How to Replace Furnace Filters?

One of the most important pieces in an HVAC system, but often most forgotten is the filter. Replacing the air filter regularly is the smartest thing homeowner could do it. Filters must be replaced every 2-3 months to maintain your HVAC unit run efficiently. Many costly repairs could be avoided with regular filter changing. Also, replacing your furnace filter regularly will extend the furnace life, improve the indoor air quality and reduce electricity bills.
If you ever had your furnace break down, it will most likely due to a dirty filter. A lack of air flow through the furnace will overheat the system and shut it down. A dirty and clogged filter will keep your system running longer and working harder which will make your energy bills higher. To keep your HVAC system healthy make sure you check your furnace filter every monthly.

Replacing a furnace filter:

1- First of all, check the size of the filter ( the filter size will be written on the top of t the filter) and make sure you will get the correct size. Not all the filters will work with your furnace. For example, if you get a filter that is thicker than the one you have, the furnace might have problems with not getting enough air flow.

2- Before taking out the filter, turn off your furnace by the thermostat or to be extra safe, you can go to your fuse box and turn off the fuse (should be labeled as furnace).

3- Starting by removing the filter, which will be located inside the furnace or inside the return air vent. When removing you will see an arrow indicating the air flow direction. At this time, you can use a marker to draw the airflow direction on the outside of the furnace so you won’t forget which way it goes back in.

4- Put in the new filter, look at the marking you put earlier on the furnace, put in the same way. Take note of when you replaced the filter and remember to replace every 2-3 months. Turn on the furnace and make sure it functions.