When it comes to air filters, the general rule of thumb is that the thicker the filter, the longer it will last. Most HVAC technicians suggest changing 1-inch air filters every 30 days, while 4-inch filters can be changed every 3 to 6 months. This is because 4-inch filters have larger creases and more square feet to capture and retain air particles. Thicker air filters may seem better at first glance, as they offer more filtration.
However, it is important to consider the MERV rating of the filter as well. A one-inch air filter with a high MERV rating will clog up quickly and need to be replaced sooner than a coarser filter. If the filter is too thick for your system, it can impede and restrict airflow. In households without indoor air quality equipment, such as air purifiers and air filters, the oven filter is the only line of defense against airborne contaminants.
As a result, the filter fills up faster and needs to be changed more often. Pet owners should also take into account how much their pet sheds or how many pets they have when considering changing their filter. To sum up, if it fits your oven, a 4-inch air filter is better than a 1-inch one to improve air quality. Combining a thin air filter with a high MERV rate can also restrict airflow to the point of hampering efficiency and causing excessive wear and tear on your HVAC system. When selecting an air filter for your home, it is important to consider both the thickness of the filter and its MERV rating.
A thicker filter with a low MERV rating may not be as effective as a thinner filter with a higher MERV rating. Additionally, if you have pets or live in an area with high levels of airborne contaminants, you may need to change your filter more often than recommended. Overall, 4-inch air filters are better than 1-inch ones when it comes to improving indoor air quality. However, it is important to consider both the thickness of the filter and its MERV rating when selecting an air filter for your home.
