensing residential requirements.

This tankless water heater is a sleek and clean design that comes with exhaust mechanism to prevent accidental hazards due to overheat. It is a unique design with built-in freeze protection and warms water at a constant temperature.


Equipped with freeze protection
Cutoff fuse in case of overheat
Outlet and inlet thermistors for regularly monitor temperature
Warms water up to 194 Degree Fahrenheit
Engineered using industrial-grade materials
Weighs 38 pounds


Easy to use and install
Quick heat mechanism
Does not waste water usage with overheat
Consistently supplies hot water


It does not come with LED display monitor.
You have to manually set the water temperature.

Bottom Line

If you are looking for a good product delivering great performance and complete affordability, you can go with this water heater. It is not equipped with advanced features, but will definitely meet most of your requirements with ease.

Installing and using this water heater is simple as there are no intricate adjustments to be done. The only thing is that it may not deliver you absolute comfort in terms of temperature control and monitoring.

Best Solar Water Heater

10. AO Smith SUN-120 Residential Solar Water Heater

The SUN-120 Solar Booster water heater is from the line of solar water heaters by A.O. Smith. Designed exclusively for residential use and light commercial applications it utilizes solar energy for heating water.

As a result, you will never have to worry about your utility bills. It is among a few solar water heaters equipped with advanced features such as Dynaclean diffuser dip tube, sop and side connections, and PermaGlas Glass Tank Coating.


120 Gallon Water Storage Tank
Top and Side Connections
Closed and Open Loop Systems
Dynaclean Diffuser Dip Tube
Low-Watt Density Heating Element
Prolong Element Life
PermaGlas Glass Tank Coating
Uses External Heat Exchanger


Reduces dust and lime buildup
Heating elements consumes less watts
Maximizes hot water output
Spreads wattage over bigger surface area
Resistance to rust and corrosion maximizes tank life


It may not heat water to extreme temperature.
Slightly heavy as it weighs 351 pounds.

Bottom Line

This solar water heater is a great product for those who want to save on electricity bills and are comfortable using constantly warm water supply. It reduces heating costs by as much as 70% and is a great choice for those on tighter budgets.

This water heater is a heavyweight product, and hence, requires professional installation. Also, it does not come with advanced technologies and features. It is but a great solution to combat hefty utility bills.

Why Choose A.O. Smith Water Heaters?

The A.O. Smith water heaters excel others in the market because of various factors. The prominent reasons to why you must choose A.O. Smith hot water heaters are:

  • The company engineers its water heaters using industrial-grade components and top-quality materials.
  • All water heaters use glass-lined technology. The company is the first one to patent this technology in 2004 and has named as a Blue Diamond glass coating. Because of this technology, the A.O. Smith water heaters hold twice resistance to corrosion and rust than traditional heating liners.
  • Most of its water heaters are Energy Star-rated meaning they consume less energy, and hence, can help you reduce the heating bills to a great extent. If you want a product with excellent performance and high energy-efficiency, these water heaters can serve you in the best manner.
  • The recently manufactured water heaters by A.O. Smith are equipped with the latest technology such as iCOMM app. It is an explicitly designed app for commercial water heaters, allowing the users to monitor their units remotely. It has served as an excellent solution to property managers.
  • A.O. Smith proudly states that their propane and gas-powered water heaters are rated ultra-low or low NOx. It means that they emit very minimal amount of nitrous oxide, which helps in combating the greenhouse effect.

Types of A.O. Smith Hot Water Heaters

A.O. Smith offers a wide range of water heaters.

1. Gas Water Heaters

A.O. Smith offers gas and propane heaters in a wide range. Their heaters are categorized into three Proline tiers.

Why they stand out?

The gas and propane water heaters by A.O. Smith are known for their unmatched efficiency and high-grade quality. All their gas water heaters are marked with LEED ratings and are energy start certified. All models in this range are proven to deliver ultra-low or low NOx emissions and come with 4 distinct options.

Different Lines of A.O. Smith Gas Water Heaters

  • Polaris

The Polaris gas water heaters by A.O. Smith are ideal for those who want uninterrupted supply of hot water. This range comes with high energy efficiency with great recovery rate and ultra- low noise operation.

  • ProLine Master and ProLine

The water heaters featured in this range are designed for permanent and mobile use within residents. They come with high recovery and 80% energy efficiency ratings.

Some of the models deliver even higher efficiency rating than this. All models in this range are certified for exceptional performance and are categorized under an exclusive category, the ProLine XE.

  • Signature

This line of A.O. Smith water heater consists of numerous Signature Premier and Signature Select water heaters designed exclusively for residential use. Though they do not hold the highest energy efficiency, but offer the best value for money.

  • Vertex

The entire line of Vertex gas water heater is an Energy Star product featuring high thermal efficiency and exceptional recovery rates.

2. Electric Water Heaters

The electric water heaters by A.O. Smith are powered electrically. The best thing about these heaters is that they are engineered using environment-friendly components and comes with LEED certification. They draw a specific power from the electrical outlet and require smaller space for installation.

Why they stand out?

In comparison to other models, the electric water heaters deliver higher efficiency. They offer small point-of-use and can fit well into compact spaces.

Different Lines of A.O. Smith Electric Water Heaters

  • ProLine and ProLine Master

This is the lowest Tier of electric water heater, which is almost the same as the ProLine range of gas water heaters. The models in this range deliver above-average efficiency. They are available in various sizes with the smallest tanks holding capability to hold a few gallons of water.

  • ProLine XE

The water heaters in this range feature ultra-high efficiency and digital display. They come in mid-size tanks and are ideal for single-family or apartments.

  • Signature

The water heater models in the Signature series is sold at Lowes as of 2017. These water heaters are great for those who want great durability and high-efficiency from their product.

  • Voltex

These water heaters are quite similar to the Vertex line of gas water heaters. They are compliant with energy start and come in an appealing hybrid design. The unique hybrid design doubles the dehumidifier, extracting excess moisture from the air to reduce utility bills and water requirements.

3. Tankless Water Heaters

A.O. Smith offers a wide range of tankless water heaters, which are available for propane and gas usage. These models feature ultra-low or low NOx thereby leading to enhanced environmental safety.

Why they stand out?

Tankless water heaters are in high demand as they need very less space for installation. They offer hot water supply on-demand and come with remote control operation and digital displays.

Different Lines of A.O. Smith Tankless Water Heaters

  • Propane and Gas

Most of the models in this line feature non-hybrid technology and come with LEED and Energy-star certifications. They are rated as ultra-low NOx and are greatly efficient.

  • Propane / Hybrid

These water heaters are fueled by propane or gas. These are efficient models with an extensive range of domestic systems. They offer high levels of efficiency and are non-condensing.

4. Solar Water Heaters

The solar water heaters by A.O. Smith are available under the line Cirrex Solar system. These water heaters are highly efficient and excellent for the environment.

Why they stand out?

 These water heaters come with OG-300 certification ensuring they are eligible federal rebates and breaks in various states. Moreover, they reduce heating expenses by 70%, and hence, are perfect for those who have a tight budget.

Benefits of Buying A.O. Smith Water Heaters

Buying A.O. Smith water heaters is considered a wise choice because all of its products offer multiple benefits such as:

  • The company is dedicated to manufacturing eco-friendly units.
  • Most of its water heaters are energy efficient and need lesser resources to heat water. Even, their manufacturing plant in China recycles 80% of water used during the development process.
  • The products developed by the company are of high-quality, and hence, last longer.
  • These water heaters hold high resistance to corrosion and rust.
  • These models do not clog up sediments or dust, and hence, provide maximum hot water output.
  • The newly introduced iCOMM app can be used to gain control over your water heater even when you are at a distance.
  • Buying A.O. Smith hot water heaters can save you a lot of energy and time! These water heaters utilize 1/4th power of the heating system and make sure you gain consistent hot water supply at low prices.
  • With numerous safety and advanced mechanisms introduced, these water heaters are able to serve numerous purposes at once.
  • These water heaters are highly affordable and do not involve any complex installation.
  • Since, these water heaters are integrated with the best-quality components and elements, so there is reduced down ProMaxtime of repair and maintenance. 
  • The extensive product range of gas, tankless, electric, and solar water heaters lets you make a preferred choice.

Buying Guide for A.O. Smith Water Heaters

A water heater is a long-term investment. You must therefore select a model that precisely meet your requirements and can serve you longer. Some of the important factors to take into account are:

  1. Check Space Available with You

Water heaters come in different dimensions. If you want to buy a big water heater, you must have enough space for its installation.

There are a few water heaters that require proper surrounding air. You must check proper cubic square footage requirements before buying a heater.

  1. Energy-Efficiency

Pick a fuel source, which is more affordable. For example, natural or propane gas water heaters involve less operational cost in comparison to electric water heaters. However, they may not offer quick heating mechanism.

Tankless or solar water heaters are other energy-efficient options available. So, pick a fuel source as per your choice and a model as per energy efficiency ratings.

  1. Consider Electrical Fittings

While electric water heaters need electricity for running, the gas water heaters need standard 115-volt for ignition system. Electric tankless water heaters require 240-volt service and a line dedicated to sufficiently handle the present draw.

  1. Consider Venting Options

Gas water heaters are vented outside the house. Also, when you replace gas water heater with a new one, you have to alter the place from last installation. Hence, check the best venting option. For this, you can hire a professional plumber that can perform venting quickly and safely.

  1. Understanding Hybrid Water Heaters

Such water heaters gather heat from air and then use it to heat water. For this reason, they use 60% less energy than traditional water heaters. Though they are quite expensive initially, the associated energy cost can save you a lot.

But hybrid water heaters are ideal for colder places or regions with temperature range from 40 to 90 Degrees Fahrenheit. For installation such units, you want a clearance of around 7 feet to the ceiling from floor. This will accommodate your heat pump.

  1. Hot Water Storage Tank

It is essential that your water heater serves your entire family. For this, you have to pick one that has an appropriate hot water storage tank capacity. A 50-gallon hot water supplies enough hot water needed for a family of 4 members. In case you wish to pick tankless water heater, take into account the family needs as well as climate.

  1. First Hour Rating

It is a rating based on hot water stored in the tank compared to incoming cold water, which can be heated in one hour. A heater with higher first hour rating results in more hot water supply during peak use.

  1. High Recovery Rate

This rate is related to how fast the water heater can generate hot water once the initial supply has reduced. A low rate of recovery means who have to wait longer for the heater to heat up the water.

  1. Low NOx

Every water heater generates nitrogen oxide while heating the water. Water heaters with low or ultra-low NOx are the best as they are proven to release less amount of nitrogen oxide. This is a good thing for your health and the environment.

  1. Flow Rate

It refers to the number of gallons of hot water in one minute. Heaters with higher flow rate are beneficial.

  1. Warranty

You must select a water heater with a minimum 6-year warranty. With A.O. Smith hot water heaters, the warranty is available for up to 10 to 15 years for their parts.

A.O. Smith Water Heater Installation

It is very easy to install A.O. Smith water heater. Just make sure you always hire a professional to get the job done. In case you don’t have easy access, you can simply visit the company’s website and register your purchase and model.

A professional from the company will soon visit you and offer you with the perfect installation. Also, if you have any doubts regarding the product, you can ask the professional and gain absolute peace of mind.

A.O. Smith Water Heater Maintenance

All water heaters engineered by A.O. Smith are known for holding a strong market reputation in terms of durability, build, and quality of components. They usually do not show the standard problems occurring in other water heaters.

Most of their units last longer without leading to any problem for at least 10 years. By regularly maintaining your water heater and availing of professional service in time of need, you can extend the product lifespan to a great extent.


The price of buying A.O. Smith water heater can vary drastically based on the type of model you choose and the installation technique. You must always get your water heater installed by a professional to avail of proper plumbing and electrical units.

The cost of installation may also vary depending on the kind of water heater you purchase and the intricacy of venting needed. Usually, electric water heaters are cheap to install in comparison to water heaters needing tapping or venting into the gas source.

We suggest asking professional assistance while selecting the right heater for your house. Professionals can also offer you with a precise installation bid and absolute peace of mind by doing the job in the right manner.

Most importantly, take into consideration the lifetime cost associated with a water heater. A.O. Smith water heaters may involve higher upfront price but reduced utility bills and longer service life eventually makes you a winner.


Just like other manufacturers in this industry, A.O. Smith offers limited warranty on its product range, depending on the model and style. For example, a 15-year warranty is offered for the heat exchanger of a gas tankless water heater, while the warranty for similar product in an electric water heater is 5 years.

The electric and gas tank-style water heaters come with 6 to 10 years of tank coverage based on the model. It is best to check the specific warranty coverage for your preferred model on the company’s website.

Frequently Asked Questions [FAQs]

Q1. Do all A.O. Smith water heaters come with remote control?

A1. Operating water heater using a remote control is a typical feature of the A.O. Smith water heater models. It displays current inlet and outlet temperature along with error codes and flow rates. Using the remote control you can adjust the outgoing hot water temperature easily.

Q2. Do all A.O. Smith water heaters last long?

A2. A.O. Smith water heaters come with vents and temperature controls with PVC. They are made using high-quality materials and advanced technology ensuring extended lifespan for years.

Q3. What safety features do A.O. Smith water heaters come with?

A3. A.O. Smith water heaters are equipped with advance safety features such as overheat cutoff fuse, flame failure, power failure, temperature monitoring, and internal freeze and Air Fuel Ration sensor. Such safety features ensure you gain absolute convenience while using these heaters.

Q4. Where is the serial number mentioned on A.O. Smith water heater?

A4. The serial number for all A.O. Smith water heaters is mentioned on the product information manual and sticker. It is pasted over the warning labels beside the guide of energy. It is difficult to notice it at a first glance and is quite difficult to read.


A.O. Smith holds a history of leading the market with its innovative technology and well-build products. Though their products are not rated high on websites like Amazon, you can always browse the company’s site to gain complete detail and professional advice.

We consider A.O. Smith as one of the leading companies for water heater as they not only offer a wide product range, but also ensure their products are of the highest quality and all of them are backed with long-term warranty and rich customer support. We hope that our detailed article on AO Smith Water Heater Reviews might have helped you in choosing the best one for yourself.