While many people in the Myrtle Beach area opt for a heat pump system, there are still plenty of homes that are equipped with a gas furnace. If you think there might be a problem with the operation of your gas furnace, there are some things you can try to troubleshoot the issue before calling for a technician to come out. The exception to this is if you believe you smell a potential gas leak. If you smell a rotten egg or sulfur smell, get everyone out of the home immediately (including pets) and call the fire department.
Here is a list of things you can try to troubleshoot issues with your gas furnace:
1. Make sure your thermostat is set for "Heat". This might sound obvious but in areas with frequent temperature fluctuations, it's not uncommon to forget to switch your thermostat back from cooling to heating functions.
2. If you have a battery-powered thermostat, check to make sure the battery isn't running low and in need of replacing. When the battery dies in this type of thermostat, your HVAC system shuts down.
3. Make sure you set the desired temperature several degrees higher than the current temperature reading. If the desired temperature is too close to the current temperature reading, the furnace might not turn on right away.
4. Check the electrical panel to look for tripped circuit breakers.
5. Make sure the filter in your furnace is a clean, brand new filter. Dirty, clogged filters can restrict airflow significantly and cause the furnace to shut down or not function normally.
6. Make sure the SSU switch on the furnace is set to "ON". This is usually a light gray switch located on or near the furnace.
7. Check to see if there is power going to your furnace. Turn the fan setting to "ON" instead of "AUTO". This should cause the fan to run continuously. If the fan doesn't kick on, there might be an issue with the power going to your furnace.
8. Check out all supply and return vents/registers in your home to make sure none are blocked by furniture, boxes or other items. Blocked registers can cause your furnace to shut down as a safety precaution.
If you've run through this list and your gas furnace is still not functioning or not functioning properly, it's time to call a technician. Make sure you grab the model number and have the list of things you've tried and the results handy when you call Carolina Comfort Systems. Our technicians can use this information to ensure they have everything on hand they might need to fix any issues they might find.