An HVAC return air filter catches particles that would otherwise be let loose into the air by an airflow machine and prevents those particles from being released into the air. A return air filter keeps dust and debris out of an HVAC system and functioning properly. Air has to pass through an HVAC unit for it to properly heat and cool a house.
Some return air filters are made of steel or aluminium, and some are made of cloth, fibreglass, synthetic fibers or even vinyl. One of the most important things to look at is the manufacturing process used to filter itself. Steel construction is generally better than cloth construction. Aluminium construction results in the most efficient use of energy in heating or cooling a room. Fabric or fibreglass construction results in the least amount of waste of energy.
When looking at the physical makeup of a return air filter, one should examine it closely for any scratches or dents that might be a part of the manufacturing process. The size of the opening to place the filter itself is another thing to watch for. Many different sizes are available. Be sure to get the right size so the filter can work properly and effectively in your HVAC system. Another point to watch for is whether there are small holes on the fabric or aluminium of the return air filter.
Return air filters are typically made with steel or aluminium which is stronger than cloth or fibreglass construction. It will also be more comfortable for an HVAC system to remove the air filters once they are replaced than if they were made with fabric or fibreglass. Having an HVAC system that eliminates the return air filter quickly makes it much easier to clean. If the air conditioning filter is too difficult to remove, it will reduce the cooling or heating system’s efficiency as a whole.
There are several different sizes of return duct filters and other ways to replace the filters as needed. The most common way to replace the filters is to pull them out and discard them. However, some systems will have a pull tab or snap on the filter so that you can easily remove them without disturbing the HVAC system as you do so.
When looking at the physical construction of return ducts, you should keep in mind that although they may be less noticeable to some, they still help regulate the home’s air pressure. As such, these air filters work to keep air quality levels high regardless of whether you are living in a warm or cool area. They work by removing contaminants, dust, mould, bacteria and other harmful substances from the air. An effective air conditioning system in the home can mean the difference between breathing low quality or better quality air.