How Often To Replace Furnace Filter Reddit. Every 3 months is usually when i replace mine, depends on the filter and how dirty it is. I looked at the details around what they filter and then chose a cheaper brand that does the same level of filtering that the higher end brands do.
I too have been told by an hvac guy to buy the cheap filters and replace every 3 months. Your hvac system is one of the only methods of moving air inside of your home. Replace or clean your furnace air filter regularly and fit it properly.
A reusable filter is often made from durable materials that last longer than disposable air filters.
He told me the expensive filters are actually bad for your furnace because they make it work harder. Consider the location of your hvac unit relative to air vents. Even personal factors like your allergies will play a large role in how often your furnace filter needs to be changed. I use the subscribe option to automatically mail them out so that i don't forget to change it.