Thermal Expansion Requirements (Florida)

Are thermal expansion tanks required on new Water Heater installations in the state of Florida?

It depends but often is the case.

P2903.4.2 Backflow prevention device or check valve

Where a backflow prevention device, check valve or other device is installed on a water supply system using storage water heating equipment such that thermal expansion causes an increase in pressure, a device for controlling pressure shall be installed.

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