The furnace was running okay, but there were a few minor issues. The pilot light was out, and the thermostat was not working properly. I checked the gas line and found that it was not connected properly. I reconnected the gas line and tested the thermostat. The thermostat was working properly, and the furnace was running smoothly. I also checked the air filter and found that it was dirty, so I replaced it with a new one. The furnace is now running smoothly and efficiently.
