Introduction to the Kosmen KM-A300 Pro Fresh Air Ventilation and Air Purification System

In large urban areas, keeping windows closed to use air conditioning and avoid dust often makes indoor spaces stuffy due to a lack of oxygen and the buildup of CO₂. The Kosmen KM-A300 Pro fresh air system is designed as an ideal solution to comprehensively improve indoor air quality, delivering a comfortable and refreshing environment all year round.

Structure

Structure of the Kosmen KM-A300 Pro fresh air supply and air purification system

Operating Principle

• Air Supply: The unit draws in oxygen-rich outdoor air, which passes through the heat recovery core where heat exchange occurs without mixing the air streams. The air then goes through a filtration system to remove fine dust, bacteria, and allergens before being supplied into the room.
• Air Exhaust: Polluted indoor air (containing CO₂, odors, and humidity) is drawn into the unit, passes through the heat exchanger to transfer heat to the incoming air, and is then expelled outside.

Advantages of the Kosmen KM-A300 Pro Heat Recovery Fresh Air System

Space-saving ceiling-mounted design

The Kosmen KM-A300 Pro is designed for ceiling installation, making use of overhead space and freeing up floor area. Its compact, box-shaped structure allows it to blend discreetly into the ceiling without affecting interior aesthetics. Ceiling mounting also enables purified air to be distributed more evenly throughout the space, delivering better airflow circulation and a more comfortable environment compared to floor-standing units.

Ceiling-mounted design optimizes usable space

Continuous oxygen supply for large spaces

The KM-A300 Pro is ideal for large areas of around 120 m², equivalent to a volume of 300 m³. In spacious or high-occupancy environments such as offices or conference rooms, conventional air purifiers alone are often insufficient, as they only recirculate existing air while CO₂ remains trapped inside, causing stuffiness.

Provides a stable oxygen supply, preventing fatigue and stuffiness

In contrast, the Kosmen KM-A300 Pro continuously supplies fresh air while expelling polluted air and CO₂ outside, ensuring optimal oxygen levels. This helps users stay alert, energized, and eliminates the fatigue commonly experienced in enclosed buildings.

Advanced filtration system

The Kosmen KM-A300 Pro features dual air ducts, both equipped with modern filtration systems to enhance overall efficiency. At the air supply inlet, incoming air passes through a G4 pre-filter and either a HEPA H13 or F8 filter (optional), removing up to 99% of fine dust, bacteria, and harmful particles. Clean, purified air is then delivered into the room, promoting a healthier respiratory environment.

Advanced filtration system removes most harmful pollutants affecting health

Meanwhile, polluted indoor air extracted from the room is also filtered through a G4 layer at the exhaust outlet. This ensures not only clean incoming air but also minimizes the release of dust and contaminants into the external environment. The dual-filtration mechanism optimizes air exchange efficiency, reduces the risk of cross-contamination, and enhances the durability of internal components.

High heat recovery efficiency

During hot weather, bringing outdoor air directly into the room can increase indoor temperature, forcing air conditioners to work harder and consume more energy. The Kosmen KM-A300 Pro addresses this with a Counter-flow heat exchanger, achieving a heat recovery efficiency of 84–96%, helping stabilize indoor temperature and reduce the load on air conditioning systems.

Integrated heat recovery mechanism helps balance indoor temperature in enclosed spaces

This feature also helps prevent thermal shock, making it especially safe for families with children, the elderly, or individuals with sensitive respiratory systems.

Notably, the heat recovery system can be flexibly turned on or off depending on user needs and weather conditions. It can be activated during hot weather or when using air conditioning to maintain temperature stability and save energy, or turned off in mild conditions to maximize fresh air flow and enhance natural ventilation.

Optional heating element for added comfort

The heating element is not a built-in component but an optional accessory installed based on user needs. It warms incoming fresh air before it enters the room, particularly useful in cold or humid conditions. This helps eliminate the discomfort of cold air entering indoor spaces.

Equipped with an optional heating element to warm the room during cold weather

In addition to heating, it also reduces moisture in the incoming air, helping maintain a dry, clean, and comfortable environment. This flexibility allows the system to adapt to seasonal changes and ensures optimal comfort year-round.

Modern control system

The Kosmen KM-A300 Pro is equipped with an intelligent control panel featuring a touchscreen display that shows temperature, humidity, date/time settings, screen brightness, and more. With just a single touch, users can easily adjust settings quickly and conveniently.

Intuitive control display allows easy monitoring and operation

Additionally, the unit supports Wi-Fi connectivity, allowing remote monitoring and control via a mobile app anytime, anywhere. It also features an RS485 port for integration with smart home systems or building management systems (BMS), enabling more professional and centralized operation.

Smart features

The timer function allows users to schedule on/off times according to daily routines, enhancing convenience while saving energy. A child lock ensures safe operation by preventing accidental adjustments, especially useful for households with children.

Timer setting feature optimizes usage needs and saves energy

The adjustable display brightness adds further convenience, allowing users to dim the screen at night to avoid glare while still clearly viewing information.

A filter replacement reminder helps users maintain the device proactively, ensuring consistent air purification performance and prolonging the unit’s lifespan.

Filter replacement alert enables users to proactively maintain performance and extend device lifespan

Notably, the KM-A300 Pro also features customizable fan speed settings to maintain desired levels of CO₂, PM2.5, and VOCs. This enables users to actively control indoor air quality, ensuring a safe, clean, and well-ventilated environment.

Safety and Operation Guidelines

Operating notes

• Ensure that air intake and outlet vents are not blocked by curtains, clothing, furniture, or other objects.
• Do not unplug the unit abruptly while it is operating.
• If the unit emits unusual noise, burning smell, or smoke, immediately disconnect power and contact Kosmen’s service center.

Proper operation is recommended to ensure durability and optimal efficiency

Maintenance and care

• Clean the unit with a soft cloth; avoid using strong detergents, solvents, or flammable chemicals.
• Clean the pre-filter with water every 3 months.
• Replace the HEPA H13/F8 filter every 6–12 months to prevent bacterial buildup.