Slim Series Energy Recovery Ventilation System units (ERVs 150~350 m3/h,AC Motor)

●Super slim design for easy installation

●External Galvanized metal sheet and Internal EPS unit structure

● Great sound absorption and whisper quiet operation

● High efficiency heat recovery up to 82%

● Sub-HEPA F9 filter integrated optional

● Bottom access for easy maintenance

● Optional: CO2 and humidity sensors function, auxiliary electric heating port



Products Detail


Holtop is the leading manufacturer in China that specializes in air to air heat recovery equipment.   Since founded in 2002, it is dedicated to the research and technology development of heat recovery ventilation and energy saving air handling equipment for more than 20 years. 

Holtop headquarters is located at the foot of Beijing Baiwang Mountain, covering area of 30,000 square meters. The manufacturing base is in Beijing’s Badaling Economic Development Zone, covering an area of 60 acres. As a well-known manufacturer in the field of heat recovery, its laboratory has passed national authoritative certification, and has a strong R&D team and dozens of national invention patents, participated in the compilation of multiple national standards, and is selected as a National High-Tech Technology Enterprises.

Holtop has mastered the core technology of heat recovery, independently developing products like plate and rotary heat exchangers, various heat &energy recovery systems and air handling units. Products have been exported to more than 100 countries and regions. Holtop cooperates with world famous brand or offer OEM service including Hitachi, LG, McQuay, TRANE, Systemair, Aldes, Haier, Gree, MHI Group, Midea, Carrier, etc,and has provided equipment for national projects many times including 2022 Winter Olympics, Wuhan Cabin Hospitals, World Expo Exhibition, etc. Holtop continuously ranks the top in domestic market of heat and energy recovery ventilators.


Internal EPS Structure EPS structure
Supper slim body design
Slim series ventilation are designed specially for the projects which have very strict ventilator height requirement, compared with the traditional congeneric products, ECO Vent Pro ERV‘s height is 20% off. Access door is at the bottom so maintenance is much easier. Supper slim body
New primary filter New primary filter
Sub-HEPA F9 Filter integrated optional
S u b - H E PA F 9 f i l t e r
High efficiency temperature and humdity recovery Holtop crossflow heat exchanger is built in the full ecovent pro series ERV, heat recovery efficiency up to 82% in winter, the allowance of moisture exchange between fresh air and exhaust air make a comfortable indoor temperature and humidity. 
enthaply heat exchange





ceiling ERV

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