Are Your Furnace Filter Is Working Fine?

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by Jim Brown1

When it comes to heating and cooling elements within a home, the most frequently asked question happens to be, "In which part is the furnace filter located?" You may find it difficult to locate the filter in times of need, especially when you feel like changing out the filter - either on moving into a brand new home, or even when you have lived in a house for a few years. You know very well that the filter is in there somewhere as there is one for every heating and cooling system in a home. Your inability in finding it might just frustrate you a bit too much.

In all probability, your furnace filter may be located somewhere close to the location of fan. This condition is applicable to all different types of heating furnaces - including gas, oil and electric furnaces - as well as air conditioners. It is surprising that even individuals who working for years in the HVAC industry sometimes find it difficult to locate the tricky hidden filters, but the fact is that they are always there somewhere, for sure!

In order to keep them shielded from view completely, furnace filters are commonly placed behind panels, inside the opening of a duct or even behind some other equipment. Originally, the purpose behind filters was mainly to prevent components form getting damaged in case they got into the fan section of the furnace. For this reason, they can be placed practically anywhere, so long as, to a certain degree, they are upstream of the fan. For the installation of filters, the usual location preference of most manufacturers is generally just in front of the components of the fan.

Quite often, filters are located somewhere within the duct system - at some place that is upstream of the location of the air handler. This location of the furnace filter is common in case of older systems of heating and air conditioning. For actually locating the filter the best way to start is from the location of the air handler, and gradually moving backwards, because the filter can be just about anywhere around there. At times, it may be located at the return air grill opening, or otherwise, right behind the return air grill itself.

After figuring out the duct, which is the furnace return duct, you are well on your way to locate the filter. The return duct is the place at which the grill opening draws air into it. Possibly, the furnace filter will be somewhere close to this opening, most likely, between this opening and the air handler.

In one of the rare cases, there is a possibility that no furnace filter was installed at the time of the original installation of the entire unit. Along with never being installed in the first place, there is also a chance that the filter may have been removed and not replaced. In such a case, it is better to have your furnace officially examined, to ensure complete safety. In the absence of a filter, the airflow in your furnace would definitely be very poor, which can be a cause of concern. Moreover, in this kind of a situation, your heating and cooling equipment can be rendered inefficient to a large extent.

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