Deutsch Deutsch 中文 中文
SMART O2 G3 Energy Recovery Room Ventilator(ERV)

SMART O2 G3 Energy Recovery Room Ventilator(ERV) SMART O2 G3 Energy Recovery Room Ventilator(ERV) SMART O2 G3 Energy Recovery Room Ventilator(ERV) SMART O2 G3 Energy Recovery Room Ventilator(ERV) SMART O2 G3 Energy Recovery Room Ventilator(ERV)

SMART O2 G3 Energy Recovery Room Ventilator(ERV)
The MENRED G3 Energy Recovery Ventilators (ERVs) are are a sustainable and reliable solution to improve indoor air quality and wellbeing. With their affordability, compact size, and easy installation, they are the perfect choice for homeowners looking to enhance their homes’ IAQ without sacrificing energy efficiency or the comfort of their living space.

The MENRED G3 Energy Recovery Ventilators (ERVs) are an affordable and sustainable solution to enhance indoor air quality and save energy. With increased airtightness of homes and human activity indoors, deficient IAQ has become a common problem, leading to various health issues and cognitive impairment, especially in children and the elderly.

The MENRED G3 ERVs can be easily installed in any type of home, whether it’s a new construction or renovation project, to improve occupants’ well-being by effectively exchanging indoor and outdoor air and reducing indoor pollutants. By recovering the energy from the exhausted air and transferring it to the fresh outdoor air, the G3 ERVs also help save energy.

The MENRED G3 ERV is specifically designed to offer a solution for small homes and townhomes with tight space requirements. Its wall-mounted construction allows it to be installed easily in homes where space is a limitation. Despite its compact size, the G3 ERV is equipped with high-quality components and performance features that ensure optimal air exchange and energy efficiency.

all mounted hrv


1. High air Volume,low energy consumption Germany EBM DC Forward centrfugal Fan Constant flow, long distance air supply Maxumun transport of pure fresh air 7680m³ per day

2. One-piece EPP Shell and internal structure Quiter, cold-resisttant,and heat preservation

3. Highest efficiency energy recovery: heat and humidity exchange to meet the requirement of temperature controls in different season

4. PM2.5 filter effective 99%: Ability to filter smog: the measured air outlet PM2.5 is less than or equal to10ug/m³

5. Smart control: The product can be equipped with a 4-inch color LCD controller and air quality sensor, the operation is simple and clear, real-time monitoring of air quality.

Selection Table:

ModelVoltage(V/Hz)Rated Air Volume(m³/h)Rated Power(W)Noise(dB(A))Max Air Volume(m³/h)Max PowerWeight(kg)Motor
G3220V/50Hz210903932021019EBM DC forward centrifugal motor
G3(210A1)220V/50Hz2101603932021019AC forward centrifugal motor


How enthalpy exchanger works? How enthalpy exchanger works?
By recovering and reusing the energy from the exhaust air, enthalpy exchangers effectively reduce the energy demand of the HVAC system, improve indoor air quality, and enhance overall energy efficiency in buildings.
Read More
Filter replacement Filter replacement
1、When the controller cartridge progress bar shows red, please replace the cartridge in time. 2、Open the middle gland plate of the exchange core in the direction as shown. 3、Take out the cartridge in the direction of the figure and replace it. 4、Put the replaced cartridge into the corresponding slot and cover the exchange core gland. 5、Open the cartridge setting page of the controller and press and hold the cartridge progress bar for 5 seconds to reset the cartridge balance, and the display shows 100% that the reset is successful. Note: Steps 1 and 5 are required for CLS4.0S LCD controller, if you purchase other controllers, please refer to the manual of the controller.
Read More
How many modes of Menred G3 ventilator can be set? How many modes of Menred G3 ventilator can be set?
Energy saving mode: The air volume of exhaust air and fresh air are equal. Default wind speed is low speed. Haze removal mode: The fresh air is high speed, the exhaust air is low speed, and the wind speed shows high speed. Sleep mode: Both fresh air and exhaust air are low speed, wind speed shows low speed. Auto mode: Automatically adjust the airflow level according to the indoor CO2 and PM2.5 concentration. User can set the corresponding value in the setting page. For example, when PM2.5 is set to High > 100 > Medium > 35 > Low and C02 is set to High > 1500 > Medium > 700 > Low, when the air quality sensor detects PM2.4 > 100 and CO2 is between 700 and 1500, the wind speed is high.
Read More
what is an enthalpy exchanger what is an enthalpy exchanger
Enthalpy exchangers are particularly useful in climates where there are significant temperature and humidity differences between the indoor and outdoor environments. Apart from transferring sensible heat (temperature), they also transfer latent heat (moisture) between the airstreams, providing the benefits of both heat and moisture recovery.
Read More
Why do our home need ERV ventilation? Why do our home need ERV ventilation?
When two people sleep for seven hours, their sweating and breathing produce approximately 7.5 to 8 decilitres of moisture and about 150 to 200 litres of carbon dioxide. They also release some 250 to 300 watts of heat to indoor air. If the moisture content of indoor air rises too high, the moisture condensates in the windows or in the structures of the cold external wall. Structures that have become moist are breeding grounds for microbes and mould fungi, which will before long cause damage to the structures. Almost all fungal mycelia grow at a relative moisture of more than 80% and in normal room temperature. Efficient ventilation removes the carbon dioxide and moisture load as well as smells, taking them out of the house.
Read More


Economy Park HQs, Yueqing City, China.


Weisswasser Germany

MENRED Green Building Industrial Park

Lingkun Island,Wenzhou City,Zhejiang China.

MENRED Enviro-Tech Industrial Park

Nanhu District, Jiaxing City, Zhejiang China.