Furnace Checklist if it goes out
A furnace failure can be a stressful situation, especially during the colder months. Before you panic, there are several steps you can take to troubleshoot the issue. This guide from One Hour Magic will walk you through what to check if your furnace goes out, helping you determine whether it’s something you can fix yourself or if it’s time to call in a professional.
Check the Thermostat Settings
The first thing to check when your furnace stops working is the thermostat. Ensure that it’s set to “Heat” and that the temperature is set higher than the current room temperature. Sometimes, thermostats can be accidentally switched to the “Off” or “Cool” setting, which could be the cause of the problem. Additionally, make sure the thermostat is working properly by replacing the batteries if necessary.
Inspect the Circuit Breaker
If your furnace isn’t turning on at all, it could be due to a tripped circuit breaker. Locate your home’s electrical panel and check if the breaker for your furnace has tripped. If it has, reset it by flipping the switch back to the “On” position. However, if the breaker trips again, there might be a deeper electrical issue, and you should contact a professional to avoid further complications.
Check the Furnace Filter
A dirty or clogged furnace filter can cause your system to shut down. When airflow is restricted due to a dirty filter, the furnace may overheat and automatically shut off to protect itself. Check your filter and replace it if it’s dirty. Regularly replacing the furnace filter—every 1 to 3 months—is a simple yet effective way to keep your furnace running efficiently.
Examine the Furnace Switch
Many furnaces have a switch that looks similar to a light switch located near the unit. This switch controls the power to the furnace. If someone accidentally flips the switch off, your furnace won’t work. Ensure that the switch is in the “On” position. It’s a simple check, but it can save you the hassle of an unnecessary service call.
Look for Error Codes on the Furnace
Modern furnaces often have an indicator light that shows error codes when there’s a problem. These codes can give you a clue about what’s wrong with the system. Check your furnace’s manual to interpret the codes. If you’re unsure what the code means or how to fix the issue, it’s best to call a professional technician for help.
Inspect the Pilot Light or Ignition System
If you have an older furnace with a pilot light, check to see if the light is still lit. If the pilot light is out, try relighting it according to the manufacturer’s instructions. For newer furnaces with electronic ignition, listen for a clicking sound, which indicates the ignition system is trying to light the burners. If you don’t hear this sound, or if the pilot won’t stay lit, there could be a problem with the ignition system that requires professional attention.
Check the Gas Supply
Ensure that the gas valve to the furnace is open. If the valve is closed, the furnace won’t receive the gas it needs to operate. Additionally, check other gas appliances in your home to see if they’re working. If none of them are receiving gas, you may need to contact your gas company to resolve the issue.
Inspect the Air Vents
Blocked or closed air vents can cause your furnace to overheat and shut down. Walk through your home and ensure that all air vents are open and unobstructed. This allows for proper airflow throughout your home, helping your furnace operate efficiently.
Look for Signs of Overheating
If your furnace shuts off unexpectedly, it may have overheated. Overheating can be caused by dirty filters, blocked vents, or a malfunctioning blower motor. If you suspect overheating, turn off the furnace and let it cool down before attempting to restart it. If the problem persists, it’s time to call in a professional.
Call a Professional Technician
If you’ve gone through these checks and your furnace still isn’t working, it’s time to call a professional technician. Furnaces are complex systems, and some issues require the expertise of a trained HVAC professional to diagnose and repair. Don’t risk further damage or safety hazards by attempting to fix complicated problems yourself.
Final Thoughts
While it’s frustrating when your furnace goes out, taking these steps can help you quickly identify and potentially resolve the issue. However, if you’re ever in doubt, don’t hesitate to reach out to the experts at One Hour Magic. If your furnace needs repair, our team is always ready to help you get your furnace back up and running, ensuring your home stays warm and comfortable.
Remember, regular maintenance is key to preventing unexpected furnace failures. Schedule a routine maintenance check with One Hour Magic today to keep your furnace in peak condition and avoid the stress of a breakdown.