Ducted Air Conditioning Accessories - Air Return Vents, Grilles & Zone Controllers

CONTACT US NOW  Brisbane (07) 3219 1817   sales@lawsonair.com.au   |  Sydney (02) 9188 6877   sydney@lawsonair.com.au

Air conditioning accessories are an essential group of products that should be considered for pre-existing or new air conditioner installations. We at Lawson Air both supply and install a range of Aircon accessories for air conditioners.


Our range of accessories is supplied by trusted brands. The accessory ranges available on our website are all of a high-quality standard whilst also maintaining a low price.


Air return vents are vents that allow air that is already in your home to go back into the system. This relocated air will then be either heated or cooled depending on the household’s temperature requirements, before being released back into the house. This process of returning air will help maintain the desired temperature within the household, as the air inside the house will be able to be conditioned through the use of air return vents.


Duct diffusers are using to reduce the velocity of fluid passing through the system while also increasing the fluid’s static pressure. In HVAC systems, the diffuser helps deliver and spread conditioned air throughout an area, rather than a straight direction from a vent. Generally, duct diffusers come with fins to better control which direction the conditioned air flows.


A grille is a perforated cover for an air duct (used for heating, cooling, or ventilation, or a combination thereof). Grilles sometimes have louvres which allow the flow of air to be directed. The process of distributing heated or cooled air throughout your home should be a seamless process with the right grille or diffuser to ensure optimum airflow performance.


Depending on your application, at home or commercial different grille options are available. For large open areas such as living areas, the most common grilles are Circular or Four-Way grilles. For a “high end” look, linear grilles are an option but usually come at an extra cost. For a commercial application such as offices, reception areas or schools the Bevel Face or Jet Blower grille are regularly used.

If you have a smaller area to cool or heat, again the use of the Circular, Four Way or Linear are all good options. Generally, price-driven on what look you want throughout your home.


The information below will showcase the types of different grilles and the way they look within the interior of your space. Our team will provide you with the best professional advice and will help you decide on the correct grille for your application considering the look, the size, and the required airflow for your application.

Choose from the following selection: 

Round grille allows for smooth quiet airflow that flows out in a concentric pattern across the ceiling, to provide good coverage in cooling and most heating applications. It is fully adjustable by rotating the centre cone from total shutoff to fully open.

Linear slot grille can be installed individually in set lengths or a continuous line. They can also be installed in any type of ceiling application.

Linear bar grille is Extremely versatile and can be mounted in the wall, sill, floor or ceiling.


4 Way grille is ideal for use in all fixed/adjustable applications as the increased holding force maintains the louvres in the desired position even in a strong airflow.

Double deflection bar grille is used to direct the air in a straight blow or spread the air as required by the room layout. If required, air can be directed at an angle to one or both sides, and still retain a near parallel air stream pattern.

Jet blower is used extensively in large areas and high ceiling applications such as Sports Centres, Airports, Entertainment Complexes, Shopping Centres and Industrial areas.



Bevel face grille is used in surface mount ceiling applications where minimum ceiling smudging is required.

Floor Register grille suits all ducted underfloor heating and cooling systems.

Return air egg crate grille is normally used in ceiling return air and exhaust applications. Can be ceiling or wall-mounted and is available with or without a filter.


Ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. The needed airflows include, for example, supply air, return air, and exhaust air. Ducts commonly also deliver ventilation air as part of the supply air. As such, air ducts are one method of ensuring acceptable indoor air quality as well as thermal comfort. Flexible duct is insulated and rated R1. 

CONTACT US NOW  Brisbane (07) 3219 1817   sales@lawsonair.com.au   |  Sydney (02) 9188 6877   sydney@lawsonair.com.au


Air Conditioners work to cool or warm your home, creating a comfortable living environment by filtering the air and removing the moisture which causes humidity. Zoning your new ducted air conditioning system will mean that everyone can enjoy their own temperature setting and airflow, and you can save on energy and running costs by turning off the airflow for rooms not in use.

Without zoning technology, a central air conditioning unit cools or heats the entire house, which means that every room receives the same airflow, regardless of room size, how many people are using (or not using) that room, the sun hitting one side of the house, or most importantly, everyone’s individual choices for the temperature. 

Zoning lets you have different volumes of conditioned air in different areas of your home, and lets you turn off the air in areas you are not using. Zoning can help maximise energy efficiency and comfort by specifically targeting heating and cooling.


CONTACT US NOW  Brisbane (07) 3219 1817   sales@lawsonair.com.au   |  Sydney (02) 9188 6877   sydney@lawsonair.com.au


When it comes to ducted air conditioning accessories, Lawson Air can provide you with high-quality products at a competitive price. Contact us now to browse our extensive catalogue of accessories available for ducted systems.