The general recommendation is that oven filters should be replaced at least once every 90 days. But how often do homeowners need to change their air filters to get the full benefits? It really depends on the house and personal preferences. However, as a rule, because 20x25x5 air filters are stronger than most air filters, most homeowners only use two to three 20x25x5 air filters a year. Compared to one-inch air filters that need to be changed monthly, 20x25x5 air filters require extremely low maintenance.During a remodeling project, it's best to change the furnace filter every 30 days, or even more frequently, to prevent building-related dust from circulating around the house.
If you answer yes to any of the following questions, you'll want to replace the filter more often than recommended: Do you have pets? Do you have allergies? Is your heater fan constantly on?At the peak of summer and winter, air filters need to be changed more often than necessary during spring, autumn and milder months. Replacing the air filter helps reduce pet dander, lots of dust creates good air quality, removes excess dust and is an important part of maintaining your home's air hepasystem system. One of the most important things you can do on your own to take good care of your HVAC system is to simply change your air filter on a regular basis. The filters are designed to trap dust and airborne particles as the air passes through the filter into the furnace system.Considering the factors that influence the air quality inside your home is a good measure of how often oven filters should be replaced.
If someone in your household has allergies, you will benefit from more frequent air filter changes. The higher the MERV ratings, the more effective the filter will not allow air particles to pass through it. If your heater fan is constantly on, you will have to change the filter every month; having it turned on will sometimes be every two months and never having it turned on can be every three months.The surface area of the filter determines how quickly it becomes clogged and coarser filters may be better for airborne particles and pet hair. The filter manufacturer provides the recommended replacement frequency in the product information included when purchasing a new filter.
