Gas Furnace Troubleshooting

Gas furnace troubleshooting

The most common problems with furnaces are:

<ul class="i8Z77e"><li class="TrT0Xe">Dirty ductwork.</li><li class="TrT0Xe">Old filters.</li><li class="TrT0Xe">Faulty starting mechanism.</li><li class="TrT0Xe">Broken blower components.</li><li class="TrT0Xe">Malfunctioning heat exchanger.</li><li class="TrT0Xe">Bad Limit Switch.</li><li class="TrT0Xe">Thermostat in need of repair.</li><li class="TrT0Xe">Tripped circuit breaker.</li></ul>

What would cause a furnace not to kick on?

If your furnace is not turning on you should first check if the filter is clean. Dirty filters cause insufficient airflow and can prevent the furnace from starting. Other reasons it won't start can stem from improper thermostat settings, forgetting to turn on the gas line, or faulty pilot light.

10 Gas furnace troubleshooting Images