Use Fans. Although fans don't bring in fresh air, they can circulate existing air, creating a breeze and preventing air from becoming stagnant. There are many types to consider, from ceiling and floor fans to wall-mounted models.
Improved air circulation.
Keeping interior doors open is your best option if you want better airflow inside.
By using ceiling fans, or portable fans for trouble spots, you can keep the air moving and avoid stuffy air and that stale smell. If your stale air problems are caused by moisture, a dehumidifier can help by taking that moisture right out of the air in any room that's giving you trouble.
One of the best and quickest ways to get your oxygen saturation up is by letting them get fresh air. If you are in a completely closed room, open some windows and let the fresh air fill the room. If you are feeling unwell in a well-ventilated room with many people in it, go close to the windows and breathe the air in.
An air conditioner provides cold air inside your home or enclosed space by actually removing heat and humidity from the indoor air. It returns the cooled air to the indoor space, and transfers the unwanted heat and humidity outside.
There are several potential reasons why one room may be significantly warmer than the rest. These can include inadequate air flow, poor insulation, or even the placement and size of the AC unit. It's also important to consider external factors such as sunlight exposure and window efficiency.
Leaks around doors and windows can let polluted outdoor air in too. Indoor air also has allergens, such as dust, pet dander, and mold. Building materials, furniture, carpets, scents, and cleaners can release chemicals into the air.
Slow Down the Spread of House Fires
Sleeping with your bedroom door closed is a practice that significantly improves your chances of surviving a house fire. According to the FSRI, closing your door can greatly decrease carbon monoxide levels from 10,000 PPM to 1,000 PPM when compared to leaving it open.
In short, the answer is no, air conditioners do not bring in fresh outside air. Rather, it takes the air inside your house and puts it through a heat exchange process. So, how exactly does it work? Generally, air conditioners move unwanted heat out of your home, thus lowering the temperature inside your home.
Effects on overall health
Fresh air does not enter and stale air is not removed to the outside. The consequences are: Increased risk of respiratory diseases such as asthma and allergies. Increased risk of developing respiratory problems.
Cross ventilation (single spaces): Being unsophisticated and efficacious, this type of ventilation is a horizontal process that is driven by pressure differences between the windward and leeward sides of the occupied indoor environment.
How, then, to keep your IAQ A-OK? Prevailing wisdom is that at least 5 minutes—and ideally 15 to 20 minutes—a day of ventilation significantly improves indoor air quality. For a strong ventilation, open the front and back door, along with windows on the path in between, to get the baddies out.
For rooms with only one window
When there is only one window, it is effective to open the room door and place a fan or similar device near the window. The most effective method is to turn the fan toward the window and let air outside the room.
There may be air vents around the house that you have closed. This will cause more warm air to be delivered to certain rooms through your home's ductwork where the vents remain open.
The room will get hotter. You had better hope you have a window open in a well insulated room with a large fan motor.
Even without an open window, fans can improve air flow. Point fans away from people. Pointing fans toward people can blow contaminated air directly at them. Use ceiling fans to help improve air flow in the home whether or not windows are open.
Vent through a door: If there are no windows available for venting, you may be able to vent the air conditioner through a door. Simply cut a small hole in the door and install a vent cover. Vent into another room: If there's another room nearby with a window, you may be able to vent the air conditioner into that room.
Obviously on a hot summer day, the outside air will take lots more energy to cool than already-conditioned inside air would. This again means that you'll be wasting energy. To maximize the efficiency of your HVAC system as well as your comfort, don't close off unused rooms.