Before you assume the worst, there are a few things worth checking when your water heater suddenly stops producing hot water. Some fixes take two minutes. Others mean it's time to call for repair.
Quick Checks Before You Call
- 1
Check the breaker or gas supply
For electric units, check your circuit breaker panel for a tripped switch. For gas units, make sure the gas supply valve is open.
- 2
Look for a pilot light that's gone out
On older gas water heaters, a pilot light that's out will stop the unit from heating. Many have simple relighting instructions printed on the tank.
- 3
Check the thermostat setting
It sounds simple, but a thermostat accidentally turned down, or reset after a power outage, is a common and easy fix.
- 4
Listen and look for leaks
A puddle at the base of the tank, rust-colored water, or unusual noises usually mean it's a repair, not a reset.
Quick tip: If you smell gas near your water heater at any point, skip the troubleshooting. Leave the area, don't flip any switches, and call for help right away.
When It's Time to Call a Plumber
If the simple checks don't bring hot water back, or if you notice leaking, strange noises, or discolored water, it's time to call. A water heater that's struggling often gets worse quickly, and catching the problem early can mean the difference between a repair and a full replacement.