A Simple Guide to Air Conditioner Vents

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The air conditioning in your home is one of the most important aspects of your cooling system. After all, it’s the duct that transports all of the cool air from your AC unit to the rest of your home. It’s very common for people to get confused about what their AC does.  Unfortunately, with a lot of misinformation across the board, it can be fairly tricky to tell whether or not you should be keeping your vents open or closed. This guide should give you the information you need to ensure you are well aware of how your air conditioning system functions.

What Is the Vent For?

The primary purpose of an AC vent is to maintain the air pressure throughout your office or home effectively. These smaller-sized openings work to preserve the quality of air throughout your home by filtering out some of the dust and other debris that can end up getting into and being dispersed into it. By installing these vents into your walls and ceilings, it can end up saving you a lot of time, energy, money in the future.

Is My Vent Open or Closed?

The vents for your AC unit should be kept open at all times. You don’t want to close these vents because it could negatively impact the function of your AC unit. Also, the benefits that come with keeping your vents open far outweigh the downsides. You will want to monitor whether or not keeping your vents open closely is impacting your heating and cooling bill to figure out whether or not you could be saving money.

The majority of AC systems are designed in a way that is meant for cooling the size of space in either your home or office. That way, you will be able to get everything properly cooled throughout the entire space. When you close one of the vents for your system, it could negatively impact your system’s performance, resulting in a lack of cooling efficiency because of it.

By closing the vents for your AC system in your home, you will not directly save money on your cooling bill. Many assume this, but it’s not true. The main way you want to save money on energy costs is by effectively maintaining a consistent temperature at all times. Ideally, you should try to keep your home at 78 degrees. Having a system that keeps your temperature at this spot will save you the most. Also, you should be doing routine maintenance on the system to keep it functioning properly.

What Happens When the Vents Get Blocked?

When you find yourself blocking a supply vent, your air isn’t going to get shut off automatically. Instead, the system will continue to push out air against the vent that’s being blocked. The consistent air being pushed against the blocked vent is likely to increase the air pressure and minimise airflow. Both of these factors can end up resulting in significant damages to your AC system over time.

Dealing with a malfunctioning and damaged air conditioning system is likely to lead to carbon monoxide release due to having leaks in the ductwork. These damages can add up and increase energy bills due to the lack of efficiency in cooling.

How Do I Know If the Vents Are Clogged?

One of the most common signs of clogged vents is dealing with major fluctuations in your home or office’s temperature. If you find that the airflow is only being affected in a couple of rooms, it means that you are likely dealing with clogs in both of them.

To test this out, you should look to turn the AC on. Whenever the fan turns on, you want to check the vents in the different rooms to figure out whether or not sufficient air is flowing through them. From there, you’ll check each vent to see whether or not they are clogged.

If you don’t detect a blockage, you can check the air filter. When you have a clogged air filter, it can negatively impact the airflow throughout the entirety of your system. If you want to check to see if your air filter is causing the blockages, you can remove it to see if it solves the problem.


Hopefully, you have found all of this information informative and helpful. If you did, we would love to hear more from you. You can contact us if you ever find yourself needing professional AC vent installation, maintenance, or other services.

Related read: Essential guide to aircon parts.

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