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Water heaters in California

California requires water heaters to be strapped against earthquakes, and flexible gas connectors reduce the chance of a break during shaking. Any replacement should include seismic straps and current-code connections.

  • Licensed local plumbers
  • The problem explained before work starts
  • Price agreed before the job begins
Plumber using pliers on a water heater connection

Statewide conditions

Water heaters in California: what to know

Hard water in Southern California and the Central Valley builds scale in tanks and tankless units, while soft water from Hetch Hetchy and the East Bay means tanks there fail more from age and corrosion. Heaters in hot Central Valley garages and attics also see extreme summer heat.

Water heater replacements need a city permit, and contractors must hold a CSLB license. Many owners add an expansion tank and seismic gas shutoff valve at the same time.

Climate
Frozen pipes are rare in most of California. Heat, humidity, water quality and storms cause far more plumbing problems than cold.
Typical foundations
Older homes in established neighborhoods often have galvanized or cast-iron pipe, and many homes sit on slabs or raised foundations rather than basements. Most common: concrete slabs.

Water heaters services

Water heaters by city in California

Local pages cover each city's water provider, permit office and housing. Not listed? Check your ZIP code below.

Water heaters questions in California

Do California water heaters need earthquake straps?

Yes. California requires water heaters to be braced or strapped, and a plumber installs straps during any replacement.

How long does a water heater replacement take?

A like-for-like tank swap usually takes two to four hours. Switching to tankless or moving the heater can take most of a day because of gas, venting and electrical changes.

How these problems start and how to choose between repair options is covered in the water heaters guide.

More plumbing in California

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