You turn on the shower, expecting hot water, only to find that the water heater has shut off without warning. Before you look into water heater repair in Milwaukee, it helps to understand what causes the shutdowns.
Feltner Sewer & Drain has helped local homeowners with plumbing issues since 1996, and one question we often hear is “Why does your water heater keep turning off?” This guide covers the most common causes.
What Makes a Water Heater Shut Off Unexpectedly
A water heater may shut off because a safety control activates or because the unit loses gas or electrical power. The exact cause depends on which type of water heater you own, since gas and electric models respond differently.
Pilot Light and Thermocouple Sensor Problems
When the Pilot Light Won’t Stay Lit
If you have a gas water heater, a weak or flickering pilot light is a common reason it shuts down. Drafts can extinguish the pilot, while worn ignition or safety components can prevent it from staying lit and cause the gas valve to close.
Thermocouple Sensor Failure
A faulty thermocouple sensor can repeatedly shut down a gas water heater. Once it wears out, it may cut off the gas supply even when the pilot flame is present.
Sediment Buildup and Overheating
Over time, minerals can settle at the bottom of a tank-style heater and form a barrier between the heat source and the water, which can contribute to overheating or a safety shutdown.
A few signs point to sediment:
- Rumbling sounds: Sediment creates noise as the tank heats.
- Slower heating: Buildup makes the tank take longer to heat the water.
- Discolored water: Sediment may enter the hot-water supply.
Regular flushing helps prevent this buildup to keep the heater operating efficiently.
Problems With Electric Water Heaters
Your electric water heater shuts off for different reasons than a gas model. Electrical problems such as a tripped breaker can cut power, while a failing heating element or faulty thermostat can prevent the water from heating properly.
Feltner Sewer & Drain Is Here To Help With Your Water Heater
We understand how frustrating repeated shutdowns can be. Knowing why your water heater keeps turning off helps you describe the problem more accurately when requesting a repair.
If a water heater issue is disrupting your routine, our plumbers can pinpoint the cause. If you are also concerned about an odor from your tank, read our article on why your water heater smells. For water heater repair in Milwaukee, call Feltner Sewer & Drain at (866) 335-8637.
Frequently Asked Questions
Is It Safe To Relight a Water Heater Pilot Light Yourself?
Only relight the pilot if you do not smell gas, and follow the manufacturer’s instructions carefully. If you smell gas, leave the area and contact the gas utility.
Can Cold Weather Cause a Water Heater To Shut Off?
Cold temperatures can make a water heater work harder and may contribute to shutdowns in some systems.
How Long Do Water Heaters Usually Last Before Needing Repairs?
Tank water heaters commonly last eight to 12 years, although repairs may be needed sooner.
