What is a typical face velocity for cooling coils?

Typical face velocity ranges from 2.0-3.0 m/s (400-600 fpm). Higher velocities increase pressure drop and risk of moisture carryover.

How many rows are needed for a cooling coil?

Usually 4-8 rows depending on required capacity. More rows = more cooling but higher pressure drop.

What FPI is standard for HVAC coils?

Standard fins per inch (FPI) ranges from 8-14. Higher FPI increases capacity but also pressure drop.

MEPBase Tools - Cooling Coil Selection Calculator

Last verified: January 2026

Cooling Coil Selection Calculator 🧊

Size AHU cooling coils based on cooling load, air flow, and chilled water conditions. Calculate face area, number of rows, water flow rate, and estimated pressure drop.

❄️ Cooling Requirements

Total Cooling Capacity

Air Flow Rate

🌡️ Air Side Conditions

Entering Air Dry Bulb (EAT)

Leaving Air Dry Bulb (LAT)

°C

Entering Air RH

💧 Chilled Water Side

CHW Supply Temperature

°C

CHW Return Temperature

°C

📊 Coil Selection Results

🧊

Enter parameters and click Calculate

📋 Design Guidelines

Face velocity: 2.0-3.0 m/s typical
Rows: 4-8 for cooling coils
FPI: 8-14 typical
CHW ΔT: 5-6°C standard
Approach temp: 1-2°C minimum

📚 References & Standards

ASHRAE Handbook - HVAC Systems and Equipment
ARI Standard 410 - Forced-Circulation Air-Cooling Coils
AHRI Standard 340/360 - Performance Rating