Every cooling and heating system supplies air into the rooms using
ducts and these duct openings are covered by supply grilles. To
maintain the pressure all over the house, return air ducts are used that
recirculate the air or vent it outside. The return air openings are
covered by grilles that are called return air grilles. Return air filter
grilles allow a filter to be mounted inside them to trap particles and
germs thus cleaning the air. The filters often have MERV rating
depending on their ability to trap the particles and germs. The filters
need to be replaced regularly to ensure flow of clean air. Also, when
filters get dirty, it can affect the efficiency of the heating or cooling
system.
How to Install a Return Air Filter Grille
For replacement of filter grille (existing installation)
Step 1 – Sizing the return air filter grille.
The size of the hole is likely to be the same as the size of filters in the
filter grille that you plan to replace.
Alternatively or for new installation, measure the size of the hole in
the wall or ceiling to figure out the filter grille size. The back of the
filter grille frame slides into the hole; therefore, the size of hole needs
to be approximately the same size as the filter grille.
For example, in an approximately 16 inch x 25 inch hole size, the size of
the required filter grille is 16 inch x 25 inch. All Venti Air filter grilles are
described as width x height. Therefore, a 16 x 25 filter grille is 16 inches
wide and 25 inches high. In Venti filter grilles, the opening and closing
latch is always on the width side with one exception. Currently, the
exception is that the 20 inch x 30 inch grille has latches on the 30 inch
side instead of 20 inch wide side.
Step 2 – The filter grille consists of two parts: frame and grille (face).
On the wide side, the grille has latches on the top and take apart hinges
at the bottom. Only the frame needs to be installed after removing the
grille as they come packaged together. If it is a replacement, then after
removing the grille, remove the old frame by removing the
screws. Slide in the new frame and hold it in place using the built-in
tabs. Secure it with screws. Lastly, you can attach the grille (face) to
the frame and you are done. On attachment, the latches will go on the
top and take apart hinges at the bottom.
Step 3 – If it is a new installation, then we recommend the use of a
trained and licensed HVAC technician. This process can require
identifying the proper location for the filter grille, cutting the sheet rock
to correct size and securing the hole, removing insulation, etc., so that
the filter frame can be installed properly.
To change the filter, you can access the following link from wikiHow
https://www.wikihow.com/Change-a-Home-Air-Filter
Above instructions are property of Venti Air Products and copyright has been applied. They cannot be
used or copied for any other purpose except for the installation from Venti Air products, without the
express and written permission of Venti Air Products.
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