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Hot Water Runs Out Fast? Here Is Why (and 4 Ways to Fix It)

By Done Wright Plumbing · Updated 2026-11-05

If your shower used to last and now goes cold in five minutes, the heater is not delivering its rated capacity.

Broken dip tube

The dip tube sends cold water to the bottom of the tank. When it breaks, cold mixes with hot at the top and you run out fast. An inexpensive repair.

Lower heating element failed (electric)

Only the top third of the tank heats. A quick water heater repair.

Sediment build-up

Sediment takes up tank space and insulates the burner. A flush restores capacity.

Tank too small for the household

A 40-gallon tank cannot keep up with a family of five. Upgrade to a larger tank or a tankless water heater for endless hot water.

Done Wright Plumbing tests the dip tube, elements and thermostat, flushes the tank, and gives straight advice on replacement if that is the better value. Call (888) 809-6756.

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Water Heater Repair

No hot water, water heater leaking, pilot light out or a tank that rumbles and pops — Done Wright Plumbing repairs gas, electric and tankless water heaters in California the same day.

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Tankless water heaters deliver endless hot water, cut energy use by up to 30% and free up closet space.

Water Heater Replacement & Installation

When your water heater leaks or dies, you want hot water back today.

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