Displacement ventilation delivers cool air at low velocity near the floor so it rises naturally as it warms. This creates a stratified airflow where cleaner, cooler air stays in the occupied zone while warmer air and contaminants rise to the ceiling for exhaust.
/dɪsˈpleɪsmənt ˌvɛntɪˈleɪʃən/
Displacement ventilation delivers cool air at low velocity near the floor so it rises naturally as it warms. This creates a stratified airflow where cleaner, cooler air stays in the occupied zone while warmer air and contaminants rise to the ceiling for exhaust.
How does displacement ventilation work?
It supplies cool air at floor level so it rises as it warms, keeping clean air where people breathe.
Source: The Cooling Company
Displacement ventilation keeps fresh air in the breathing zone.
Large spaces like auditoriums or airports use displacement ventilation to improve air quality and comfort with less fan energy.
Place heat sources and furniture carefully so low‑level air can rise without short‑circuiting to exhaust.
“Place heat sources and furniture carefully so low‑level air can rise without short‑circuiting to exhaust.”
Displacement ventilation has been used in Scandinavia for decades for energy‑efficient comfort.
Is displacement ventilation better than mixing ventilation?
It can be for large spaces, offering better air quality and lower fan energy when designed properly.
Does displacement ventilation work in small rooms?
It’s less common in small rooms due to diffuser space needs and limited stratification.
Can displacement ventilation reduce HVAC energy use?
Yes. It often uses lower supply airflow and higher supply temperatures to save energy.
Need help with displacement ventilation? Our licensed technicians in Las Vegas are ready to assist.
Fill out the form below. We typically respond within minutes.
