Published by All Systems Pros · Updated October 12, 2026
First, the safety sequence
If you smell gas (the rotten-egg odorant) indoors:
- Don't flip switches, light flames, or unplug anything — any spark is a risk
- Leave immediately; do not delay evacuation to ventilate the building or investigate
- Get everyone (pets included) out and away from the building
- From a safe place, call SoCalGas at 1-800-427-2200; call 911 for immediate danger or if you cannot reach the utility
- Don't re-enter until the utility clears the building
The utility stops the danger; the repair comes next
The utility responds to the reported hazard. A qualified contractor may repair customer-owned piping and arrange required tests and inspections. If gas has been shut off at the meter, leave it off: SoCalGas states that only its field employees may turn service back on there. Coordinate appliance checks and restart with the responsible professionals.
What quality gas work looks like
Gas piping work requires appropriate qualifications, approved materials, and the tests and inspections specified for the project. Ask how the repair, permit, testing, and utility coordination will be handled. A passed pressure test documents the tested piping; it does not replace appliance checks or permission to restore service.
Slow leaks are still emergencies
A faint odor, hissing, or other suspected leak requires the same immediate evacuation and utility call as a strong odor. Do not wait for a plumber appointment or try to locate it yourself. An unexplained bill increase has several possible causes; if you suspect escaping gas, follow the emergency steps above.
Sources and further reading
About All Systems Pros
All Systems Pros is a plumbing service company based in Monrovia, CA. The company lists Rheem ProPartner, A. O. Smith Certified Contractor, and Raypak credentials. These general guides help explain plumbing topics; equipment instructions and project requirements must be checked for the specific property.
