Troubleshooting for No Heat

What to do if the furnace won't come on:

1. If you smell gas, please contact the gas supplier from your neighbor's phone. Do not light any appliance, touch any electrical switch or use a phone inside your home. If you cannot reach the gas supplier, please call 911.
2. If you have no electricity, your furnace will not work. Please call your utility company.
3. If you have a digital thermostat and it is not displaying a temperature, replace your batteries in the thermostat.
4. If the furnace is on, but no air is coming through the vents, call a technician for repair work.