You want your furnace to work flawlessly through the winter months. Figuring out problems yourself can save you money in costly repairs or the hassle of being left without heating in the winter. So here are some guidelines and tips to get you going.
Inspect The Thermostat!
Check that the thermostat is set to “heat” mode. (For a test of whether the furnace responds, turn up the thermostat a couple of degrees above room temperature.)
Check the Power Source
Check to make sure the furnace is getting power. Check the circuit breaker hasn’t tripped or plug, and check that the emergency switch, typically found close to the furnace is turned ‘on’
Examine the Air Filter
A dirty or clogged air filter may restrict airflow and can cause the furnace to operate inefficiently or shutdown completely. Clean or replace the filter as needed.
Pay Attention to Odd Noises
Listen for any weird noises coming from the furnace, such as rattling, screeching or banging. Specific sounds can indicate issues with specific components, like the fan or the blower motor.
Look for Issues with Ignition
If your furnace runs on gas, listen to the sound of the ignition. If you can’t hear it, the electrical ignition system or pilot light could be faulty. To solve ignition problems or help you light the pilot light, consult the manual that came with your furnace.
Inspect the Vent Pipe or Flue
Ensure that there are no blockages in the vent pipe or flue, as these can lead to insufficient ventilation and, for safety reasons, shut down the furnace.
Check the Circuit Breaker
If the circuit breaker trips frequently, a problem might exist with the furnace’s electrical system. Reset the breaker, then see if it trips again. If the problem persists, you might have to consult an electrician who is certified, localized.
Verify the Gas Supply
Gas furnaces require a constant pumping of propane or natural gas. Ensure that your valve for the gas line running to your furnace is open and that no gas leaks are occurring. Consult the furnace handbook for valve information.
Find the Error Codes
On many furnaces, error codes are displayed on LED displays when a problem occurs. Refer to your furnace’s owner’s handbook to decode these codes.
Seek Expert Guidance
If you’ve attempted to use these head-in-the-sand troubleshooting techniques but cannot locate or fix the problem, it is advisable to contact a local HVAC specialist. Since they have the wisdom and resources, they can confidently identify and resolve more difficult furnace troubles.
First and foremost, it is crucial that safety always comes first when you are troubleshooting your furnace. If you notice an overwhelming smell of gas, hear strange noises such as a hissing sound, or if you have any doubts about your ability to troubleshoot your furnace safely, evacuate your home and call a professional immediately. Routine maintenance and immediate attention can help you extend the lifespan and efficiency of your furnace.
Preventive Maintenance for Furnaces
If your furnace hasn’t encountered any of these common problems yet, preventative maintenance might allow you to avoid them all together. Get your annual furnace check and service done by a qualified HVAC technician before the winter season sets in. This reduces your long-term energy costs and ensures your furnace runs properly all winter.
What Would Break First In A Furnace?
The parts of a furnace that wears out first are the ignitor and the blower motor. The blower motor circulates warm air around the home.
With time, it may get worse with constant use. In older furnaces with pilot lights, the ignitor may break due to wear and tear. Other potential failure points include the heat exchanger, thermostat and electric components. Regularly monitoring and timely replacing these parts can not only enhance the life of the furnace but can also ensure effective heating in winter.
