Rheem vs. A.O. Smith Heaters: Which Is Better?

Rheem Ikonic water heater.
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Rheem vs A.O. Smith Heaters Comparison

FeatureRheemA.O. Smith
Price Range (50-gallon electric)$500-$600$450-$550
Uniform Energy Factor (UEF)Up to 0.93Around 0.90
Annual Energy SavingsUp to $200 annuallyUp to $180 annually
Average Lifespan12-15 years10-12 years
Warranty (Tank and Parts)12 years6-10 years
First-Hour Delivery (50-gallon)Up to 67 gallonsAround 62 gallons
Special FeaturesEverKleen™ self-cleaning, EcoNet™ technology, Wi-Fi connectivityBasic features, some models with Wi-Fi connectivity
Ease of InstallationUser-friendly components, clear instructionsMore specialized knowledge required
Maintenance RequirementsLow due to self-cleaning systemHigher due to more frequent maintenance
Customer SupportExceptionalAdequate
Overall DurabilityHighModerate
User SatisfactionHighModerate

Which Water Heater Is Better?

Rheem is generally the better choice due to its higher energy efficiency (up to 0.93 UEF), longer lifespan (12-15 years), better warranty (12 years), and advanced features like EcoNet™ technology. While A.O. Smith offers good performance, Rheem's reliability and lower maintenance needs make it the superior option for most homeowners.

If you're looking for a reliable, efficient, and cost-effective water heater, Rheemhas the edge over A.O. Smith. With superior energy efficiency, longer warranties, and better overall performance, Rheem units are designed to meet the needs of modern homeowners. Let’s dive into the details.

What Is Rheem and A.O. Smith?

Rheem has been a trusted name in the water heating industry since 1925.Rheem offers a wide range of water heaters that cater to different needs and budgets. Their products are designed to be energy-efficient and reliable, providing homeowners with peace of mind and long-term savings.

A.O. Smith, founded in 1874, is another major player in the water heating market. They have a solid reputation for producing durable and high-performing water heaters. A.O. Smith offers a variety of models, including traditional tank water heaters and newer tankless options, aiming to meet the diverse needs of homeowners.

One of the critical factors in choosing a water heater is energy efficiency. Water heaters are rated using the Uniform Energy Factor (UEF), which measures the overall efficiency of the unit.

Rheem 50-Gallon Gas Water Heater: The Rheem Performance Platinum 50-gallon gas water heater boasts a UEF rating of 0.72. This high rating means it uses energy efficiently, saving homeowners money on utility bills.

A.O. Smith 50-Gallon Gas Water Heater: The A.O. Smith Signature Premier 50-gallon gas water heater has a UEF rating of 0.70. While still efficient, it falls slightly behind Rheem in terms of energy savings.

In my experience, Rheem's focus on energy efficiency consistently translates into lower operating costs for homeowners.

Durability and Lifespan

Rheem water heaters are built to last, featuring robust materials and advanced technologies that enhance their lifespan. For instance, many Rheem models come with EverKleen™ self-cleaning systems that reduce sediment build-up, a common issue that can shorten the lifespan of water heaters. On average, Rheem water heaters have a lifespan of 12-15 years, whereas A.O. Smith units typically last around 10-12 years. This extra longevity means fewer replacements and lower overall costs in the long run. In my years of service, I’ve noticed that Rheem units require fewer repairs compared toA.O. Smith. A particular anecdote comes to mind: a homeowner had an A.O. Smith unit that needed frequent anode rod replacements to prevent corrosion, whereas similar Rheem units in the same neighborhood had no such issues.

Water Heater Installation

From a plumber's perspective, the ease of installation can significantly affect the overall cost and time required to set up a new water heater. Rheem water heaters are designed with user-friendly installation in mind. Features like flexible venting options and side water connections simplify the process. A.O. Smith units are also relatively straightforward to install, but they may require additional adjustments and parts, increasing installation time and complexity. Regular maintenance is essential to keep your water heater running smoothly.

Based on my experience, Rheem water heaters tend to have fewer issues and are easier to maintain. Common maintenance tasks for Rheem units include flushing the tank to remove sediment and checking the anode rod. These tasks are relatively simple and infrequent. A.O. Smith water heaters may require more frequent maintenance and have a higher likelihood of issues such as pilot light problems and valve replacements.

Case Study: 50-Gallon Gas Water Heater

To provide a detailed comparison, let's look at the Rheem Performance Platinum 50-Gallon Gas Water Heater and the A.O. Smith Signature Premier 50-Gallon Gas Water Heater.

Rheem Performance Platinum 50-Gallon Gas Water Heater

UEF Rating: 0.72

Warranty: 12 years limited, 3 years in-home labor

Features: Stainless steel heating elements, advanced self-diagnostic system, low NOx burner

A.O. Smith Signature Premier 50-Gallon Gas Water Heater

UEF Rating: 0.70

Warranty: 10 years limited, 1 year in-home labor

Features: Blue Diamond glass coating for corrosion resistance, electronic gas control for precise temperature management

In my professional opinion, the Rheem Performance Platinum model offers superior energy efficiency, a more extended warranty, and advanced features that make it a better investment for homeowners.

Which Water Heater Should I Choose?

After years of installing and maintaining water heaters, I confidently recommend Rheem water heaters over A.O. Smith for residential homeowners. Rheem units consistently deliver better performance, energy efficiency, and durability. Their longer warranty and lower maintenance needs further solidify their position as the top choice.

If you're considering a new water heater, don't hesitate to reach out to Cheneverts Plumbing Repair. We offer expert advice, installation, and maintenance services to ensure you get the best water heater for your home. Contact us today for a free consultation or inspection.