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FACTORY ACCEPTANCE TEST (FAT)
As part of our capability as a leading AHU manufacturer, we can offer our customers comprehensive Factory Acceptance Testing (FAT) services.
FAT testing of units offers a valuable tool for customers to validate the performance of HVAC equipment. HUBER & RANNER understands the value this provides to customers and has developed extensive in-house testing capabilities to support FAT inspections.

During the project planning phase, simply discuss your requirements with your contact at HUBER & RANNER and let us take care of the rest.
WHY UNDERTAKE A FACTORY ACCEPTANCE TEST?
At HUBER & RANNER, quality assurance is at the heart of our manufacturing process. Our Factory Acceptance Test (FAT) services guarantee that every air handling solution we deliver meets the highest standards of performance, safety, and compliance. Conducted in accordance with EN 1886 specifications, our rigorous testing procedures ensure that your equipment is fully verified before it leaves our factory. We can also work with customers to provide customised FAT protocols that meet their specific project requirements.
Factory Acceptance Tests are critical in providing peace of mind for customers on critical projects, and also serve as a good way to make sure requirements are aligned between design and manufacturing teams. In some cases regulations may mandate them, in the case of GMP compliance for pharmaceutical production facilities
OUR CAPABILITY
KEY TESTING CAPABILITIES
Our FAT service includes comprehensive testing across critical performance parameters, mostly in line with European standard EN 1886 testing requirements, including:
Air Flow Rate: Measurement of total air flow rate at the design condition.
Fan Static Pressure: Measurement of fan static pressure.
Motor Performance: Measurement of motor electrical performance at the design condition.
Casing Mechanical Strength: Measurement of panel deflection under varying internal-to-external pressure differentials.
Air Leakage: Measurement of casing air leakage according to EN 1886 test protocols.
Visual and Functional Inspection: Detailed visual checks for component alignment, electrical connections, and overall build quality.
Acoustic Performance: Testing of equipment noise levels (casing break-out noise) under operating conditions.
PRECISION TESTING FACILITIES
Our state-of-the-art testing facilities are equipped with the latest technology to perform all necessary checks with precision and reliability. From modular air handling units to custom HVAC solutions, every product is meticulously tested to validate its compliance with EN 1886 and your project specifications.
TRANSPARENT REPORTING AND CUSTOMER WITNESSING
We believe in transparency and customer involvement. Clients are welcome to participate in the FAT process, witnessing first-hand the quality and reliability of their systems. We also provide detailed test reports documenting every stage of inspection and verification.
Trust HUBER & RANNER’s Factory Acceptance Test (FAT) services to deliver HVAC solutions that are proven, tested, and ready to perform.