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Rheem vs AO Smith Water Heaters: Which Brand Is Right for You?
Choosing the right water heater can feel like a big decision, especially when you’re comparing top names like Rheem and AO Smith. Both brands have been around for decades and are trusted by homeowners for their quality and performance. Whether you’re focused on energy savings, smart home technology, or long-term reliability, this side-by-side comparison of Rheem vs AO Smith water heaters will help you find the best fit for your home.
Rheem Water Heaters Overview
Rheem has been serving homeowners since 1925 and is the largest water heater manufacturer in the U.S. Known for reliability and innovation, Rheem offers both tank and tankless models, with gas, electric, hybrid, and heat pump options. The company emphasizes sustainability and provides updates on its environmental progress, helping eco-conscious homeowners make smart choices.
What Customers Like
Customers consistently praise Rheem water heaters for:
- Energy-efficient performance
- Smart features like Wi-Fi connectivity and leak detection
- Easy installation
- Steady and reliable hot water supply
AO Smith Water Heaters Overview
AO Smith has been around for more than 80 years and has built a reputation for bringing commercial-grade quality to residential homes. The company partners with a national network of licensed contractors for trusted installations and offers a variety of tank, tankless, and hybrid models.
What Customers Like
Homeowners appreciate AO Smith water heaters for:
- Reliable performance and quick heat-up times
- A broad selection of models for different home sizes
- Energy-efficient systems that qualify for rebates and incentives
- Straightforward installation process
Rheem vs AO Smith Water Heaters: Feature Comparison
Available Product Types
- Rheem manufactures gas and electric models, offering tank, tankless, hybrid, solar, and heat pump systems.
- AO Smith offers tank, tankless, gas, electric, hybrid electric heat pump, and solar water heaters. The brand is also known for its commercial-grade construction.
Smart Features and Eco Benefits
Rheem:
- LeakGuard and LeakSense technologies to alert homeowners to leaks
- Energy use tracking and app control with vacation mode
- Some models may qualify for homeowners insurance discounts
AO Smith:
- Energy Star Partner of the Year (six years running)
- Rebate eligibility for energy-efficient models
- Online tool to help size and select the right water heater
- Some models allow remote temperature control via app
Regional Availability
Both water heater brands are widely available through licensed contractors and plumbing suppliers across the United States, making it easy to find and install a model that fits your home.
Rheem vs AO Smith Water Heaters Cost Comparison
Rheem
You can expect Rheem water heaters to range from $400 to $1,200, though some high-end models can cost up to $2,300. Installation costs vary based on your location and the contractor you choose. The good news? Rheem offers financing options for qualified homeowners, making it easier to manage upfront expenses.
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AO Smith
An AO Smith water heater can cost from $500 to $5,400, but most models fall under $2,000. Additionally, many units qualify for rebates and incentives that can offset upfront costs.
Durability, Longevity, and Customer Service
Rheem:
- Overall reputation for durability with proper maintenance
- Some users report issues like rusting or leaks over time
- Mixed reviews on customer service responsiveness
AO Smith:
- Generally considered reliable and long-lasting, especially for gas models
- Electric models may not last as long as competitors’
- Some reports of inconsistent customer service
Warranty Comparison
Rheem’s warranties vary depending on the water heater series you purchase:
- Classic: 6-year limited warranty
- Classic Plus: 8-year limited warranty
- Prestige: 12-year limited warranty
- Marathon: Lifetime warranty on the tank, 6 years on parts
- Optional ProtectionPlus adds up to 4 years of extra coverage
AO Smith structures its warranties based on the type of water heater you choose, whether it’s tank or tankless, gas or electric:
- Standard Gas or Electric: 6, 8, or 10-year warranties
- Electric (select models): 10-year parts and 1-year labor
- Gas Tankless: 15-year heat exchanger, 5-year parts
- Electric Tankless: 5-year heat exchanger, 1-year parts
Rheem vs AO Smith Water Heaters: Top Models & Series to Know
Rheem
If you’re looking for smart technology and reliable performance, Rheem is an excellent option. Whether you’re interested in high-efficiency tankless models or advanced leak detection, Rheem offers durable solutions for households of all sizes.
- Rheem Maximus Heavy Duty with LeakSense: This gas tank model includes an LCD display, built-in leak detection, app control, and vacation mode. It comes with a 12-year limited warranty for added peace of mind.
- Rheem RTEX-18: A compact, tankless unit offering 99.8% energy efficiency and copper heating elements. It’s a great fit for small to medium homes seeking reliable, on-demand hot water.
AO Smith
AO Smith is trusted for commercial-grade quality in residential systems. Their water heaters focus on energy efficiency and environmental responsibility, with options for households of all sizes.
- ProLine XE Series: Available in gas, electric, and tankless models, this line features eco-friendly Green Choice burners and warranties up to 10 years. It’s built for durability and energy savings.
- ProLine Gas Tankless Series: ENERGY STAR certified and designed for high-demand homes, these models offer up to a 15-year warranty and promise “endless hot water” for busy families.
Rheem vs AO Smith Water Heaters: Which Is Best for Your Home?
Rheem is a great choice if you’re looking for smart home integration, energy tracking, and a wide range of eco-friendly models. Homeowners who value innovation and sustainability often gravitate toward Rheem.
AO Smith is ideal for buyers who want long-term reliability with strong performance out of the box. Their commercial-grade design in residential products appeals to households needing extra durability and water output.
Whichever brand you choose, both Rheem and AO Smith offer solid water heater solutions that can improve energy efficiency, comfort, and convenience in your home.
Find the Right Contractor for Your plumbing Project
Whether you’re ready to begin your project now or need some expert advice, our network of contractors are here to help. With a few simple questions, we’ll find the best local professionals for you
Reviews from Real Homeowners
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