Gas Leak from HVAC — Emergency Steps

Professional Gas Leak from HVAC — Emergency Steps in Asheville & Western NC

If You Smell Gas — Act Immediately

Natural gas and propane are odorized with mercaptan, a sulfur compound that smells like rotten eggs. If you detect this odor near your furnace, water heater, or any gas appliance, treat it as an emergency. Do not flip any electrical switches, do not use your phone inside the house, and do not light any flames. Open doors and windows as you exit, get everyone out of the home, move at least 100 feet away, and call 911 and your gas utility company from outside. This is not an overreaction — it could save your life.

Common Sources of HVAC Gas Leaks

Gas leaks in HVAC systems most commonly originate from corroded or loose gas line fittings at the furnace connection, a failed gas valve, a cracked heat exchanger allowing combustion gases to escape, or deteriorated flexible gas connectors. Homes in Western North Carolina with older propane-fueled furnaces are particularly susceptible, as propane fittings and regulators degrade over time. After the gas company confirms the area is safe, Quality Comfort can identify the exact source and perform the necessary repair or recommend furnace replacement if the damage is severe.

Prevention Through Regular Inspection

Most gas leaks develop gradually from corrosion and wear — problems that are detectable during a professional HVAC safety inspection long before they become dangerous. Our technicians use electronic gas leak detectors and perform pressure testing on gas lines to identify leaks too small to smell. We recommend annual gas system inspections for all homes with gas or propane heating. Prevention is always safer, cheaper, and less stressful than dealing with an emergency.