Gas-fueled furnaces cannot produce heat if the pilot light or electrical ignition system fails
This is a simple fix. Maintaining your furnace will be easier if you check your filter at least once or twice every few months and replace it as needed. A faulty or incompatible thermostat won’t cause a furnace to fail, but it can affect how it works. Before troubleshooting other elements that may be causing the problem, check the thermostat first. A blower motor circulates air throughout your home. If it fails, your furnace will still be able to ignite and run, but the blower motor will not be activated, preventing air from circulating in your home. The pilot light or electrical ignition system in your furnace could malfunction, affecting the functionality of your unit. Gas-fueled furnaces cannot produce heat if the pilot light or electrical ignition system fails. An inadequate fuel supply and problems with the fuel supply line can affect natural gas-fueled furnaces. Gas is volatile and toxic, however, so a qualified technician should address any issues with a fuel supply line.