How do air grilles and air diffusers work?

What are air grilles and air diffusers and how do they work?

In a heating and cooling system, the central furnace or air conditioner pushes air out through a system of ducts, air grilles and diffusers into the rooms for temperature control. Not only that, air is also pulled in through return ductwork. The air sucked into the system is heated or cooled as needed and redistributed. Basically, it is the process of circulating air through a heating or cooling chamber in order to create a stable and consistent temperature. Air grilles and diffusers are used to connect the ductwork with the surface of a room, via a wall, ceiling or floor.

An air grille is a device for supplying or extracting air vertically without any deflection. An air diffuser is a device which normally has profiled blades to direct the air at an angle as it leaves the unit.

The goal of air grilles and diffusers is to maintain comfort for people living in a house or building. These grilles and diffusers are mainly used for eliminating moisture condensation. Good air grilles and diffusers also make sure that air can easily circulate in and out of the ductwork.

Grilles and diffusers can be manufactured in:

- Aluminium

- Mild steel

- Stainless steel

- Plastic

Air grilles and air diffusers may be mounted in ceilings, floors, walls and doors. Some are suitable for horizontal or vertical mounting while floors grilles tend to be especially strong to withstand foot traffic.

Common types of grille and diffuser

There are several types of air grille and air diffuser to choose from. For example, Egg Crate Grille, Bar grille, Transfer grille and Louvre bladed diffuser. The size of an air grille and air diffuser varies and is calculated to suit your requirements. It can either be one air grille located in one area of the house or multiple return air grilles in either the same location or different locations. Depending on the purpose, they can be mounted in the ceiling, walls or on the floors.

Here are some air grilles and air diffusers:

Egg Crate Grille: The Egg Crate Grille is probably one of the simplest and cheapest grilles. If air is to be removed by an extract ventilation system then a diffuser with profiled blades to direct the air is not necessary. The Egg Grate Grille is used mainly for walls and ceilings; however, they can vary in sizes and purposes. The filter has an aluminium frame with filter cloth. This can be washed but may need replacing at a later date.

Bar Grille: The blades of this type of grille are shaped as a bar as opposed to a narrow blade. The bar profile may be 'T' shaped to reduce 'see through' visibility. Some linear bar grilles have adjustable blades or angled blades to reduce 'see through'.

Transfer Grille: It is often used in doors and walls to provide ventilation but stop the spread of smoke and fire should it occur. An intumescent fire damper is incorporated into some Transfer grilles as a means of insulation in the event of a fire.

Non-Vision Grilles: Non vision grilles are manufactured with a fixed inverted V profile to provide a vision proof air transfer grille. Non vision grille is available as a single unit or with matching flange. They are extensively used for providing free air flow and are appreciated for their capability to withstand heavy usage. They also prevent through-vision.

Louvre Bladed Diffuser: It is used to supply air at ceiling level. The curved blades deflect air in one, two, three or four directions depending on where the diffuser is situated. Diffusers may also be circular.

Choosing an appropriate grille or diffuser

A very common mistake made by people who are looking to buy an air grille or diffuser is that they measure the outer dimensions instead of the inner dimensions. Keep in mind that you always have to measure the inner dimensions. They are the dimensions of the ducts or the fitting holes. There are significant differences between the outer dimensions of a grille or diffuser and the inner ones.

If you care about the quality of the products, you should consider choosing great quality products from Just Ventilation. They have most common types of air grilles and air diffusers and everything related to air conditioning and heating. Running business since 2004, Just Ventilation have grown strongly and become one of the best Australia-wide suppliers of ventilation products. They sell quality products, have a big range, great value and deliver exceptional service every time; making it easy to buy better. They work with some of the biggest names in the field, such as Blauberg, Airware, Heller, DraftStopper and Kilargo, so whatever it is that you need, you'll find it here.

Business Info:

Just Ventilation

Address: 2 Dunlop St, North Parramatta NSW 2151

Phone:1300 998 326

Website: justventilation.com.au