No Hot Water in House

When hot water stops completely, the water heater usually isn’t producing heat—or heated water isn’t reaching fixtures. Electric heaters may have a tripped breaker, failed heating element, or high-limit reset. Gas heaters may have pilot/ignition failure, gas supply interruption, or venting/safety shutdown.

Sometimes the heater is working, but a mixing valve, recirculation system, or plumbing crossover can make water feel lukewarm. A targeted set of checks helps narrow the cause before scheduling service.

• Confirm the issue at multiple fixtures (sink + shower) to rule out a single-faucet cartridge problem.
• For electric heaters: check the water heater breaker/fuse and whether it appears tripped.
• For gas heaters: check if other gas appliances work (stove/furnace) to confirm supply.
• Look for obvious leak signs at the heater base, T&P discharge pipe, or nearby pan/drain.
• Verify the temperature setting hasn’t been turned down accidentally on the thermostat/control.

1. If electric: reset the breaker once. If it trips again, stop and call a plumber/electrician (do not keep resetting).
2. If gas: ensure the gas shutoff valve is open and follow the manufacturer’s lighting instructions if you have a standing pilot.
3. Check for an accessible reset button behind the electric heater’s upper panel only if you can safely turn off power first.
4. Flush a small amount of water from the heater drain valve (if present and safe) to see if heavy sediment is present—sediment can reduce heating efficiency and cause shutdowns.
5. Schedule service if hot water does not return within 30–60 minutes after safe resets/ignition checks.

• If the breaker repeatedly trips, the heater won’t ignite, or error codes persist.
• If you see leaking, rust-colored water, or corrosion at fittings/valves.
• If the water is only lukewarm and temperature fluctuates unpredictably.
• If the unit is older and has significant sediment or rumbling noises.
• If there’s any gas odor, venting issue, or combustion-related concern.