Last verified: January 2026

FM200 & CO₂ Gas Suppression Calculator 🧯

Calculate the required quantity of FM-200 (HFC-227ea) or CO₂ for total flooding fire suppression systems. Based on NFPA 2001 guidelines for clean agent fire extinguishing systems.

📐 Room Dimensions

🧪 Select Agent Type

💨
FM-200
Safe for occupied spaces
⚠️
CO₂
Unoccupied areas only
FM-200: 7-8.5% typical | CO₂: 34-75% typical

📊 Calculation Results

🧯

Enter room dimensions and click Calculate to see results

📋 Design Concentration Guide

FM-200 (HFC-227ea)

Hazard Class Concentration
Class A (Surface) 7.0%
Class A (Deep Seated) 7.9%
Class B (Flammable Liquids) 8.5%
NOAEL (No Observable Adverse Effect) 9.0%

CO₂ Total Flooding

Application Concentration
Class A Materials 34%
Electrical Equipment 50%
Flammable Liquids 34-75%

📚 References & Standards