Storage Tanks

Hot Water Storage Tanks for Commercial and High-Demand Systems

A hot water storage tank does one job exceptionally well: it holds a large reserve of pre-heated water so your system can meet peak demand without oversizing the heater itself. Unfired storage tanks pair with boilers, tankless units, and commercial water heaters to smooth out heavy draws - back-to-back showers in a hotel, a lunch rush in a commercial kitchen, or a wash-down cycle in a facility - and keep recovery times short.

Our lineup covers the sizes and ratings professionals specify most, with ASME-rated tanks from State and Lochinvar ranging from 80 up to 250 gallons and beyond. Choose standard jacketed models or factory-insulated versions that cut standby heat loss, in vertical and horizontal configurations to fit the mechanical room. Glass-lined interiors resist corrosion for long service life under constant hot-water duty.

Sizing a storage tank means matching total volume and recovery to your building's peak-hour demand, not just the heater's output. Undersize it and you run cold; oversize it and you pay to keep water hot you never use. Pair a tank with commercial water heaters or an indirect water heater, or buffer a tankless system for steadier output. Browse the full range of water heaters - free shipping on most orders over $99.