Common Furnace Problems & Solutions

When your furnace stops working properly, it can be difficult to stay calm and not overreact. Many furnace problems can be avoided with proper HVAC maintenance in Marietta, GA, while other issues may need some simple repairs by professional HVAC repair companies. In any case, understanding the most common furnace problems and knowing what to do in each situation can help you remain level headed and take the right steps when the problem arises. Here's what you need to know.


Thermostat Issues


A common furnace problem is issues with the thermostat. Sometimes, the first indication of this is when the heater doesn't turn on at all, or when you check the thermostat, it's blank, or the screen is dark. Usually, when this happens, all you need to do is replace the batteries. It's also important to check that the thermostat is in an area that doesn't get direct sunlight or other direct heat. If these causes don't apply, you may need a new thermostat, or you may have a problem with the wiring that requires the help of an expert.


No Ignition


If you notice a clicking sound, but then the furnace doesn't run after all, you have a problem with the ignition. When the thermostat isn't the problem, it could be the pilot light or ignition sensor. You can check the igniter or sensor by removing the front panel and looking to see if it's dirty. In some cases, cleaning it off can solve the problem, but if you're not comfortable dealing with furnaces, it's best to get an HVAC technician because the part may need to be replaced instead of just being cleaned.


Poor Airflow


Weak airflow is often caused by poor maintenance. If the filter hasn't been changed, and your system hasn't been inspected and cleaned regularly, you need to check and change the filter and possibly schedule a professional cleaning. If poor airflow persists, there may be a problem with the blower motor or other components.


Not Turning On


If the furnace doesn't turn on, and you're sure the thermostat is working properly, you'll first want to check the emergency shutoff switch. This is usually located in the same room as the furnace and can easily be bumped or turned off by a child, which cuts all power to the unit. Fortunately, turning the switch back on will immediately solve your problem.


Tripped Breaker


If your furnace constantly trips the breaker or blows a fuse when the system starts up, there's probably an electrical issue that needs to be addressed by a professional. The electrical issue could be something simple like a loose wire, or there may be water contact or other problems within the system.


High Energy Bills


High energy bills can be caused by dirty air filters because of reduced efficiency. However, if you've been vigilant about changing the filters, and still find that your bills are rising, there's another problem with your furnace that's causing the system to work harder to heat your home. It's important to have this problem diagnosed right away before further damage occurs.


Poor Heating


Short cycling, uneven heating, and overall poor heating performance can be indicative of a number of furnace problems. It could be an improperly sized furnace, dirty flame sensor, overheating, or problems with the ducts. The best way to diagnose poor heating performance is to contact a company for residential HVAC in Marietta, GA. Call Shriver Mechanical, Inc. today.