Hexagon Engineering & Planning lead by BUET Engineers of expertise in Design, Consultancy, Installation, Testing, Commissioning, HVAC system  Maintenance of Fire Dete

ction, Protecti

on and Fire Fighting Systems. It is a progressive organization with Innovative, exceptional, environment- friendly, re- engineered, reliable products

and services. Our Global part

ners have ultra-modern manufacturing facilities in Dubai, KSA, China, UK and USA. UL/ FM/LPCB/ ISO Certified produc

ts are available according to demand.


Through years of innovation and development, Holtop can supply a full range of products, up to 20 series and 200 specifications. The product range mainly covers: Heat Recovery Ventilators, Energy Recovery Ventilators, Fresh Air Filtration Systems, Rotary Heat Exchangers (Heat Wheels and Enthalpy wheels), Plate Heat Exchangers, Air Handling Units, etc.


Holtop assures high quality products with

professional R&D team, first-class production facilities and advanced management system. Holtop owns numeral control machines, national approved enthalpy labs, and has successfully passed the certifications of ISO9001, ISO14001, OHSAS18001, CE and EUROVENT. Besides, Holtop production base has been approved at spot by TUV SUD.


Holtop has 400 employees and covers an area of more than 30,000 square meters. Annual production ability of heat recovery equipment reaches 100,000 sets. Holtop supplies OEM products for Midea, LG, Hitachi, McQuay, York, Trane and Carrier. As an honor, Holtop was the qualified supplier for Beijing Olympics 2008 and Shanghai World Exposition 2010.


Holtop manufacturing headquarter is located at the foot of Beijing Baiwangshan 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, with an annual production capacity of 200,000 units of air heat recovery equipments.


In 2017,  Holtop was elected as Nation

al Hi-tech enterprise and launched the Eco-clean Forest series energy recovery ventilators.

In 2016, Holtop moved to her new production base and achieved the annual growth of 39.9%.

In 2014, Holtop was approved by SGS inspection on the ISO management systems.

In 2012, Holtop achieved great success in AHU field by working with Mercedes Benz, BMW, Ford, etc, and rotary heat exchanger certified by Eurovent.

In 2011, Holtop manufacturi

ng bases were certified by ISO14001 and OHSAS18001.

In 2009, Holtop supplied energy recovery ventilation systems to World Expo pavilions.

During 2007- 2008, Holtop built the authorized enthalpy lab and supplied

energy recovery ventilation systems to Oly

mpic Games

In 2005, Holtop moved to a 30,000sqm factory and certificated by ISO9001

In 2004, Holtop rotary heat exchanger launched in the market.

In 2002, Holtop was formally founded and energy recovery ventilator launched in the market.


Our Services: -

  • Eco-Smart Energy Recovery Ventilators

  • Heat Exchangers

  • Air Handling Units


Holtop industrial AHU special design for modern factory, such as Automotive, Electronic, Spaceflight, Pharmaceutical etc. Holtop provide solution to handle the indoor air temperature, humidity, cleanness, fresh air, VOCs etc.5



HOLTOP industrial integrated air handling units are widely used in automobile, electronics, aerospace, printing, pharmaceutical, industrial plants and other industries, as well as the environmental temperature and humidity, cleanliness, fresh air volume, noise, toxic and harmful gas control and the industrial environment control field with energy-saving and environmental protection requirements.6


50U series modular air handling unit

750B series combined air handling unit


80B series modular air handling unit




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