Gas leaks in gas heating systems are not regular but can be fatal if left unmaintained over time. Conducting routine repair on your gas furnace will keep it at its best working condition and reduce leaks’ chances, however, it is essential to think about how to tell if your gas furnace is leaking. There are several indications of leakage on a gas furnace these days. One, the smell of sulfur or rotten eggs indicates gas leakage. This is an unpleasant smell, to be sure. You need to follow the odor to the point where it is leaking from within or without the house. It could be leaking from a strange gas-powered appliance or a nasty electrical malfunction. Identifying the cause of the smell will help you diagnose the leaky problem’s extent and think what to do next. You should call an Heating and Air Conditioning worker as soon as possible to fix the problem, given that leaking gas is dangerous. If the existing smell of rotten eggs is not strong, it might be a slight gas leak. However, if you honestly do not have to strain to smell the foul gas, your gas furnace might be having heavy leaks at that point. You should turn off the Heating and Air Conditioning equipment and gas line to try to prevent further leaks. Call an Heating and Air Conditioning repairman. Another common sign of leaking gas in your Heating and Air Conditioning component is the horrible smell of gas from your system’s air vents. When you smell gas from your registers or vents most of the time, you should switch off the heating system and open your home’s doors and call 911.