HVAC Air Purification
Purification modules and duct-mounted devices for air handling units, central air-conditioning systems and return-air paths.
Since 2009 · Beijing · Export-ready IAQ engineering
Engineering Clean Air Into Modern Buildings
Energy Environmental Technology (Beijing) Co., Ltd. designs, develops, manufactures and delivers indoor air purification systems for HVAC, fresh air, odor control and air quality monitoring projects.
System Focus
HVAC · Fresh Air · Odor Control · IAQ Monitoring
2009
Founded
10,000+
sqm factory area
4
production lines
1M+
annual capacity
Global
export experience
Commercial IAQ Engineering
Integrated purification systems for building-scale air quality control.
Anenj provides B2B air purification equipment designed for air handling units, ductwork, return-air sections and fresh air systems. Installed within the building's mechanical infrastructure, the solutions support cleaner, safer and more controllable indoor environments without occupying public-facing space.
With in-house R&D, manufacturing and engineering service capabilities, the company supports healthcare facilities, commercial buildings, schools, transit systems, hotels, apartments and wellness projects from solution selection through project delivery.
How Anenj Fits Into Buildings
A purification layer for HVAC and fresh air infrastructure
Commercial Space
Hospital, office, school, metro, hotel
HVAC / Fresh Air System
Air handling unit, ductwork, return air
Purification Module
Particles, odor, VOCs, microorganisms
Solutions
Indoor air quality solutions for complex buildings
Fresh Air System Purification
Fresh air and bidirectional flow products for ventilation upgrades and commercial indoor air renewal.
Odor Control
Deodorization systems for restrooms, waste rooms, public facilities and special high-odor spaces.
IAQ Monitoring
Air quality monitoring, display and system visibility for operation teams and building managers.
Healthcare and Public Buildings
Project-oriented IAQ systems for hospitals, schools, metro lines, offices, hotels and wellness facilities.
Product Architecture
A complete IAQ portfolio for central systems and room-level projects
HVAC / AHU
Box Purification Module
Installed inside air handling units and combined air-conditioning boxes for fresh or mixed air treatment.
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HVAC
Duct-mounted Purification Device
Installed in ductwork to treat multiple pollutants in centralized air systems.
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HVAC
Return-air Purification Module
Designed for fan coil and return-air positions in commercial and industrial HVAC systems.
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HVAC
Nano Photocatalytic Module
Configurable purification modules for air handling units and duct installation scenarios.
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Fresh Air
Bidirectional Fresh Air System
Supports air exchange, filtration and comfort improvement in commercial and residential spaces.
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Odor Control
Deodorant Purification Equipment
For restrooms, waste rooms and public facilities where odor removal is a core requirement.
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Monitoring
IAQ Monitoring System
Monitoring, display and operational visibility for indoor air quality management.
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Portable Air Purifiers
Portable Air Purifier Portfolio
Plug-in purifier models for hotel rooms, apartments, offices, clinics, vehicles and coordinated multi-site procurement.
View model portfolioSelected Benchmark Projects
Representative installations across headquarters, hospitals, transit and education projects
These references highlight selected landmark projects only. Anenj's delivered project portfolio extends across many more public buildings, healthcare facilities, commercial complexes and institutional environments.
Commercial Building
Alipay S Space
Headquarters
Microsoft China Headquarters
Healthcare
Peking Union Medical College Hospital
Public Transit
Beijing Metro Line 14
Education
BNU Tianjin Eco-City Affiliated School
Commercial Building
Alipay Building Project
More benchmark references
China Energy Engineering Building
Beijing Hanwei Plaza
China-Japan Friendship Hospital
Guangzhou Concord Cancer Center
Red Cross Society of China Headquarters Building
Beijing Tongren Hospital, Yizhuang Campus
Xiong'an Xuanwu Hospital
Beijing Metro Line 7
Beijing Yuying Middle School
Manufacturing and R&D
From product development to engineering delivery
Anenj was founded in 2009 and established production bases in Tianjin and Hebei in 2011 to better serve the Chinese market and international customers. For B2B buyers, the team supports early-stage requirement review before procurement decisions are finalized.
Design and R&D
Product development for indoor air purification, HVAC integration and custom project needs.
Production Base
More than 10,000 sqm of professional factory area and dedicated production lines.
Engineering Service
Solution selection, preliminary layout coordination and project-oriented delivery support.
Export Experience
Products exported to Asia-Pacific, the Middle East, North America and South America.
Applied Technology
Technology that fits real building air paths
Every proposal starts with the installation position and target air issue. Anenj combines HVAC integration, high-efficiency filtration, nano photocatalytic treatment, odor control and IAQ monitoring into configurations for air handling units, ducts, return-air positions, fresh-air systems and occupied rooms.
HVAC / Fresh Air
System integration
Purification modules configured for air handling units, combined air-conditioning boxes and independent fresh-air systems.
Duct / Return Air
In-system purification
Duct-mounted and return-air solutions help treat air inside central HVAC paths without taking usable room space.
Filtration
High-efficiency particle control
Filter configurations are selected around airflow, resistance limits and the particle-control requirements of the project.
Nano Photocatalytic
Supplementary treatment
Nano photocatalytic options can be configured where projects require additional treatment for odor, VOC-related concerns or microbial-control support.
Odor Control
High-load service areas
Deodorization solutions are designed for toilets, waste rooms and other public or commercial spaces with persistent odor loads.
IAQ Monitoring
Visible operating conditions
Monitoring supports informed operation with readings for PM2.5, CO2, humidity and other project-defined indicators.
Certifications, Patents & Recognition
Our Certifications, Patents & Recognition
Anenj's ISO management systems, CE conformity records, invention and utility patents, standards participation and industry recognition are available for project qualification and buyer review.
Management Systems
ISO 9001 / 14001 / 45001
Quality, environmental and occupational health and safety management system certification records.
Product Compliance
CE Attestation
Air-purification equipment conformity documentation for model families used in project evaluation and export communication.
Invention Patent
Indoor Air Purification Technology
Patent documentation supporting product development in indoor air purification and related equipment.
Patent Portfolio
Utility + Design Patents
Patents covering product structure, practical application and appearance design.
Standards
Group Standard Participation
Participation in technical standard preparation related to air quality and building ventilation.
Industry Recognition
Partner & Brand Recognition
Selected industry and partner honors reflecting long-term cooperation and market recognition.
How We Support Buyers
Bring the requirement first, then confirm the purchase path
If you are considering indoor air purification for a building, hospital, school, office or industrial site, you can share the basic requirement first. We can recommend suitable products, support preliminary layout coordination, and help define the quotation, delivery and installation path.
-
01
Requirement brief
Building type, country, area, target pollutant, timeline and existing HVAC or fresh air conditions.
-
02
Product selection
Match AHU modules, duct devices, return-air units, deodorization products or monitoring systems.
-
03
Layout coordination
Support preliminary equipment schedules and installation-position suggestions when drawings are available.
-
04
Quotation and procurement
Confirm models, quantity, customization, lead time, quotation and export document requirements.
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05
Delivery and installation path
After goods arrive, you may use your own installer or ask us to help coordinate qualified local resources where available.
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06
Operation support
Provide operation guidance, maintenance notes and monitoring suggestions for long-term use.
Technology
Patent-backed IAQ technology for building systems
Anenj's technology portfolio connects HVAC purification modules, duct and return-air structures, odor-control equipment, IAQ monitoring and certified production controls into a project-ready solution set.
Technology stack
Filtration · disinfection · deodorization · monitoring
HVAC and fresh-air integration
Box, duct-mounted and return-air purification modules are designed for AHUs, fan-coil return sections, ducts and independent fresh-air systems without occupying usable interior space.
Nano micro-electrostatic filtration
The nano micro-electrostatic high-efficiency filtration module is listed in the China Society of Refrigeration 2023 Energy-saving and Ecological Environment Product Catalogue.
Patented odor-control equipment
The wall-mounted deodorizer invention patent supports odor-control applications in toilets, waste rooms and other high-load public or commercial service areas.
Sterilization and air-quality visibility
Utility-model structures cover return-air and duct-mounted dust-removal and sterilization devices, while IAQ monitoring helps owners track PM2.5, CO2, humidity and operating status.
Wall-mounted deodorizer
Patent No. ZL 2020 1 0192215.3
Ceiling, duct and return-air devices
Patents cover constant-oxygen air purification box structure, duct-mounted dust-removal and return-air sterilization structures.
T/CAQI 203-2021
Group-standard drafting participation for building ventilation air purification and disinfection devices.
CE + ISO records
CE conformity documentation for air-purification equipment and ISO management system certification records.
Contact
Request an engineering consultation
Send a basic project brief, even if the project is still at concept stage. The team can help with product selection, preliminary solution coordination, procurement planning and installation-support options.
- Tel: 010-67884749
- Mobile: 13911386113
- Hotline: 4001818418
- Email: anenj2009@163.com
- 5F, Building 1, No. 2 Courtyard, Dize South Street, Beijing Economic-Technological Development Area, Beijing, China