80 GAL WATER STORAGE TANK
80 GAL WATER STORAGE TANK
ST80
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$1,898.40
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$1,898.40
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🔥 What it is
The Rheem ST80 is an 80-gallon insulated hot water storage tank used in commercial and large residential hot water systems.
⚙️ What it does
It does not heat water on its own. Instead, it:
- Stores large volumes of already-heated water
- Works with a boiler or water heater system
- Helps supply high-demand hot water quickly
- Smooths out demand spikes (showers, laundry, commercial use)
🧰 Key features
- Capacity: 80 gallons
- Construction: glass-lined / porcelain enamel steel tank
- Insulation: rigid polyurethane foam
- Pressure rating: typically 150 PSI
- Connections: large 2-inch inlet/outlet fittings
- ASME-rated versions available depending on model
- Designed for commercial hot water systems
🏢 Where it’s used
- Apartment buildings
- Schools / gyms / commercial facilities
- Large homes with high hot water demand
- Boiler-based hydronic hot water systems
🧠 Simple explanation
It’s basically a big insulated “hot water holding tank” that sits between a heater/boiler and your fixtures so you don’t run out of hot water during heavy use.

80 GAL WATER STORAGE TANK
$1,898.40