Customer Case | From New Construction to the Existing-Building Market: Fan Selection for Outdoor Fresh Air Units
In recent years, as the real estate industry has continued to decline, the number of new projects has decreased, putting pressure on the growth of traditional central fresh air system business. Against this backdrop, the demand for existing-building renovation and ventilation upgrades in completed properties has gradually attracted market attention, and outdoor fresh air units have also become a new direction for some companies to expand into incremental markets.
Compared with traditional central fresh air systems, outdoor fresh air units do not require extensive renovation of interior finishes and can be installed directly on building facades or balconies. They are therefore better suited to ventilation upgrades in occupied residences and completed projects, providing a more flexible fresh air solution for existing buildings.
Project Background
From Existing-Market Expansion to Outdoor Fan Selection
The customer has long specialized in commercial whole-house central fresh air systems, with its core business focused on supporting new high-end residential real estate projects. Products are typically pre-installed and delivered at the unfinished stage. As the structure of the real estate market has changed, the customer has actively expanded into the existing-building market, positioning outdoor fresh air units as a new growth area to meet ventilation needs in completed buildings and renovation projects.
Compared with traditional fresh air systems installed indoors, outdoor fresh air units need to take into account airflow, static pressure, noise, energy consumption, and adaptability to outdoor environments, while also meeting complete-unit design requirements such as compact size and intelligent control. This places higher demands on fan performance and environmental adaptability.
Fan Solution
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High-Efficiency EC Fans for Performance and Outdoor Operating Conditions
After comparing and selecting products from multiple options, the customer ultimately selected Blauberg Motoren's single-inlet forward curved centrifugal EC fans, covering the three mainstream sizes of 120, 140, and 160 to meet the requirements of fresh air units across different airflow ranges.
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High Efficiency and Low Noise to Meet Complete-Unit Performance Requirements
To meet the customer's comprehensive requirements for high static pressure, low noise, and low energy consumption, Blauberg Motoren adopted a product solution combining an EC motor with a high-efficiency impeller.
Compared with traditional AC fans, Blauberg Motoren's EC fans, featuring permanent magnet synchronous motors and high-efficiency impeller designs, can achieve an approximately 30% increase in overall efficiency and reduce operating noise by 5–8 dB(A). They also feature intelligent interfaces such as stepless speed control and 0–10 V/PWM signal control, better meeting the requirements for compact size, low energy consumption, and easy control in outdoor units.
Blauberg Acoustics Laboratory
Customized Services to Enhance Electrical and Motor Protection
For the special operating conditions of outdoor installation, Blauberg Motoren further provides in-depth customized solutions:
▲ Full potting of the control board: The control board is fully sealed with highly thermally conductive potting compound, effectively protecting it against condensation, salt spray, and accidental water ingress, and significantly improving electrical reliability in humid outdoor environments;
▲ Motor protection rating up to IP57: By optimizing bearing seals, housing joints, and cable outlet structures, the motor achieves an IP57 protection rating against dust and water ingress, enhancing the product's protection against dust and water penetration and providing greater environmental adaptability for outdoor applications.
Delivery and Support
Comprehensive Support from Prototype Validation to Full Certification
Fast Delivery to Support New Product Development
With lean supply chain management and flexible production scheduling, Blauberg Motoren provides strong support for the customer's rapid market expansion:
▲ Sample delivery: After the drawings and technical parameters are confirmed, qualified prototypes can be shipped within as little as 3 working days, supporting the customer's rapid installation and validation;
▲ Bulk delivery: Standard orders, typically ranging from several hundred to several thousand units, have a stable lead time of less than 1 month, while urgent orders can be shortened to 20 days;
Comprehensive Documentation and Certifications to Support Market Expansion
Blauberg Motoren's 120/140/160 series single-inlet EC fans are supplied with complete bilingual Chinese-English specifications, covering detailed technical information such as performance curves, dimensional installation drawings, and electrical wiring definitions, facilitating complete-unit calibration and technical communication with overseas customers.
In terms of certifications, Blauberg Motoren products have passed the three major certifications of CE, RoHS, and CCC, while the motor section complies with UL/cUL standards. This provides the customer with relevant compliance support for bidding on domestic high-end residential projects and expanding into markets in Europe, Southeast Asia, Latin America, and other regions, significantly reducing the time and cost associated with certifications across multiple countries.
Project Results
Supporting the Rapid Market Launch of Outdoor Fresh Air Units
The customer's new products received positive market feedback after launch. Within just 3 months, cumulative online and offline SKU sales reached a new milestone.
In actual installation, outdoor fresh air units do not require suspended ceilings or complex ductwork, and installation time can be reduced to approximately one-fifth of that required for traditional central fresh air systems, providing a more flexible installation method for ventilation upgrades in completed and occupied buildings. At the same time, the product's low-noise operation also received positive feedback from end users, with no significant disturbance during nighttime operation.
The customer's R&D manager stated: "This series of outdoor fresh air products has become the company's fastest-growing product line. The fan's performance margin and protection reliability are key advantages."
Conclusion
This cooperation was more than a standard fan selection; it was also a customized solution provided by Blauberg Motoren for the customer's new product, new application scenario, and new market.
As fresh air applications gradually expand from new construction projects to existing buildings, completed-property renovations, and other scenarios, fan products also need to achieve a better balance among performance, noise, energy consumption, environmental adaptability, and customization capabilities.
Blauberg Motoren will continue to focus on customers' actual application needs and provide full-process support from product selection, customized development, and prototype validation to bulk delivery, offering more suitable fan solutions for fresh air and air handling equipment.
