Pre Cooling Air Unit ( PAU )
Expert Pre Cooling Air Unit (PAU) Service for Industrial HVAC Systems
Pre Cooling Air Unit ( PAU )
A Pre-Cooling Air Unit (PAU)—also known as a Primary Air Unit in HVAC terminology—is a specialized ventilation system designed to pre-treat outdoor fresh air before it reaches the main Air Handling Unit (AHU). The PAU typically performs initial filtration, dehumidification, and slight cooling of the incoming air, preparing it for more efficient conditioning by the AHU. Unlike a full-fledged cooling system, the PAU focuses on air quality and pre-conditioning, especially in environments where outdoor air intake is high.
PAU systems are particularly valuable in extreme climate conditions and are widely used in commercial, industrial, and institutional buildings. By handling the initial air treatment load, the PAU reduces the energy burden on the AHU, resulting in improved efficiency and lower operational costs. These units are generally constructed in two types: Roof-Top (Ceiling Suspended Ducted) Units for compact installations, and Floor-Mounted Units that can be tailored to meet specific airflow and treatment requirements.
Reliable Pre Cooling Air Unit (PAU) Services in Mumbai
At ZenVent Engineering, we specialize in Pre Cooling Air Unit (PAU) Service for industrial and commercial HVAC systems. Our PAUs are designed to enhance cooling efficiency, maintain air quality, and optimize overall system performance.
Whether you need installation, repair, or maintenance, our team ensures your PAU operates at peak efficiency.
Our PAU Service Offerings
PAU Installation
We design and install high-performance Pre Cooling Air Units tailored to your facility’s specific cooling needs.
PAU Repair & Troubleshooting
Quick and effective repairs to restore your PAU’s cooling capacity and reduce downtime.
PAU Maintenance & AMC
Comprehensive Annual Maintenance Contracts to ensure long-term performance and prevent breakdowns.
Applications of Pre Cooling Air Units
Our Pre Cooling Air Unit (PAU) solutions are designed for diverse environments, delivering improved cooling performance, energy efficiency, and indoor air quality.
Industrial HVAC Systems
Integrated with our Chiller Servicesfor enhanced system cooling.
Commercial Buildings
Combined with our Air Handling Units (AHU)for reliable cooling and ventilation.
Clean Rooms & Labs
Maintains precise temperature and airflow control in sensitive environments like labs and pharma units.
Warehouses & Manufacturing Units
Provides enhanced cooling efficiency for large-scale storage and production environments.
Frequently Asked Question
A PAU (Pre-Cooling Air Unit), also referred to as a Primary Air Unit, is a ventilation system component designed to pre-treat outside fresh air before it enters the main Air Handling Unit (AHU). Its main functions include:
What exactly does “pre-cooling” mean in a PAU?
It refers to reducing the temperature (and often humidity) of outdoor fresh air somewhat before it enters the main AHU. This lowers the workload on downstream systems.
How much load reduction can a PAU provide to the AHU?
It depends on climate, outdoor air conditions, airflow rate, and how well the PAU is designed. In hot, humid climates, the reduction can be significant, leading to noticeable savings.
What factors should be considered when sizing a PAU?
Key factors include the volume of fresh air required, local climate (temperature, humidity), pollutant/dust levels, how much pre-treatment is needed (filtration, dehumidification), space constraints, and expected operating hours.
Can PAUs be retrofitted into existing HVAC systems?
Yes, in many cases PAUs can be added to existing AHU setups. ZeVent Engineering can evaluate your existing ducting, space, and needs to design a retrofit solution.
Book Your Pre Cooling Air Unit Service in Mumbai
Ensure your Pre Cooling Air Unit operates at its best with ZenVent Engineering’s professional services. From installation to repair and maintenance, we deliver reliable results every time.
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