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Do Air Conditioners Pull Air from Outside?

Do air conditioners take in air from outside? In this blog post, we will explore how air conditioner (AC) units work and whether they can improve indoor air quality. We will also answer the question: Can air conditioners bring fresh oxygen inside? 

Let’s get started with this blog!

Air Conditioners Do Not Take Air from Outside

Most homeowners are often left scratching their heads, wondering how air conditioners work. Generally, these units do not bring in fresh air from the outside. Instead, they reduce the temperature of the ambient room air, ensuring a cooler climate inside the room. 

Some air conditioners have heating and cooling capabilities, enabling homeowners to keep their homes cool in the summer and warm during the winter.

How Do Air Conditioners Work?

If you’re wondering how air conditioners work, here are the key steps involved:

Step 1: Remove Hot Air from the Room 

The main component that is responsible for removing unwanted heat from your home is the air conditioner’s compressor. Also referred to as an air conditioner pump, this unit helps draw heat out of your house during the summer. 

With the help of a special fluid known as refrigerant, an air conditioner’s compressor works as an effective medium of transportation for moving heat out of your home. 

In some systems, you will find a heat pump instead of a condenser. It works the same way by drawing the heat out of your room and lowering the temperature. However, during winter, it brings thermal energy back into the living space, warming it up for a cozy setting.

Step 2: Reduce the Heat in the Environment

Since air conditioners do not bring fresh air from the outside, they use the compressor to transform the existing hot air through the process of refrigeration, creating a cool indoor environment. 

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There are four crucial steps that you should know, and these include the following: 

  1. The air conditioner’s blower draws hot air from the living space into the AC unit. 
  2. During the refrigeration process, the refrigerant gets hot due to all of the heat absorption inside the metal loops. 
  3. The air conditioner pushes the refrigerant outside to the condenser unit, causing hot air to move out of the house. 
  4. After the refrigerant cools down a bit, it travels back inside into the evaporator, where it passes through a narrow valve at low pressure, instantly causing the special fluid to become very cold. As the blower blows on the coils, it starts cooling the air in the environment, reducing the temperature in the room. 

Step 3: Blow Cool Air into the Room

With the help of a fan, the air conditioner blows the cool air into the room and sucks in heat once again, restarting the entire refrigeration cycle. It’s essential for homeowners to understand that any fault in the compressor can adversely impact an air conditioner’s ability to execute this heat transfer. 

When Do Air Conditioners Bring Outside Air into a Room?

A key thing to remember is that an air conditioner does not bring fresh air from outside. It constantly recycles the air in a room, making it cooler without purifying it. This means that you’re breathing in old oxygen and carbon dioxide, which can negatively impact your health. 

Since the blower unit of an air conditioner is responsible for the heat exchange, it might bring in fresh air from the outside if there are any leakages inside the room. 

Gaps between the door and the floor or holes in the walls are perfect for letting oxygen flow into the living space. However, this may not be enough. 

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To bring fresh air from the outside and replenish the oxygen levels inside the room, you must invest in ventilation systems or keep the doors or windows open for a while. This will occasionally freshen up the air in your home, keeping your lungs happy and healthy. 

Do Homeowners Need Additional Ventilation?

Whether you’re a homeowner or running a business, there are several things that you can do to improve the quality of indoor air, and one of them is installing additional ventilation systems. While it’s not crucial, these can help with heat transfer, reducing your cooling needs and lowering your electricity bills. 

There are many different types of ventilation systems that you can consider for your home. Its style and function will vary depending on your and your family’s needs. It’s best to discuss your house’s heating and cooling requirements with an experienced HVAC professional. 

Alternatively, consider leaving the windows in your room open for a while for the outdoor air to flow in. This can ensure fresh oxygen and improved indoor air quality, especially when complemented with routine duct cleaning.

However, opening the windows and doors too wide in an air-conditioned space can draw out too much cool air, causing the air conditioner’s compressor to work overtime. This may result in increased power usage and higher electricity bills. 

Why Is Proper Ventilation Important for Your Air Conditioner Unit?

Without proper ventilation, the air inside your room or living space will get stale quickly, increasing the risk of pollutants. It can also cause humidity levels to spike, creating a breeding ground for bacteria and mold. If left unchecked, this can lead to respiratory problems. 

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Bathing and cooking are examples of activities that contribute to increased moisture levels in homes. Proper ventilation is essential to prevent mold growth and the associated health problems, including respiratory issues, immune system damage, and irritation.

Does a Portable Air Conditioning Unit Improve Indoor Air Quality?

To determine whether a portable air conditioner improves air quality, it’s essential to understand how this system works. 

The small fan is responsible for drawing hot air from the room into the AC unit while the refrigerant gets cold. With the help of an outlet, the portable air conditioner expels heat outside while ensuring a cooler indoor environment.

While portable AC units are convenient because they can be moved around, they recycle the air inside the room without bringing fresh oxygen from the outside.

Let an Experienced Professional Handle Your Home’s Cooling Needs!

Whether it’s a split, portable, or central air conditioning unit, these residential cooling systems do not bring in fresh air from the outside. Large commercial units may have additional ventilation to reduce pollutants, molding, and other problems. 

Since an air conditioning unit is one of the most important and complex systems in your home, it’s essential to understand how it works so that you can take the necessary steps to ensure its proper functioning and maintenance. Remember, your health and comfort should be your main priority.

Whether you’re looking for Los Angeles air conditioning repair services or need help installing an AC unit, always reach out to a trusted air conditioning company with a proven track record of excellence in repairing and maintaining HVAC systems. 

Call us today and get in touch with our experienced professional to cool your home and beat the heat this summer!

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