Gas Leak from HVAC — Emergency Steps

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

Gas Odor Near Your Furnace — Take Action Now

Utility companies add mercaptan — a sulfur-based compound with a distinctive rotten-egg smell — to natural gas and propane so leaks can be detected. If that odor appears anywhere near your furnace, water heater, or another gas appliance, treat the situation as an emergency. Avoid flipping electrical switches, do not use a phone indoors, and light nothing. Open doors and windows on your way out, evacuate everyone, move at least 100 feet from the structure, and call 911 along with your gas provider from a safe location. This level of caution is not excessive — it can be lifesaving.

Where HVAC Gas Leaks Typically Start

The most common origins of gas leaks in HVAC systems are corroded or loosened fittings where the gas supply connects to the furnace, a malfunctioning gas valve, a cracked heat exchanger that lets combustion gases escape, and aging flexible gas connectors. Propane-heated homes across Western North Carolina face added risk because propane regulators and fittings deteriorate with time. Once your gas company has cleared the area as safe, Quality Mechanical can pinpoint the leak source and carry out the needed repair — or advise on furnace replacement if the damage warrants it.

Stopping Leaks Before They Start

The majority of gas leaks develop slowly through corrosion and component wear — issues that a professional HVAC safety inspection can catch well before they reach a dangerous stage. Our technicians rely on electronic gas-leak detectors and perform pressure tests on gas lines to find leaks too small to detect by smell alone. We recommend having the gas system inspected annually in every home that uses gas or propane heat. Catching a problem early is always safer, less expensive, and far less stressful than responding to an emergency.