Suspect a gas leak? Leave immediately. From a safe distance, call 911 and your gas utility. If Atmos Energy is your provider, call 866-322-8667. Do not wait for an alarm, use electrical switches, or stay inside to investigate. Follow Atmos Energy’s emergency guidance.
A carbon monoxide alarm is not automatically a natural gas leak detector. For Allen and North Dallas homeowners, understanding that distinction helps prevent a dangerous assumption: a quiet alarm does not establish that a home is safe when someone suspects leaking fuel gas.
What a carbon monoxide alarm measures
Carbon monoxide, or CO, is an invisible, odorless gas that can result from incomplete fuel combustion. The EPA’s carbon monoxide safety guidance explains the hazard and the need for proper appliance use and maintenance.
Natural gas escaping from piping is a different hazard. Do not treat the words “gas” and “carbon monoxide” as interchangeable when describing an alarm or asking for service.
For example, First Alert’s combination smoke/CO alarm manual states that its CO sensor does not detect other gases. A smoke/CO combination label therefore does not mean natural gas detection is included. Check the specific model’s documentation.
Respond to danger before checking the model
If a CO alarm sounds, move everyone outdoors into fresh air and call 911. Follow emergency responders’ instructions and do not re-enter until they say it is safe. Never dismiss the alarm because you cannot smell anything.
For a suspected natural gas leak, leave and contact emergency services and the utility from a safe location. Do not test the alarm with gas, search for the leak, or attempt to restore shut-off service yourself.
Reading the manual is a preparation task for a safe home. It should never delay leaving during a suspected emergency.
Check the label after the immediate hazard is resolved
Once the home is safe, gather the model number and manual for each alarm. Write down the hazards each model is designed to detect. Do not infer coverage from its appearance, a digital display, or the fact that it plugs into an outlet.
Use the manufacturer’s instructions for placement, testing, maintenance, and replacement. Ask the manufacturer or a qualified installer if the labeling is unclear. This article does not determine which alarm installations your city requires.
Describe the incident precisely when arranging follow-up
Separate what you observed from what you were told. “The CO alarm sounded” differs from “the utility found a customer-side piping leak.” Give the service provider the emergency report or utility notice if one is available.
Ask which concern the proposed visit addresses. Fuel-piping leak diagnosis, appliance combustion evaluation, and alarm selection are different scopes. A clear handoff helps the appropriate professional investigate the unresolved issue.
Common alarm and gas-leak questions
Does every smoke/CO alarm detect natural gas? No. Confirm the exact model’s listed detection capabilities in its manual; do not assume an additional gas sensor is present.
Can I stay inside if the alarm is silent? A silent device does not override a suspected gas leak. Leave and make the emergency calls from a safe location.
Does a CO alarm identify a leaking pipe? No. Report the alarm accurately and let responders assess the immediate hazard. Follow-up work should address their findings.
Can a normal leak-detection appointment replace an emergency call? No. Emergency response comes first whenever a leak is suspected or a CO alarm sounds.
Non-emergency follow-up with Lone Star
After responders have made the property safe, call Lone Star Leak Locators to discuss customer-side gas leak diagnosis. If service was shut off, our Allen repair and reconnection guide explains useful records to keep. Do not use online scheduling as an emergency reporting channel.
Schedule non-emergency leak detection
Call Lone Star Leak Locators to confirm the testing scope and appointment availability for your property. Ask about written findings and the Certified Master Plumber Report.