Do Dallas Water Heaters Need Expansion Tanks?

Why

Heated water expands. With nowhere to go, pressure rises and can stress the heater and relief valve.

Code

The 2021 IPC and IRC, adopted by Dallas with amendments, address thermal expansion control. Your installer confirms whether it applies to your home.

Related Dallas plumbing services

• Water Heater Replacement in Dallas

Sources

• City of Dallas — Current City Code (adopted construction codes)

Official sources, checked October 2026. Rules and fees change; confirm current requirements with the issuing agency.