Why is there no hot water anywhere in the house?
The water heater may lack power or fuel, have a tripped safety control, failed heating component, or supply problem.
Urgency: urgent
What this means
Confirm the symptom at more than one faucet and identify whether the heater is gas, electric, or tankless.
Safe checks
- Check only normal user controls and the labelled breaker once
- record any displayed error code
- consult the exact manual.
Stop and get help if
- Leave for gas odour or CO alarm. Call service for leaks, repeated breaker trips, combustion, internal electrical, or pressure-relief work.
Which professional to call
Contact the matched licensed or qualified trade if safe checks do not resolve the issue.
Find the relevant tradeSource and method
This answer combines HomeSOS's structured triage with safety boundaries supported by a public source. It does not replace inspection.
Health Canada: Home safety and indoor air guidanceReviewed August 12, 2026