If the gas is off and the furnace tries to light it will go into lockout. When gas is back on turn off thermostat and breaker then back on. Repeat in 5 minutes if it didn't work. If you have a shiny metal post on your meter the gas company turned it off and locked it. Call them back.
Gas co put a lock on this one. It is shiny metal. Call them back. Do not let the furnace try to light without gas.
Issues we can fix fast
The furnace tries to come on but it won't light
The furnace flames come on but the blower doesn't
The blower runs constantly but no heat
The flames come on but go right out
The thermostat clicks on but the furnace never starts
The thermostat clicks on but the air conditioner won't start
The fan comes on but its not cooling
The fan on a/c isn't spinning
The air conditioner is buzzing and won't come on
The a/c makes a loud noise but doesn't start
The ac has a humming but not coming on
The air conditioner is running but not cooling