Dual Duct Mixing Calculator

Calculate mixing ratios for dual duct HVAC systems with hot and cold decks.

Supply air temperature from cold deck.
°F
Supply air temperature from hot deck.
°F
Desired zone temperature.
°F
Total airflow to zone.
CFM

Results

Cold Deck Airflow-CFM
Hot Deck Airflow-CFM
Cold to Hot Ratio-
References: ASHRAE Handbook - HVAC Systems and Equipment, Chapter 20 (Dual Duct Systems)