Hvac Grilles

If you specifically talk about a HVAC grille it means a perforated cover for an air duct. Sometimes grilles have louvers which allow the flow of the air to be directed. The main difference between a grille and a register is that it comes with an inclusion of a damper. However, many of the times the terms, “grille”, “registers” and “return” are used interchangeably with one another. Thus one needs to be careful while using the term and its meaning. The main function of an HVAC grille is to supply and extract air vertically without any kind of deflection.

The materials which are commonly used for the making of grilles include aluminum, mild steel, stainless steel, and plastic. Similarly, grilles can have different finishes like white or any other color, brushed, anodized, chrome and many others. Most commonly, both grilles and diffusers are mounted in ceilings, floors, walls, doors, and in ducts. Some of them are mounted horizontally while the others are mounted vertically. Here it must be noted that floor grilles are made especially strong so that they can withstand foot traffic.

Some of the types of grilles which are commonly used comprises the Egg Grate Grille, the Bar Grille, and the Transfer Grille. The function of each of these grilles is different from one another. As has been already mentioned that grille plays an important role in the air flow within the room certain things must be kept in mind while determining the size of the grilles.

• First of all you need to check the supply or the exhaust application as it matters for many of the grilles

• Grilles typically fit into a hole and the custom is to have the grilles a little undercut so that they perfectly fit into the hole.

• The filter grilles that you install should be openable so that you can access them as and when required.

It must be mentioned here that choosing the right kind of grille has a lot to do with the physical space. Experts are of the opinion that installers should have a proper idea as in how much air would be needed in a particular area and how far the air should travel. They should also be aware of the fact as in how much area the air should cover. It is also the duty of the installers to determine whether the grilles should be placed on the floors, at the baseboards, on the walls or on the ceilings. It is important to find out the right place because of the air movement.

Here it must be noted that as heat travels upwards it is better to distribute heated air from grilles closer to the floor. This is because if the heat is distributed closer to the ceiling, the heat will hang higher and will not be able to heat a majority of the space. Hence, in case of heating appliances the return grille should be placed close to the ceiling to collect the stagnant air. While in case of cooling, cool air should be distributed from a high side wall or ceiling diffusers.

Last but not the least, proper placement of the grilles in your HVAC equipment can add to your overall comfort index.



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