How Many HVAC Filters Do You Need? A Comprehensive Guide

When it comes to air conditioning systems, the number of filters you require depends on the size of your home and the number of floors your central air system needs to support. Generally, a house will have two air filters in the intake grilles, but larger dwellings may have more than one air conditioning system, each with its own filter. It is essential to check every possible location to make sure you have identified all of your filters. Typically, air filters are placed near the boiler or the air conditioning system controller and the return ventilation grilles.

However, some HVAC units can be more difficult to locate than others. If you are interested in buying HEPA filters for your home, an HVAC contractor will need to make the modifications. Reusable filters are also an option. These are washable filters that can simply be cleaned and reused. This type of filter is usually more expensive than the disposable one and has a low MERV index, between one and four.

This makes reusable air filters prone to mold or mildew formation. In conclusion, it is important to know how many HVAC filters you need for your home. The general rule is one filter for each air controller, but larger homes with multiple HVAC systems may have more than one filter installed. Make sure to check every possible location to guarantee you have found all of your filters.

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