Info Center
Trust the water heater experts. For more than 145 years, A. O. Smith has been committed to delivering innovative solutions that bring comfort to your home or business.
When to Repair or Replace a Water Heater?
Learn about diagnosing repairs and learn the signs that it’s time to replace your water heater.
Learn About Residential Gas Water Heaters
Learn About High-Efficiency Condensing Gas Tankless Water Heaters
Engineered to deliver continuous hot water when you need it
Learn About Residential Electric Water Heaters
Learn About Hybrid Heat Pump Water Heaters
A. O. Smith high-efficiency hybrid electric heat pump water heaters have 4x more efficiency using heat pump technology compared to standard tank units.
Know Before You Purchase a Water Heater
Gas vs Electric Water Heaters
In this article, we explore various considerations when choosing a gas vs. electric water heater, including technological advancements that make both solutions more cost-effective than ever.
Tankless vs Tank Water Heaters
While you have plenty of options when choosing a new hot water heater, one of the biggest decisions you need to make is whether to go with a traditional tank heater or opt for a modern, efficient tankless water heater.
How Long Do Water Heaters Last?
In this comprehensive guide, we explore the factors that determine your water heater lifespan, the signs that indicate the end could be near, and how to choose the right installer and system to suit your needs.
What Size Water Heater Is Right for You?
When choosing a new water heater, it's important to get one that’s correctly sized for your needs. This guide's topics include the basic principles of sizing a water heater, the differences between tank and tankless water heaters and selecting the right size water heater.
Why Water Heater Size Matters
Consider what size of water heater is best for your needs. Review the factors you’ll need to weigh before making a decision.
Tankless Water Heater Pros and Cons
Tankless water heaters are a space-saving, energy-efficient alternative to traditional tank water heaters. Understanding how these units operate helps you decide whether a tankless water heater is right for your home.
How Much Does Water Heater Installation Cost?
Explore what factors go into both water heater cost and installation so you have a better idea of what to expect when you need a new unit.
Water Heater Replacement Cost
In this guide, we talk about the different types of A.O. Smith water heaters, water heater costs and factors that influence the total cost of hot water heater replacement.
Tankless Water Heater Cost
If you're wondering about tankless water heater cost or where to purchase a dependable system, read on to discover what you can expect to pay and how to go about choosing a tankless water heater that meets your specific needs.
Water Heater Reviews
A. O. Smith is a leading manufacturer of commercial and residential water heaters. Hear what some of our customers have to say about their products and experiences with us.
How Water Quality Affects Water Heaters
How can the quality of your water affect your water heater? Get tips and more information on water hardness, why it matters, and how to solve it.
How Do Tankless Water Heaters Work?
Compare tankless to traditional water heaters, and the pros and cons of using a tankless water heater in your home.
Uniform Energy Factor (UEF)
The Uniform Energy Factor (UEF) is the Department of Energy’s latest metric for communicating the energy efficiency of residential water heaters.
LEED Certification
Leadership in Energy and Environmental Design (LEED) certification provides independent, third-party verification that a building project meets the highest energy-efficient building and performance measures.
Water Heater Venting
Having the correct venting for your gas water heater is vital to ensure the hot exhaust exits your home.
Tankless vs Tank Water Heaters
While you have plenty of options when choosing a new hot water heater, one of the biggest decisions you need to make is whether to go with a traditional tank heater or opt for a modern, efficient tankless water heater.
LEED Certification
Leadership in Energy and Environmental Design (LEED) certification provides independent, third-party verification that a building project meets the highest energy-efficient building and performance measures.
How Long Do Water Heaters Last?
In this comprehensive guide, we explore the factors that determine your water heater lifespan, the signs that indicate the end could be near, and how to choose the right installer and system to suit your needs.
FOR PROS: Water Heater Installation
Tank Water Heaters and Safety
Discover the innovative design features A. O. Smith engineers use to keep water heaters both functional and safer for everyday use.
Water Heater Venting
Having the correct venting for your gas water heater is vital to ensure the hot exhaust exits your home. Learn what different venting options exist.
Water Heater Installation
Learn what it takes to replace your water heater and why professional help with installation can save you time, frustration and, most of all, money.
Tankless Water Heater Installation
Learn what it takes to replace your water heater with a Tankless and why professional assistance can save you time, frustration, and money.
FOR PROS: Water Heater Maintenance
Water Heater Repair
We recommend calling a professional to perform hot water heater repairs, but you can also do some troubleshooting in case the issue can be resolved by following some basic instructions in your water heater's instruction manual.
Water Heater Pilot Light Keeps Going Out (Won't Stay Lit)
Is it dangerous if the pilot light goes out on a water heater? And what should you do if the pilot goes out?
How to Maintain a Water Heater
Proper preventative maintenance on a water heater can ensure that your unit lasts, saving the hassle and expense of a premature replacement.
How To Turn Water Heater On & Off
Water heaters need a certain amount of periodic maintenance that involves turning the water heater on and off. It also includes flushing the tank to remove sediment, cleaning air filters on gas tank water heaters and checking the protective anode.
How To Drain (Flush) a Water Heater?
Flushing your water heater removes sediment and helps prevent several common plumbing issues. Learn how this is completed with the correct tools and knowledge.
Technical Bulletins
Instant access to A. O. Smith technical bulletins for troubleshooting, covering water conditions, noisy water heaters, temperatures, leaking and more.
Documents, Videos & Images
Newsroom
Why A. O. Smith?
A. O. Smith is a leading manufacturer of both residential and commercial water heating technologies, including the #1 most specified commercial water heater.
For more than 145 years, we’ve developed state-of-the art products that push new boundaries and improve the lives of our customers.
We combine cutting-edge technology with committed people who take pride in providing the very best support for our customers.
Our products are put through rigorous quality and endurance testing so now matter where hot water is needed, A. O. Smith can provide a solution you can count on.