1 Types of Air Dampers

Air dampers come in various types, each serving a specific function:

1. Manual Volume Control Dampers (VCDs) – The most basic type, operated by a lever or handle, allowing manual adjustment of airflow. Commonly used in residential and light commercial HVAC systems where frequent adjustments aren’t necessary.

2. Motorized Control Dampers – Automated dampers controlled by thermostats or building automation systems (BAS). These are ideal for smart HVAC systems where precise airflow regulation is needed without manual intervention.

3. Fire Dampers – Critical for fire safety, these dampers automatically close when high temperatures are detected, preventing the spread of flames and smoke through ductwork. They are required by building codes in commercial and high-rise structures.

4. Smoke Dampers – Similar to fire dampers but specifically designed to block smoke in case of a fire. They are often integrated with fire alarm systems for immediate response.

5. Backdraft Dampers (Non-Return Dampers) – Allow airflow in one direction only, preventing backflow. Commonly used in exhaust systems, kitchen vents, and bathroom fans to avoid contamination from reverse airflow.

6. Butterfly Dampers – Used in circular ducts, these dampers have a rotating disc that opens or closes to regulate airflow. They are often found in industrial ventilation systems.

7. Louvre Dampers – Feature adjustable blades for fine-tuned airflow control, commonly used in commercial air handling units (AHUs) and outdoor air intakes.

2 Key Uses of Air Dampers

• Airflow Regulation – Ensures balanced air distribution in HVAC systems.

• Energy Efficiency – Prevents overworking HVAC units by controlling air volume.

• Fire & Smoke Protection – Critical for life safety in buildings.

• Zone Control – Allows different areas in a building to have customized temperature settings.

• Contamination Prevention – Backdraft dampers stop polluted air from re-entering clean spaces.

3 Why Are Air Dampers Important?

1. Improves HVAC Efficiency – Properly functioning dampers reduce energy waste by ensuring conditioned air is directed where needed.

2. Enhances Indoor Air Quality (IAQ) – Prevents stale air buildup and ensures proper ventilation.

3. Ensures Fire Safety – Fire and smoke dampers are legally mandated in many buildings to comply with safety codes.

4. Reduces Operational Costs – Automated dampers optimize airflow, lowering electricity consumption.

5. Extends HVAC Lifespan – Prevents strain on fans and motors by maintaining balanced airflow.

     Air dampers may seem like small components, but they play a massive role in HVAC performance, safety, and energy management. Whether you’re installing a new ventilation system or maintaining an existing one, choosing the right type of damper—be it manual, motorized, fire-rated, or backdraft—can make a significant difference in efficiency and compliance.

4 Factors Affecting Air Damper Prices

Several factors influence the cost of air dampers:

✅ Material – Stainless steel is more expensive than galvanized steel.
✅ Size – Larger dampers cost more.
✅ Automation – Motorized dampers are pricier than manual ones.
✅ Brand – Premium brands (DAIKIN, Carrier, TROX) have higher prices.
✅ Fire/Smoke Ratings – Fire-rated dampers are more expensive due to safety compliance.

5 2024 Air Damper Price List in the Philippines

Here’s an updated price table based on supplier data, manufacturer catalogs, and construction material databases: