The HRV (Heat Recovery Ventilation) fresh air system is a ventilation device that recovers exhaust air energy through sensible heat exchange technology to 

achieve indoor and outdoor air replacement.

‌Heat recovery‌: By using the positive cross flow of exhaust air and fresh air through the heat exchange core, the heat in the exhaust gas is transferred to the 

incoming fresh air, reducing air conditioning energy consumption and maintaining a stable indoor temperature34.

‌Independent operation‌: It has an independent pipeline system and is not directly related to air conditioning, heating and other equipment, supporting 

24-hour continuous ventilation

2. Core functions and technical features

‌Energy-saving and high-efficiency‌

The sensible heat recovery efficiency can reach 60%-80%, significantly reducing the energy loss of winter heating or summer cooling

Low power design (usually ≤50W), low long-term operating cost

Climate adaptability‌

Specially optimized for cold areas, equipped with ‌automatic anti-frost function‌, can operate normally at extremely low temperatures of -25℃

Only adjust the temperature, do not handle humidity, and need to be equipped with humidification/dehumidification equipment to meet humidity requirements

Air purification‌

Standard filter (such as F6+H13 grade HEPA), effectively filter PM2.5, pollen and other pollutants

Some models support a combination of physical filtration and electrostatic dust removal to reduce the risk of secondary pollution

3. System composition and configuration

‌Core components‌

‌Heat exchange core‌: hydrophilic aluminum foil material, to achieve efficient sensible heat transfer3.

Fan system: Dual centrifugal fan design, static pressure can reach 268Pa, support long-distance air supply

Control module: Support intelligent mode switching (such as automatic adjustment of air volume according to temperature and humidity)

Installation adaptability

The air volume range covers 150-400m³/h, suitable for 80-300㎡ residential and commercial spaces

Old house renovation is friendly, the host is often installed in attics, laundry rooms and other areas, and the pipeline layout is flexible

4.Applicable scenarios

Climate conditions: Preferentially recommended for cold and dry areas in winter (such as Canada and northern China)

Building type: Enclosed spaces that require continuous ventilation (such as high-airtightness residences and office spaces)

5. Maintenance points

Filter replacement: The pre-filter needs to be cleaned at least once a year, and the HEPA filter needs to be replaced every 1-2 years

Core cleaning: Clean the surface of the heat exchange core with a vacuum cleaner every 2 years, and water washing is prohibited