Where can a water heater go in a California garage?

In San Jose, burners and elements must be at least 18 inches above the floor unless in a sealed compartment accessed from outside.

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California water heater installation rules cities inspect

Source: California Plumbing Help (californiaplumbinghelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.

Every water heater needs a temperature and pressure (T&P) relief valve with a drain to the outside, ending 6 to 24 inches above the ground, pointing down.
In a garage, any heater that can make a glow, spark or flame must have its burner or elements at least 18 inches above the floor.
In an attic, an approved safe pan with at least a 3/4 inch drain is required.
Gas water heaters (other than direct vent) may not go in bathrooms, bedrooms or closets opening into them.
Tankless heaters usually need more gas; existing gas piping must be sized for the load, and new or altered gas piping must be pressure tested.

Last updated: November 2, 2026