Shopping Mall Ventilation Solution: How We Helped a Large Retail Center Eliminate Kitchen Smoke and Cut Energy Costs

Last summer, a 60,000-square-meter shopping mall in Bangkok faced a growing tenant complaint: the third-floor food court and basement supermarket were becoming unbearable. With 80+ restaurant stalls operating daily, cooking fumes and stagnant heat accumulated in the common dining area. Meanwhile, the underground supermarket suffered from musty air and poor circulation. The mall’s central HVAC system ran at maximum capacity 24/7 – but the problems only got worse.

Three critical issues forced management to seek a professional shopping mall ventilation solution:

First, lingering kitchen smoke and grease particles drifted into the retail corridors, irritating customers’ eyes and throats. Several boutique tenants even threatened to leave unless the air quality improved.

Second, electricity bills soared as the mall kept increasing fresh air makeup to dilute pollutants. Energy costs rose by nearly 40% year-over-year, but CO₂ levels still exceeded healthy limits in peak hours.

Third, noise from existing exhaust fans (often >80 dB(A)) annoyed shoppers near the back-of-house areas. The mall needed a quieter, more efficient ventilation approach.

Our engineering team conducted an on-site survey. We found that the central HVAC’s air handling units were undersized for the restaurant exhaust load. The solution was not to add more chilled water coils, but to install decentralized, high-static-pressure exhaust fans directly at each kitchen cluster and loading bay.

Given the grease-laden air and need for easy cleaning, we recommended the Popula CF Series Multi-Wings Centrifugal Fans for their corrosion-resistant construction, balanced impeller, and low-noise operation.

We deployed a zone-based ventilation upgrade:

Zone	Model	Quantity	Key Parameters	Function
Food court kitchen exhaust	CF-4A	8 units	4 kW, 2300-3150 m³/h, ≤62 dB(A)	Capture grease fumes at source
Supermarket loading bay	CF-3.5A	4 units	3 kW, 3233-5000 m³/h, ≤73 dB(A)	Remove truck exhaust and musty air
Basement public restrooms	CF-2.5A (low speed)	6 units	0.75 kW, 1400-2300 m³/h, ≤65 dB(A)	Quiet continuous ventilation

All CF fans were mounted on vibration-damping brackets, with flexible duct connections to prevent grease accumulation. The food court units were interlocked with cooking hood sensors to run only during peak hours, saving additional energy.

One month after installation, the mall’s facility manager reported outstanding results:

• Kitchen smoke complaints dropped by 90%; retail corridor air quality returned to acceptable levels.

• Total ventilation-related energy consumption fell by 32%, as the central HVAC fresh air damper could be partially closed thanks to the dedicated exhaust.

• Noise levels near the food court back-of-house are now ≤65 dB(A) – no more shopper complaints.

  
  

Is your shopping mall struggling with lingering kitchen smoke, high energy bills, or stuffy underground areas? The Popula CF Series offers a proven, low-noise, energy-saving solution. Contact our engineering team today for a free ventilation assessment and tailored airflow layout for your retail space.