If you want to take care of your furnace in Boulder City, you'll need to follow a set of directions that ensure your safety as well as the success of the project. The first step is to turn off the power and the gas line to the furnace. If you don't do this, you're risking electric shock, not to mention a flame or explosion. Next, you'll want to check and clean (if necessary) the filter, which you should really do every couple of months (the filter is the most direct line between the furnace and the space it heats). After that, you're going to want to clean the blower. The next step is to check the thermostat. A furnace can do everything right but still fail to heat the space if the thermostat isn't functioning.5. Check the Burner Flames: Switch on the furnace and ensure that the burner flames are blue and steady. If the flames are yellow or flickering, there could be a problem with your furnace. 6. Clean Air Vents and Ducts: To guarantee maximum furnace efficiency, clean the air vents and ducts of dust and any other kind of obstruction that might reduce airflow. 7. Lubricate Motor Bearings: If your furnace has motor bearings that need lubrication, use light machine oil to ensure that the bearings operate smoothly. 8. Inspect Ductwork: Look over the furnace ductwork for any loose seams or holes. When seams are loose or there's a hole, most of the heated air escapes before it can do you any good.9. Inspect the Vent Pipe: Make certain the pipe that vents the furnace can do so without obstruction. This is required for the safe venting of the combustion gases.10. Do a Test Run: Fire up the furnace and watch it work for a little while. This is necessary to ensure that all components are functioning as intended—especially those that could be dangerous if they weren't functioning correctly. If you're dreading the idea of a furnace failure while the temperature outside is below freezing, then again, consult the manual or a pro. Don't wing it.