The PAC4A Series 100% Fresh Air Packaged Air Conditioner is a compact, self-contained cooling solution engineered specifically for fresh air applications. Designed to deliver 100% conditioned outdoor air, this unit is the ideal choice for commercial, institutional, and industrial environments where continuous fresh air supply is a ventilation and indoor air quality requirement.Available in capacities ranging from 6 to 40 TR (21 to 140 kW), the PAC4A Series covers a wide spectrum of project sizes – from small retail outlets and restaurants to large commercial complexes, hospitals, schools, and manufacturing facilities.
Every unit integrates a high-performance cooling coil, heavy-duty blower, multi-stage filtration system, and drive motor within a single, factory-assembled enclosure. This self-contained design simplifies installation, reduces on-site labour, and ensures consistent, long-term performance with minimal maintenance requirements.Charged with environment-friendly R-410A refrigerant, the PAC4A Series is built to meet modern environmental and energy standards while delivering reliable cooling in even the most demanding climates.
| Product Information | |
|---|---|
| Series | PAC4A |
| Installation | Indoor / Outdoor / Rooftop |
| Capacity Range | 6 – 40 TR (21 – 140 kW) |
| Refrigerant | R-410A (Environment-friendly) |
| Blower Type | Heavy-duty centrifugal blower |
| Filtration | Bag filter + Pre-filter |
| Moisture Eliminator | PVC blade, droplet trap design |
The PAC4A Series is engineered as a fully self-contained system, integrating all critical components within a single robust enclosure:
- High-performance cooling coil – Optimised fin-and-tube design for maximum heat transfer and efficient fresh air cooling
- Heavy-duty centrifugal blower – Built for continuous-duty operation, delivering consistent airflow even against high external static pressure
- Multi-stage filtration – Bag filter combined with a pre-filter to capture fine and coarse particulates, protecting both the unit internals and the conditioned space
- Integrated drive motor – Energy-efficient motor selected for long operational life and low maintenance requirements
- Compact footprint – Factory-assembled in a space-optimised enclosure, reducing installation time and on-site coordination
Advanced Filtration System
Indoor air quality begins with effective filtration. The PAC4A Series incorporates a two-stage filtration arrangement:
- Pre-filter – Captures large airborne particles such as dust, sand, and debris, extending the service life of the main filter and protecting internal components. Essential for dusty environments across the UAE and GCC.
- Bag filter – High-efficiency pocket bag filters provide superior filtration performance, removing fine particulates including PM10 and PM2.5 from the incoming fresh air stream.
This dual-stage approach delivers cleaner supply air, reduces the frequency of filter changes, and lowers the total cost of operation – making it highly suitable for environments with high outdoor dust levels, such as those across the Middle East.
Moisture Eliminator
One of the critical challenges in 100% fresh air cooling – especially in humid climates – is managing condensate carry-over from the cooling coil. The PAC4A Series addresses this with a purpose-engineered moisture eliminator:
- PVC blade construction – Lightweight, corrosion-resistant, and easy to clean
- Specially profiled blade geometry – Designed to change the direction of airflow multiple times, causing water droplets to separate from the air stream and collect on the blade surfaces
- Effective droplet separation – Prevents moisture carry-over into ductwork, protecting downstream components and maintaining dry supply air conditions
- Low pressure drop – Profile optimised to minimise resistance to airflow, preserving system efficiency
This feature is particularly critical in coastal UAE environments where ambient humidity levels regularly exceed 80%, ensuring consistently dry and comfortable supply air year-round.
R-410A Refrigerant – Eco-Friendly Performance
The PAC4A Series operates on R-410A, a hydrofluorocarbon (HFC) refrigerant with zero ozone depletion potential (ODP):
- Zero ODP – No contribution to ozone layer depletion, compliant with international environmental regulations
- High energy efficiency – R-410A operates at higher pressures, enabling more efficient heat transfer and better cooling performance
- Widely available – Established supply chain across the UAE and GCC for easy maintenance and refrigerant top-up
- Compliant with UAE regulations – Meets the environmental standards set by UAE Ministry of Climate Change and Environment
Applications
The PAC4A Series is the preferred fresh air cooling solution for a wide range of commercial and institutional applications:
- Commercial Buildings – Offices, retail stores, shopping centres, and mixed-use developments
- Hospitality – Hotels, resorts, restaurants, and food & beverage outlets
- Healthcare – Hospitals, clinics, and pharmacies requiring continuous fresh air supply
- Educational Institutions – Schools, universities, auditoriums, and lecture halls
- Industrial Facilities – Factories, warehouses, and production areas requiring ventilation cooling
- Transportation – Bus terminals, metro stations, and airport lounges
- Mosques & Places of Worship – Large-volume spaces requiring quiet, effective fresh air conditioning
- Sports & Recreation – Gyms, sports halls, and indoor courts
Why Choose a 100% Fresh Air Packaged AC Unit
In many commercial and public spaces, recirculated air is insufficient to meet ventilation requirements set by ASHRAE 62.1, local civil defence codes, and health regulations. A dedicated 100% fresh air packaged unit addresses this by:
- Supplying only conditioned outdoor air eliminating the recirculation of stale or contaminated indoor air
- Meeting mandatory outdoor air ventilation rates for occupancy-based spaces such as restaurants, gyms, and classrooms
- Preventing the buildup of CO₂, VOCs, and airborne pathogens in occupied spaces
- Supporting positive pressurisation of spaces to prevent infiltration of unconditioned or contaminated air
- Simplifying system design by combining fresh air intake, cooling, filtration, and supply into a single self-contained unit
