No hot water usually traces back to the water heater, and some causes are simple. Here are the safe checks to try first, and when to call a plumber.
Gas water heater: no hot water
- Pilot out: follow the lighting instructions on the label. See how to light a water heater pilot.
- Pilot will not stay lit: often a thermocouple or flame sensor, which needs repair
- Gas supply off: check the gas valve to the heater is on
Electric water heater: no hot water
- Tripped breaker or a tripped high-limit reset button on the heater
- Failed heating element or thermostat: common and repairable
Hot water only in some places
If one fixture has no hot water but others do, the problem is likely that faucet or shower valve, not the heater.
Tankless: no hot water
Check for an error code on the display, a closed gas valve, or a clogged inlet filter. Scale buildup is common with hard Inland Empire water and calls for a descale/flush.
When to stop and call
If you smell gas, leave the house and call the gas company first. Call us if the tank is leaking, the pilot will not stay lit, or a reset keeps tripping. If the heater is old and leaking, see water heater replacement.
Call (909) 927-3194. We answer 24/7.
Drain Edge Rooter · 619 E South St, Rialto, CA 92376 · (909) 927-3194 · Open 24/7 · CA C-36 #1078977 · about 139 five-star Google reviews
Quick Answers: No Hot Water? Causes & Fixes
Why do I suddenly have no hot water?
The most common causes are a pilot that went out, a tripped breaker or reset on an electric unit, or a failed part such as a thermocouple, element or thermostat.
Can you fix no hot water today?
We are open 24/7. Call (909) 927-3194 and we will give you a straight answer on timing.
Is Drain Edge Rooter licensed?
Yes. Owner Isaiah Infante holds California C-36 plumbing contractor license #1078977.
What areas do you serve?
Rialto, Fontana, San Bernardino, Colton, Rancho Cucamonga, Ontario, Upland, Redlands, Highland, Loma Linda, Bloomington, Grand Terrace and North Riverside, from our shop at 619 E South St in Rialto.