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Rheem 120-Gallon Commercial Hot Water Tank

$2,159.18 on Amazon.com (as of October 16, 2026, 9:52 AM EST) View details ↗

The Rheem 120-Gallon Commercial Hot Water Storage Tank is a robust vertical tank engineered for high-demand applications requiring large volumes of hot water in short bursts. Built with Rheem-Ruud commercial-grade durability, this tank pairs seamlessly with Rheem-Ruud water heaters to deliver reliable performance in restaurants, hotels, laundromats, and other commercial settings where consistent hot water supply is critical.

Constructed from a proprietary steel formulation with two coats of high-temperature porcelain enamel, the tank resists corrosion and extends service life. It includes two heavy-duty magnesium anode rods for added protection, ensuring long-term efficiency. The tank’s compact design allows it to pass through a 30-inch opening, simplifying installation in tight spaces. Standard connections include a 2-inch NPT circulating line and hot water outlet, with additional openings for the temperature and pressure (T&P) relief valve and temperature control. Note that the T&P valve must be purchased separately, as it is not included.

Capacity120 gallons
MaterialProprietary steel with two coats of high-temperature porcelain enamel
Opening SizeFits through a 30″ doorway
Connections2″ NPT circulating line & hot outlet; T&P relief & temperature control openings
Anode ProtectionTwo heavy-duty magnesium anode rods included
Is this tank compatible only with Rheem-Ruud water heaters?
While designed for optimal performance with Rheem-Ruud systems, this tank can technically pair with other compatible commercial water heaters—verify connection compatibility before installation.
Do I need to order anything extra for installation?
Yes, the temperature and pressure (T&P) relief valve is not included and must be purchased separately.
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