Wall Mounted Air Conditioners vs. Central Air Systems

There are a lot of different air conditioning systems available today. Two of the most popular ones are the room ACs and the central air conditioners.

Room air conditioning (they come as through the wall air conditioner units or or window air conditioner units) is the kind that will only cool a specific amount of space. They are generally mounted on the wall or in a window.

One of the benefits of wall mounted air conditioners is that they can be plugged right into your electrical outlet in whatever room you put them in. They also require minimal hassle in terms of installation.

Window ACs are single units, and they’re self-sustaining. They remove the heat and the humidity from the room and push it outside. They work quite similar to car air conditioners, and carry a specific capacity of cool air cooling capability, usually measured in square footage.

A good example would if you were to purchase one that you wanted to have cool the whole downstairs, then you would need one with the capacity of cooling that much square footage. However, if you were to close off any of those rooms, then those areas would not be cooled by that unit. They could get very hot.

It would be the same for your upstairs. Because hot air rises, the heat that was downstairs is now going to be upstairs. These wall units don’t take any hot air away from the home so it can be recirculated and turned into cool air. What they do is to grab hot air from outside and then cool that air and circulate it through the house.

The way central air cools down the house, is by circulating air along ducts inside your home. The hot air gets pulled through these ducts and transformed into cool air. After the air gets cold, then it gets pumped back through the ducts and is used for cooling. Duct systems are set up on a basic system known as ‘supply and return’.

The air will continue to be circulated through your system so it will reach the desired temperature inside your house. You home will reach one solid steady temperature, and your central air unit will continuously work to maintain it.

Both types of air conditioning have their own set of pros and cons.

Central Air Units –


Central air cools down the entire house by using a thermostat. Your air quality improves and you will be able to control it. There are filters within the system as well, that remove pollutants and allergens from the air.

Central air is very easy to operate, and doesn’t take up space within the home, or block your view out of the windows.

A Central Air System is very efficient and can save lots of money.

They are also very quiet.

You don’t have to handle your own repairs. New installations always carry warranties for parts and services. You simply call a technician, and they will come out and service it for you.


If you fail to keep up the maintenance on your system, you could be breathing in dangerous and harmful toxins, allergens, and pollutants.

Installing a new system can take a lot of time and money. This depends, of course, on what size unit you need to get your house cooled properly.

Outside units face the possibility of potential damage from extreme storms and weather conditions. Trees and shrubs that are overgrown can spring up and cause damage to your unit. They can have a negative impact on how well your unit performs.

Should your system break down and need repaired, it would be left up to you to fix it, which could use up lots of time, lots of money, and put you through lots of headaches.

Window/Wall Units –


It will probably only require one unit to get your downstairs cool. These units are easily installed and very easy to remove and put away for storage.

They are inexpensive and very practical for those people who are on a tight budget.


When you close the doors to specific rooms, they can become extremely hot. You will notice that as you go upstairs you begin to sweat. That only means you could probably benefit from a one or two more units. However, more units mean a higher energy bill.

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