Skip to content

How Much Fresh Air Does A House Need? – Helpful Answer To Stay Healthy

How much fresh air does a house need is always a question that many people concern. Let's find the answer and discover more useful solutions for your health.

IAQ Boost is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

The issue of a clean atmosphere and human health is always a hot potato that many people pay much attention to. But not everyone has an understanding of the basic information like how much fresh air does a house need or how much fresh air cfm per person in standard condition.

Fresh air in the room always needs to be circulated and refreshed. It ensures an adequate supply of oxygen for your respiration and the functioning of your organs.

This article will help you discover more useful aspects of these issues. If you want a fresh atmosphere and good health, do not ignore this post to equip yourself with the necessary knowledge.

How Much Fresh Air Does A House Need? 

What Is Fresh Air?

Fresh air will contain few impurities and dust particles invaded in space. The main components of the atmosphere are nitrogen and oxygen. Nitrogen accounts for 78%, oxygen accounts for 21%, and the remaining 1% of other gasses.

Living in a clean atmosphere is important for human health and life. However, the environment today is polluted by wastes, toxic gasses, and dust from factories or daily activities. 

The main cause of air quality deterioration is the proportion of impurities and harmful gasses that are higher than the standard.

What Is Fresh Air
What Is Fresh Air

Why Is It Virtual?

For The Respiratory And Immune System

Fresh air ensures your respiratory system always works with good performance. It is not only beneficial for the breathing process, but it also helps limit asthma, allergies, or blood pressure.

When you breathe, the tiny particles in the atmosphere come into your body by the windpipe. Fresh air has an AQI rate between 0 and 50, a PM rate at 2.5, and dust concentrations below 50 micrograms per cubic meter. At this point, your lungs are almost immune to the risk of pollutants. 

In addition, clean air also helps improve immune system function. It supports white blood cells to produce, thereby increasing the body’s resistance to bacteria or viruses.

For The Brain

Your brain needs about 20% of the oxygen in your body. When the atmosphere is polluted and cannot provide the necessary amount of O2, your brain can not concentrate and think well. The body also feels tired and depleted of energy.

For Your Mood And Sleep

Another effect is the improvement in mood. Serotonin is a hormone that helps you feel happy and relaxed. When you inhale a clean atmosphere, your body produces more of these hormones. On the contrary, that will not happen when you breathe polluted air-flows.

Air quality plays an important role in getting a good night’s sleep. When you sleep, you stop thinking and feeling all emotions. However, breathing is what your body unconsciously maintains while you rest. So, a pure atmosphere has a close relationship with the quality of your slumber.

Because a pure atmosphere helps limit many health problems and improves mood, it can prolong people’s lives. Usually, people who live in clean spaces are healthier and live longer than others.

How Much Minimum Fresh Air Requirements Per Person?

According to statistics, when your body is in a stationary state, it will breathe 16 times per minute, each inhalation of about 500 milliliters of air. So, every day a person needs 10,000 liters of atmosphere to meet the body’s breathing needs.

How to increase Air Exchange Rate In Your House? 

How to increase Air Exchange Rate In Your House

Is Home Air Exchange Rate Important?

The air exchange rate is the number of times the atmosphere is replaced or mixed per hour. Specifically, each time there is a new atmosphere from outside entering the room and mixing with the old one, it is counted as one air exchange.

It is an important indicator to ensure the quality and flow of the atmosphere in the room. ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) has recommended the standard air exchange rate. 

Accordingly, your home should have an ACH (air changes per hour) of about 0.35 if there is less than 15 of cfm per person ashrae standard. You can calculate the ACH for your room space by using the formula below:

ACH = CFM (Cubic feet per minute) x 60 (minutes)Volume of room (ft3)

The home air exchange rate is also the basis to calculate whether your bedroom suffocates or how much ventilation does a bedroom need.

How To Improve Home Air Exchange?

The simplest way to increase the atmosphere exchange is to turn on the fan, use a vacuum cleaner, or open the doors in the room. It is quite simple but can help you bring more clean spaces into the room.

How To Improve Home Air Exchange

However, it is not always the best solution. You should not do it when the weather changes (too hot, too cold, and snow) or when the air around you is contaminated by waste or dust. At such times, installing a filter or air purifier in your home is a wise choice.

Many HVAC specialists (Heating, Ventilating, and Air Conditioning system) recommend that everyone install air purifiers or fans in the room. It is very effective in helping the atmosphere to be circulated better in the room. 

Besides, most air purifier products have the feature to remove dust, viruses, pet hair, or dirt particles from the space in the room.

Final Words 

The atmosphere around us is seriously polluted due to the activities of factories, industrial zones, and daily household activities. 

As such, calculating how much fresh air does a house need helps you balance the source of a clean atmosphere. This will be essential to ensure you and your family are always in good health.


Featured on

Yahoo News