Do Air Conditioners Bring in Fresh Air from Outside?

Air conditioning units are common in homes, offices, and commercial buildings. They make your time in the space comfortable and productive.

However, you cannot help but wonder where your air conditioner gets the cool air. Is it from the air outside your space, or is it the same air circulating inside the room?

Where Does the Air Conditioner Get Its Air?

A common misconception is that air conditioners take in air from outside and bring it into your space. Although certain components of some kinds of air conditioners are located outside, they do not bring in outside air. Instead, air conditioners bring heat outside through a heat pump. The heat pump reverses the airflow and removes the heat from your space, then pumps it out of your home or office.

Other common misconceptions about air conditioners include that they:

  • Remove humidity from the air
  • Make the air in your space colder
  • Are bad for your health
  • Cause global warming

In reality, air conditioners:

  • Do not remove humidity from the air
  • Make the air in your space cooler by removing heat
  • Are not bad for your health
  • Do not cause global warming

Certain air conditioners, such as swamp coolers, do remove humidity from the air. However, this is not the case for all air conditioners.

Air conditioners work by removing heat from the air in your space. This makes the air cooler but does not necessarily make it colder. In fact, if you set your air conditioner to a temperature that is too low, it can actually make the air in your space warmer.

Air conditioners are not bad for your health. In fact, they can actually improve your health by removing heat from the air and making your space cooler.

The air from your air conditioner is just the air from your room. It is circulated and cooled repeatedly by your air conditioner. Your AC unit takes the heat out of this air and pumps it outside using a heat pump. The air is then taken to the refrigerant to cool it down before going into the unit’s return air intake. Before it is released into your space, the air passes through a filter to remove debris and dust from the air. This process makes your air clean and free from harmful pollutants.

The fact that AC units do not bring in “fresh” outside air is very helpful, especially for those who suffer from pollen allergies. Bringing in outside air can lead to the potential risk of bringing in pollen and particulate matter that can be very harmful to your health. By recirculating the air already present in your room, you can ensure that it is mostly free from pollen and dust, as it is filtered repeatedly by your AC unit.

Another advantage of not bringing in outside air is that it can help to keep your energy bills down. When AC units bring in outside air, they have to work harder to cool it down to the temperature you desire. This uses more energy and thus, costs you more money. By not bringing in outside air, your AC unit can simply recycle the air already present in your room, saving you money on your energy bill.

Overall, not bringing in outside air is a very good thing for both your health and your wallet. By keeping the air inside your room filtered and free from pollen and dust, you can help to improve your allergies and save money on your energy bill.

How to Maintain Clean Air

Although your air conditioning systems have built-in air filters, you still have to take some extra steps to ensure that you and your loved ones breathe in quality air. Here are some measures you can take to maintain the freshness and purity of air circulating in your space:

● Air filter cleaning or changing

Your air conditioner filters out air repeatedly to prevent dust, pollen, mold, and particulate matter from mixing in with the air you breathe in. So, it is necessary to clean or change out your air filters regularly.

● Regular maintenance checks by professionals

Minor or major defects in your AC unit can affect the quality of the air that you are inhaling. Getting your unit checked by a technician regularly will ensure that your unit is not faulty and malfunctioning. Most maintenance services also include cleaning the unit, so you do not have to worry about getting your hands dirty. No matter how minor this step may seem, you can save so much money in the long run because this prevents major unit breakdowns.

There are a lot of benefits that you can get from having your AC unit serviced and maintained by a professional. Aside from ensuring that your unit is functioning properly, you can also enjoy clean and fresh air inside your home. This is especially important if you have kids at home because they are more susceptible to respiratory problems. Moreover, regular maintenance can also help extend the life of your AC unit. So if you want to get the most out of your investment, be sure to have it checked and serviced by a licensed technician regularly.

● Open your windows

It does not hurt to open up your windows sometimes and let the outside air in. This will change out air that has been re-circulating inside your room for a while. Air that gets recycled countless times without replacement eventually loses oxygen. Letting air from the outside into your house will bring in fresh and oxygen-rich air for your air conditioner to filter and cool.

Air conditioners are wired to cool your space’s air and give you a convenient and comfortable experience. However, you can also take extra measures to ensure that you and your loved ones are inhaling fresh and healthy air. Taking extra steps such as regular maintenance check-ups will prevent you and your family from contracting respiratory diseases.

If you have serious concerns about your indoor air temperature and cleanliness, you can have both systems installed. If both work at the same time, they may benefit each other while creating the most comfortable possible indoor air for your family.

HVAC Contractor



ECM Air Conditioning, with its headquarters located in Boynton Beach, FL, provides air conditioning services within Palm Beach County, Broward County, Martin County, and St. Lucie County. If you’re looking to have a new HVAC system installed, we’re on-call and ready to assist you. So if you’re in need of an HVAC installation, don’t hesitate to contact us today to schedule an inspection! Our HVAC installation experts will check your ductwork, measure, check wire sizes, and more before making recommendations to ensure maximum efficiency and comfort. Call us at 561-295-1763 or contact our HVAC installation team online by clicking here.


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