Water Heater Replacement Cost by Brand: Rheem, Bradford White, AO Smith

By Water Heater Replacement Cost Editorial Team, independent cost research
Updated 2026-06-17

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How brand affects water heater cost

The three brands that dominate residential water heater replacement in the United States are Rheem, AO Smith, and Bradford White. Together they account for the majority of units installed by licensed plumbers each year. Price differences between these brands are modest at the entry level, but diverge more at the high-efficiency and commercial ends of the market. This guide covers what each brand costs, what you get at each price point, and how to think about brand choice when budgeting a replacement.

Use our water heater replacement cost calculator to build an all-in estimate for your preferred brand and unit type.

Cost comparison by brand

Brand	Entry-level tank (40 to 50 gal)	Mid-grade tank	Tankless (gas)	Warranty (tank)
Rheem	$400 to $650	$650 to $1,100	$700 to $2,000	6 to 12 years
AO Smith	$450 to $700	$700 to $1,200	$800 to $2,200	6 to 12 years
Bradford White	$500 to $750	$750 to $1,200	$900 to $1,800	6 to 12 years
Navien (tankless)	N/A	N/A	$900 to $2,200	15 years heat exchanger
Rinnai (tankless)	N/A	N/A	$800 to $2,000	12 years heat exchanger

Rheem: best availability and widest price range

Rheem is the most widely available brand, sold through Home Depot, Lowes, and wholesale plumbing suppliers. That wide distribution means faster unit availability in most markets, which matters when you need an emergency replacement. Rheem's entry-level Performance series is often the lowest-priced option from a major manufacturer. The mid-grade Professional series adds longer warranties and higher efficiency ratings. Rheem also produces the popular ProTerra heat pump water heater, one of the top-selling hybrid models in the country.

The trade-off: Rheem's entry-level units are designed for retail distribution and use slightly lighter components than contractor-grade alternatives. For a rental property or a tight budget, that is a reasonable trade-off. For a primary residence where longevity matters, step up to the mid-grade tier.

AO Smith: strong reliability at a modest premium

AO Smith is the brand most commonly associated with long-term reliability in contractor discussions. The company focuses heavily on the professional market and builds units with thicker insulation, higher-grade steel on the tank lining, and more durable anode rods than entry-level retail brands. AO Smith costs $50 to $100 more than comparable Rheem models at the same capacity but tends to hold up slightly better in hard water conditions. Their Voltex heat pump water heater competes directly with the Rheem ProTerra.

Bradford White: the contractor-only brand

Bradford White does not sell through retail chains. You buy it through a licensed plumber or plumbing wholesaler only. That distribution model means slightly higher unit prices but also means the brand is not engineering products to a retail price point. Bradford White's Defender Safety System and Hydrojet sediment-reduction system are considered upgrades over what Rheem and AO Smith offer at comparable price points. If your plumber recommends Bradford White and you are comparing quotes that specify different brands, the Bradford White quote may be worth a small premium.

Navien and Rinnai: tankless specialists

For tankless-specific replacements, Navien and Rinnai are considered the premium tier. Both brands offer longer heat exchanger warranties (12 to 15 years), condensing technology for higher efficiency ratings, and better diagnostic systems than entry-level tankless units. Expect to pay $200 to $500 more for a Navien or Rinnai unit versus a Rheem or AO Smith tankless model, but warranty coverage and serviceability tend to justify the premium for households planning a 15 to 20 year ownership horizon.

Does brand matter as much as model tier?

Within any major brand, stepping up from entry-level to mid-grade typically delivers more value than switching between brands at the same tier. A mid-grade Rheem will outperform an entry-level Bradford White in durability and efficiency. Focus on warranty length, first hour rating, and energy factor for the model tier you select, then choose the brand your plumber has the most experience servicing. Technician familiarity with a brand is a practical advantage. Always get quotes from a licensed plumber who can advise on local parts availability and service support for the brand they recommend.

Frequently asked questions

Which water heater brand is most reliable? All three major brands (Rheem, AO Smith, Bradford White) produce reliable units at mid-grade and above. Bradford White has a slight edge in contractor satisfaction surveys, particularly for longevity in hard water areas.

Should I buy the brand my plumber recommends? Generally yes. A plumber who works with a specific brand regularly knows how to install it correctly, can source parts quickly, and is familiar with warranty claim procedures. That practical knowledge often matters more than minor brand differences.

Are store-brand water heaters (Costco, Home Depot) reliable? Most store-brand units are manufactured by the major brands under private labels. A Costco AO Smith or Home Depot Rheem is essentially the same unit with a different label. Check the underlying manufacturer before assuming the store brand is lower quality.

Bottom line

Rheem, AO Smith, and Bradford White all make reliable water heaters. Bradford White and AO Smith have slight edges in contractor markets and hard-water durability. Navien and Rinnai lead for tankless. Use our water heater replacement cost calculator to compare all-in costs by brand, and get quotes from a licensed plumber who can advise on what is locally available and serviceable.

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