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U.S. Boiler Company Announces National Availability of Stainless Steel Indirect Tank

March 24, 2026

U.S. Boiler Company announces the national availability of its Alliance™ SST stainless steel indirect water heater, offering contractors a durable domestic hot water solution for hydronic applications.

Previously available in select regional markets, the product is now available nationwide. The tank features a stainless steel cylinder and coil designed for long service life and reliable hot water production in residential applications.

Available in five sizes from 30 to 111 gallons, the Alliance™ SST includes an adjustable Honeywell L4080B Aquastat. Its smooth coil resists scale buildup while providing efficient heat transfer and rapid hot water recovery.

The stainless steel tank is passivated during manufacturing, restoring the natural oxide layer that helps protect the surface from corrosion. Thick insulation minimizes standby heat loss, a rugged steel jacket and heavy-duty polymer caps provide additional durability, and the low-profile design provides easier access to connections.

Models from 30–75 gallons include adjustable leveling feet and a sacrificial anode rod kit for corrosion protection.

The Alliance™ SST includes an eight-year leak-free warranty, which can be upgraded to a lifetime warranty at no additional cost when the product is registered within 30 days of installation.

For more information about indirect water heaters, please visit https://www.usboiler.net/indirect-water-heaters.

Filed Under: Press Release

U.S. Boiler Company is a leading manufacturer of home heating equipment, water boilers, steam boilers, hot water heaters, radiators and boiler control systems.
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