Preventive maintenance of MEP Equipment

How VAV and CAV Work

Introduction

VAV (Variable Air Volume) and CAV (Constant Air Volume) are two types of HVAC systems used to control the temperature and airflow in buildings. Understanding how these systems work is essential for optimizing energy efficiency and maintaining comfortable indoor environments.

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Variable Air Volume (VAV) Systems

Energy Efficiency: Adjusts airflow based on demand, reducing energy consumption.
Temperature Control: Provides precise control over the temperature in different zones.
Flexibility: Ideal for buildings with varying occupancy levels and heat loads.

Constant Air Volume (CAV) Systems

Simple Operation: Maintains a constant airflow rate while adjusting the temperature.
Reliability: Fewer moving parts result in lower maintenance requirements.
Consistent Airflow: Provides uniform air distribution throughout the building.

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