Air Conditioning 101: What Do the AC Grills Do?

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An HVAC system is composed of numerous parts and components that you may not think about frequently. Besides the usual coils, compressors, capacitors, and fans, HVAC systems also include the components in the ductwork. One of these components is the air conditioner grill, which is responsible for airflow around the system. 

What are Air Conditioner Grills?

The air conditioner grill is the part of the HVAC system that delivers cold or warm air into the room. These grills are typically located right on the opening of the ductwork, and acts like a gate to prevent large debris, pests, and sometimes dust from entering the room or the ducts. 

AC grills are common with central heating systems as warm air travels throughout the house. The return air vent may also have AC grills, but is responsible for drawing stale air out of the space instead. Centralized cooling units also use AC grills, which are important for ventilation and airflow circulation around the room. 

AC grills conceal the duct opening, and can be located on the floor, on the wall, or on the ceiling, depending on the ductwork. Most centralized HVAC systems have vents, grilles, and registers that include air filter screens to block dust from entering the room.

The Importance of an Air Conditioner Grill

AC grills are important to ducted air conditioning systems. They act as vent covers to prevent dust, debris, and more importantly - pests, from entering or exiting the vents. At the same time, these grills redirect the airflow into the room through angle slats that determine where the air should pass through to circulate around the space. 

The return air grille is important for the exhaust of stale air from the room. Where the vent covers direct air into the room, the return air vent covers direct air out of the room, maintaining a comfortable temperature within the entire space.

Problems with AC Grills

#1 Dusty Grills

One of the most common problems you may encounter with vent covers is dust. Dust is everywhere, and with the AC system blowing air around the space, dust can easily get trapped in the AC grills. Cleaning is relatively simple, particularly if you have washable vents and air filters. Simply wash these with soap and water, then allow them to dry before using.

#2 Unaligned Grills

Improper installation can cause AC grills to become misaligned with the vent opening. Some grills may become misaligned as it moves with the vibration of the HVAC system. In any case, securing the vent cover back in place should fix the problem, and ensure that the grills work properly to redirect air into the room.

#3 Broken Slats

Broken slats are not heavily damaging to your HVAC unit, but they can disrupt the airflow, and allow critters to squeeze into your ductwork. Have the broken grills replaced with similar models, or models with the same shape to fix the problem. You can find a huge selection of AC grills online, or at your local home improvement store.

How to Maintain Air Conditioner Grills

AC grill maintenance is relatively simple: the vent covers just need routine cleaning and washing every now and then. Most ducted heating and cooling systems require professional cleaning, maintenance, and repairs for upkeep, so finding a reputable air conditioner service company is important in keeping the unit in good shape.

Look no further than Luce Aircon for all your HVAC needs. Our experienced technicians are highly-trained to clean and maintain various types of air conditioning systems, as well as the different components in each system. Our technicians will be able to maintain your air conditioning grills, and help you create a maintenance routine for your entire HVAC unit.

Give us a call, and let's get to keeping your HVAC unit in mint condition!

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