Is Rheem or AO Smith a better water heater?

Author: scraper  |  Last update: Tuesday, August 25, 2026

Neither brand is universally better; the right choice depends on your priorities. A.O. Smith is ideal if you want a reliable, commercial-grade workhorse that requires minimal maintenance. Rheem excels in smart-home integration, smartphone app controls, and ultra-high efficiency, making it the top choice for tech-savvy homeowners.

What is the most reliable brand of water heater?

For traditional tank water heaters, Bradford White, A.O. Smith, and Rheem are consistently ranked as the most reliable brands by plumbers and industry experts. For tankless systems, Rinnai and Navien are widely considered the gold standard for long-term durability and performance.

What are common problems with Rheem heaters?

There are several reasons why your Rheem water heater may stop producing hot water, including a malfunctioning thermostat, sediment buildup, or issues with the heating elements. If you're not getting hot water, it's advisable to consult with a plumbing expert who can diagnose and fix the problem effectively.

Where does Rheem rank?

Forbes Ranks Rheem the No. 1 Air Conditioning Brand. Quiet operation, price and excellent customer service earned Rheem top marks as the number 1 air conditioning brand.

What is the lawsuit against A. O. Smith water heaters?

Water heater manufacturer A.O. Smith Corp. on Monday was hit with a proposed class action in Wisconsin federal court alleging that its home water heaters have defective plastic valves that can suddenly leak and flood basements, ruin floors, and cause expensive repairs.

A O Smith vs Rheem – Which Water Heater Should You Choose Expert Comparison Guide

What is the life expectancy of an A. O. Smith hot water heater?

A.O. Smith water heaters generally last between 8 to 12 years for traditional tank models, and 15 to 20 years for tankless units. However, their actual lifespan largely depends on usage, water quality, and maintenance.

What are common A. O. Smith issues?

Common problems include insufficient hot water from faulty heating elements, leaks from loose connections, strange noises from sediment buildup, and rust-colored water. While DIY repairs work for simple tasks like replacing anode rods or flushing tanks, professionals ensure proper tools, safety, and faster repairs.

What is the life expectancy of a Rheem water heater?

A standard Rheem water heater lasts between 8 to 12 years for traditional tank models, and 15 to 20+ years for tankless units. The exact lifespan largely depends on the system type, water quality, and whether you keep up with routine maintenance like flushing the tank and replacing anode rods.

Is Rheem a budget brand?

Affordable Upfront Cost: Rheem systems are often significantly more budget-friendly, allowing you to get a high-quality unit without the financial strain.

Are Rheem water heaters made in the USA?

Yes, Rheem manufactures many of its residential and commercial water heaters in the USA, though they also operate production facilities in Mexico and other global locations.

Is there a recall on Rheem hot water heaters?

To check if your unit is affected by a safety recall, locate the rating plate near the bottom of the unit. The most significant voluntary recall involves Rheem "Performance Platinum" electric water heaters (40, 50, and 80-gallon) sold at Home Depot between 2014 and 2016.

Is Rheem still good?

Yes, Rheem systems are known for their solid construction, energy efficiency, and affordability. They're a dependable choice for homeowners who want consistent comfort without the higher cost of premium models.

Do Rheem water heaters have a lifetime warranty?

Rheem water heater warranties range from six years to a limited lifetime depending on the series, with Classic models offering six-year coverage and Marathon models providing a lifetime tank warranty with six-year parts coverage.

Which is the No. 1 water heater brand?

There isn't a single "number 1" model, as the ideal water heater depends on your home's setup, but top-rated brands dominating the market include Rheem (best overall tank/tankless) and A.O. Smith (best for durability and commercial-grade units).

How much does Home Depot charge to install a water heater?

The Home Depot offers traditional water heater tanks and modern tankless units, both powered by either gas or electricity. Depending on your selection, the average cost for standard tank installation is generally between $1,600 to $2,400. Tankless installation can range from $2,400 to $5,400.

Are AO Smith good water heaters?

Yes, A.O. Smith is highly regarded as a premium, reliable brand. They are widely considered a top-tier industry leader, particularly favored for their heavy-duty, commercial-grade build quality and "set it and forget it" long-term reliability.

Is Rheem a Japanese company?

Yes, Rheem is owned by a Japanese company. Since 1988, Rheem has been a wholly owned subsidiary of Paloma Co., Ltd. (based in Nagoya, Japan), which is one of the world's largest producers of gas appliances.

What is the most reliable brand of hot water heater?

The most reliable water heater brands generally include A.O. Smith, Rheem, and Bradford White for traditional tanks, and Navien or Rinnai for tankless models. These brands consistently rank highest among plumbers and consumer reviews for durability, parts availability, and long-term performance.

Are Goodman and Rheem the same?

No, Goodman and Rheem are completely separate companies and brands with distinct manufacturers, designs, and corporate ownership:

What is the average labor cost to install a 40-gallon water heater?

A 40-gallon tank water heater installation costs $700 to $2,300, with an average cost of $1,650. Prices vary based on energy source and installation complexity. The national average cost to install a 40-gallon tank water heater ranges from $700 to $2,300.

Is there a class action lawsuit against Rheem?

A class action settlement (West v. Rheem Manufacturing Company, and Melet Plastics, Inc.) resolved allegations that specific Rheem water heaters with round poly drain valves (sold between 2019 and 2023) are defective and prone to leaking. The final deadline to submit a claim for this settlement was March 20, 2026.

How long will an AO Smith water heater last?

An A.O. Smith water heater typically lasts 8 to 12 years for traditional tank models and 15 to 20 years for tankless units. However, this lifespan heavily depends on your local water quality, unit maintenance, and the quality of the installation.

Is there a recall on A. O. Smith hot water heaters?

Over 616,000 A. O. Smith natural and propane gas water heaters made between April 2011 and August 2016 were recalled for fire hazards when installed on combustible surfaces.

Why does my hot water only last 5 minutes in my shower?

This problem usually comes down to capacity, heat production, or mixing issues inside your plumbing system. Sometimes the fix is simple, like adjusting your water heater temperature or flushing out sediment. Other times you may need a new mixing valve, an element replacement, or a different size water heater.

What is the longest lasting water heater brand?

The longest-lasting water heater brands are Bradford White and Rheem (specifically the Marathon series). Bradford White is favored by plumbers for professional installations and longevity, while the Rheem Marathon uses a unique fiberglass tank backed by a true lifetime warranty.

Previous article
Is Goodman Energy Star rated?
Next article
What does a structural survey look at?