Differences Between Fresh Air System and Traditional Ventilation Installation by OreganAir

08 August 2023

Explore OreganAir’s innovative approach: Fresh Air System vs. Traditional Ventilation. Discover the key differences for better indoor air quality.

Proper ventilation in your building is essential to maintain a healthy and comfortable indoor environment and can be achieved by picking either a Fresh Air System or traditional ventilation.

A healthy and comfortable indoor environment can be achieved traditionally through ventilation systems that rely on natural airflow, mechanical fans, and air conditioning as they can circulate and refresh the air. But as time passes, Fresh Air Systems have been developed and improved to enhance the indoor air environment without significant compromises.

If you are torn between a Fresh Air System and traditional ventilation, you may want to know their key differences to help you pick one.

Air Source

One of the primary differences between the two lies in the source of the air. Traditional ventilation systems often recirculate indoor air, while Fresh Air Systems introduce fresh outdoor air into the building. The latter would draw fresh air from the outside, filter it, and then distribute the filtered air throughout the indoor space. Its processes ensure a continuous supply of clean, oxygen-rich air and help remove stagnant air and pollutants.

Air Quality

Fresh Air Systems excel in improving indoor air quality. Since they filter and purify incoming air, they can conveniently remove particulates, allergens, pollutants, and odours. By continuously introducing fresh air and filtering out contaminants, these systems can significantly enhance indoor air quality and create a healthier living or working environment. Traditional ventilation methods, alternatively, may not guarantee the same level of air purification.

Humidity Control

Most Fresh Air Systems today often include humidity controls that can regulate humidity levels by adjusting the amount of outdoor air brought into the building and by integrating dehumidification or humidification functions. This feature can be beneficial in areas with high humidity or when precise control of indoor humidity is required. Traditional ventilation methods may not feature humidity control capabilities that can carry out the same functions.

Energy Efficiency

Traditional ventilation systems may rely solely on mechanical fans or air conditioning, which can consume more energy. On the other hand, Fresh Air Systems are known for their energy efficiency. They can conveniently optimise the exchange of indoor and outdoor air while reducing energy consumption. These systems often incorporate heat recovery mechanisms that extract energy from the outgoing air and transfer it to the incoming fresh air. These mechanisms help them reduce the need for additional heating or cooling.

Noise Levels

Fresh Air Systems are designed to operate quietly, cutting noise disruptions in the indoor environment. Traditional ventilation systems, especially those relying on mechanical fans or air conditioning units, can generate noise that may impact occupant comfort.


Fresh Air Systems can be customised and integrated with other building systems. They can work alongside heating, cooling, and air conditioning systems, providing a comprehensive solution for indoor climate control. Traditional ventilation methods may not offer the same level of customisation and integration options, which can complicate the control of indoor climate.

Fresh Air Systems offer several advantages over traditional ventilation methods. They provide a continuous supply of fresh, filtered air, improve indoor air quality, offer energy efficiency, humidity control, lower noise levels, and customisation options. When considering ventilation options for your space, you must assess your specific needs and consult with professionals to determine the most suitable solution for achieving a viable indoor environment.

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