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Kosmen KM-A150 Fresh Air Ventilator and Air Purifier is a new-generation wall-mounted air exchange device designed for enclosed spaces such as condominiums, apartments, showrooms, offices, etc. With a dual mechanism of drawing in oxygen-rich air from the outside while expelling indoor CO2, fine dust, and odors to the outside, it helps balance the air and temperature in the room, bringing a fresh environment while still ensuring energy savings.
- Applicable area: 60 m2
- Applicable volume: 150 m3
- Maximum airflow: 150 m3/h
- Fan motor type: EC
- Noise level: 33 dB
- Rapid air circulation with 2 air intake and supply outlets, Ø110 mm in diameter.
- Heat recovery efficiency of 75% - 80%, reducing the electrical load for air conditioners.
- Equipped with a heating element (optional extension), supporting space warming in cold weather.

- Genuine 2 years warranty
- Free shipping
Introduction to Kosmen KM-A150 Fresh Air Ventilator and Air Purifier
Kosmen KM-A150 Fresh Air Ventilator and Air Purifier is a smart wall-mounted air exchange solution that eliminates the lack of oxygen in enclosed rooms causing stuffiness and fatigue. The machine operates on a 2-way circulation, continuously supplying fresh air from outdoors through a standard filtration system into the room, while simultaneously extracting harmful gases to the outside. The device also automatically detects actual pollution levels (PM2.5, CO2, VOCs) to adjust the fan speed, helping the living space to always maintain the most comfortable state.

Technical specifications of the Kosmen KM-A150 Fresh Air Ventilator & Air Purifier
Structure of Kosmen KM-A150 Fresh Air Ventilator and Air Purifier

Structure of the Kosmen KM-A150 Fresh Air Ventilator and Air Purifier
- Supply air motor and exhaust air motor.
- Cross Flow SY heat/energy recovery core.
- Multi-layer filtration system (Pre-filter for the exhaust outlet; Pre-filter + Carbon + HEPA for the supply outlet).
- Touch control screen.
- Heating element (Optional).
Operating Principle
The machine operates in two directions: exhausting stale indoor air to the outside while supplying fresh air indoors. These two airflows will pass through the heat recovery core to exchange heat with each other before entering/exiting the room, where they exchange heat without being mixed.
- Air supply: The machine draws in oxygen-rich outdoor air, passes it through the heat recovery unit and the filter to remove fine dust, bacteria, and allergens. Afterwards, it delivers clean air into the room.
- Air exhaust: Polluted indoor air (containing CO2, odors, moisture) is drawn into the machine, continues through the heat recovery unit to exchange heat with the supply airflow, and is then expelled to the outside environment.

Intelligent bi-directional air circulation technology
Advantages of Kosmen KM-A150 Fresh Air Ventilator and Air Purifier
Wall-mounted design, optimized installation
The outstanding advantage of Kosmen KM-A150 heat recovery fresh air ventilator is its modern wall-mounted box design. It does not require a complex ventilation duct system; the installation is simple, helping to preserve the aesthetics of the existing interior space.

Wall-mounted design for a streamlined installation
Continuous clean air supply, no more stuffiness
In enclosed spaces with frequent air conditioning use, CO2 levels easily rise combined with fine dust and odors, leading to discomfort, fatigue, and restless sleep. Unlike conventional air purifiers (which only circulate old air), Kosmen KM-A150 wall-mounted fresh air ventilator proactively supplies clean, oxygen-rich air from the outside continuously, keeping the house well-ventilated and promoting a healthier respiratory system.

Continuous oxygen supply prevents stuffiness and fatigue
Through the air supply and exhaust duct system, processed by an intensive 3-layer filter cluster (Pre-filter, Activated Carbon, and HEPA) that completely removes impurities and harmful fine dust, the device creates an absolutely pure airflow before blowing it into the room. This is truly the perfect "new generation" healthy living solution for every family.
Heat recovery core, energy saving
The process of bringing hot outside air into an air-conditioned room often causes a temperature difference, leading to overload and wasted electricity. However, Kosmen KM-A150 fresh air ventilator easily solves this problem by integrating the advanced Cross Flow SY heat exchange core.
With a heat recovery efficiency of 75% - 80%, this system helps balance the incoming airflow's temperature to neutralize with the room temperature (a difference of only 1-2 degrees Celsius). This mechanism keeps the room temperature stable and minimizes the electrical burden on the air conditioner.

Heat Recovery Technology - Retains air conditioning coolness and maximizes electricity savings
In addition, the device features an ultra-quiet inverter EC motor that operates with outstanding efficiency and high static pressure, ensuring fresh air is distributed far into every corner. The motor runs exceptionally quietly and consumes minimal power, maximizing long-term operational cost savings.

EC Motor - A powerful core for optimal energy efficiency
Optional heating element
In regions with cold seasons like the North or the Northwest, bringing air from the outside can cause a freezing sensation. Kosmen KM-A150 fresh air ventilator offers an optional version which is a heating element that instantly warms up the cold airflow, preventing thermal shock. This heating element can also dry the incoming airflow, making it especially suitable for humid days, keeping the house dry and clean.
Modern control, smart WiFi connection
Kosmen KM-A150 fresh air ventilator features a sharp 4-inch HD touch screen displaying real-time Air Quality Index (AQI) indicators such as: PM2.5, CO2 concentration, temperature, humidity, and VOCs. This screen easily adjusts brightness to protect the eyes and optimize sleep with an automatic shut-off mechanism after 1 minute, waking up instantly with a touch.

Enjoy a hands-free lifestyle with the smart airflow monitoring and automation system
In Auto mode, users can set the machine to run automatically based on CO2, PM2.5, or VOC concentrations. When pollution indicators exceed safe thresholds, the machine will automatically increase/decrease the fan speed level (from level 1 to level 5) to clean up quickly. Once the air is clean, the machine will lower its capacity to optimize energy.
The device has integrated WiFi allowing remote control via a smartphone. Just download the application, scan the QR code, and add the device to your phone; you can control the on/off switch, change modes, and monitor air quality from anywhere, ensuring your home is always filled with fresh air before you return.

WiFi Connection - Manage air quality anytime, anywhere
In addition, it comes with smart features such as a smart filter cleaning alert that allows pre-setting the filter's lifespan (from 1 to 9999 hours), energy saving, and the ability to connect to the RS485 standard smart home ecosystem, bringing a convenient, proactive, and optimal experience for modern living spaces.
Safety notes when using Kosmen KM-A150 Fresh Air Ventilator
Operate the device properly
- Avoid placing objects that obstruct the air supply and exhaust outlets, as this will disrupt the
- intake and supply process, reduce filtration efficiency, and put pressure on the motor.
- If the machine is operating in heating mode, do not turn it off abruptly by unplugging it.
- When there is a gas leak in the house: Absolutely do not use the machine for ventilation; instead, open the windows immediately.
- Do not allow children or persons with reduced physical, sensory, or mental capabilities to operate the machine on their own.
- Do not arbitrarily disassemble, repair, or modify the device without the advice of professional technical staff.

Proper operation ensures long-lasting durability and optimal efficiency
Periodic maintenance and cleaning
- Periodically clean the pre-filter after about 3 months of use.
- Periodically replace the F8 filter every 6 months or the HEPA H13 filter every 12 months.
- Inspect the heat exchanger once a year; clean the heat recovery unit to maintain heat exchange efficiency at 75 - 80%.
- Always completely disconnect the power supply before performing maintenance.
1. What is the Kosmen KM-A150 Fresh Air Ventilator?

2. What is the difference between the Kosmen KM-A150 and opening windows or using an exhaust fan?

3. Can the device filter fine dust and cigarette smoke?

4. How often should the filters be cleaned or replaced?

5. Is the device noisy?

6. Is it difficult to operate the device?

7. What is the optimal room size for the device?

8. Is the installation complicated?


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