It's important to keep your furnace filter clean and up-to-date in order to ensure that your HVAC system runs smoothly and efficiently. But how often should you change your furnace filter? The answer depends on a few factors, including the type of filter you have and the size of your HVAC system. The type of filter you have is determined by its MERV rating. MERV stands for Minimum Efficiency Report Value, and it measures the effectiveness of the filter in trapping air particles.
The higher the MERV rating, the more effective the filter is at trapping particles. Generally, the MERV rating also determines how often you should change your furnace filter. For example, if you have a MERV 8 filter, it should be replaced every 3-4 months. MERV 10 and 11 filters should be changed every 6 months, and MERV 16 filters should be changed every year.
It's also a good idea to check your filter visually every 3-4 weeks if you're not sure how often to replace it. If you have pets in your home, you may need to change your filter more frequently. For a one- or two-inch filter, it should be changed every two months; for a four-inch filter, every four months; and for a five-inch filter, every six months. When it comes to finding the right size of furnace filter for your HVAC system, it's important to get an exact measurement.
There are many common sizes available, so make sure you get the right one for your system. If your existing furnace filter is 1 inch thick, a four inch filter won't fit without having to modify the opening of your air conditioning setup. It's also important to note that the cost of furnace filters can vary depending on the material and size. So make sure to do some research before buying one. In conclusion, it's important to keep up with changing your furnace filter in order to keep your HVAC system running smoothly and efficiently. The frequency of replacement depends on the type of filter you have and the size of your HVAC system.
Make sure to check your filter visually every 3-4 weeks if you're not sure how often to replace it.
