It happens every fall. The same people who think they won't need the services of the most trusted heating and air conditioning contractors in Napa try to turn on their furnace for the first time in the season and cannot rouse their sleeping giant.Before calling Moore Solar, Heating and Cooling, the most skilled heating and air conditioning contractors, try seven simple troubleshooting steps:Verify that you have functional gas service. Don't laugh; not everyone checks the valve on their furnace to ensure that it's turned to the "on" position before calling their heating and air conditioning contractor.Check the thermostat. It should be set on "heat." If it is, and your furnace still doesn't turn on, increase the temperature by a few degrees and wait several minutes. If your thermostat uses batteries, try replacing them.Ensure that the furnace power switch is pointed to the "on" direction. This is no laughing matter because the switch, sometimes located on a nearby wall, can be mistaken for a light switch and turned off by accident.Inspect the pilot light or ignition source, as guided by your furnace owner's manual.Check the circuit breaker dedicated to your furnace: Reset a tripped breaker by flipping it off and then on again.Remove the filter from your furnace and if it's clogged with dust and dirt, replace it with a clean one. That lightweight filter's function is to keep your furnace clean. A filter that is choked with dirt can shut down a furnace.Press the furnace reset button as a last resort. Wait 30 minutes and then press the button again before calling your heating and air conditioning contractors in Napa.In addition to furnace repairs, keep in mind that Moore Solar, Heating and Cooling offers other services, including:Air conditioning installationAir conditioning repairsAir conditioning servicesRemember Moore Solar, Heating and Cooling, the best heating and air conditioning contractors in Napa, for all your HVAC needs. Call 707-387-0265 today for prompt, efficient and friendly service.