Possible Causes For A Broken Furnace

Lifetime'z Heating & Air Conditioning > Blog > Possible Causes For A Broken Furnace

A furnace is an efficient heating appliance to keep us warm during winter. The heating efficiency and overall expenditures of a furnace are less than that of other appliances, making it the first choice for homeowners. 

As the owner of the furnace, you should contact our technician for furnace repair in Carrollton, TX, if your furnace troubles you. Ignoring furnace problems can lead to more expensive and troublesome repair jobs in the future.

Reasons Why Your Furnace Won’t Turn On

All HVAC problems have one or more reasons behind them. Similarly, if your furnace is not working, there can be several reasons behind it. You should know those reasons to avoid them and to ensure that your furnace does not stop working later on:

  • Leakages in The Gas Line

If your gas furnace is not switching on, the first reason could be blockages or leakages in the gas line. Check the gas line of your furnace for leakages. Contact our technician for furnace repair services in Carrollton, TX, if you find leakages or weak connections. You should not try to fix gas leakages yourself.

  • A Malfunctioning Thermostat

A thermostat has detectors to instruct the furnace on the right temperature. If the thermostat malfunctions, your furnace will get the wrong instructions and may stop heating. In such cases, a smart thermostat is the best option for furnace owners. Contact our technician about the options available for a smart thermostat.

  • Clogged Air Filters

Air filters ensure no dust enters the system. Dust can damage the internal components of the furnace. However, if the air filters are too dirty to work efficiently, dust will enter the system, and the damage can lead to a temporary breakdown. Ensure you replace the air filters at least once a month to avoid this issue.

  • A Malfunctioning Ignitor

All furnaces have igniters that begin combustion by lighting the gas entering the system. If the ignitor is too dirty or broken, it will not light the gas, and your furnace will not generate warm air for your home. Contact our technician, who provides water heater repair in Carrollton, TX, to check the ignitor.

  • Dirty Gas Burners

Like the ignitor, the gas burners burn the entering gas for enough warm air for your home. If the gas burners have soot or dirt on them, they will not burn the gas efficiently, leading to high carbon monoxide generation. Your furnace may stop functioning to avoid too much carbon monoxide gas in the furnace.

  • A Malfunctioning Flame Sensor

The flame sensor determines whether the gas burners and ignitor should continue burning the gas. If it does not work efficiently, the combustion may stop, and your furnace will stop working.


If you want high-quality HVAC services at reasonable expenses with the latest gadgets, Lifetime’z is your best option. We maintain complete transparency and honesty with our customers to gain their trust.

Book an appointment with us at 972-521-4578 or [email protected]. In addition to furnace service, we also perform water heater repair services in Carrollton, TX, and the surrounding areas.

Get a Quote