AHD (no show diffuser) 4 inches

Select Your Room Type

Home

1.5 ACPH

Bedroom

1.5 ACPH

Dressing Room

2 ACPH

Powder Toilet

10 ACPH

Toilet

12 ACPH

Public Toilet

14 ACPH

Office Block

1.5 ACPH

Hostel

2 ACPH

Kitchen

6 ACPH

Basement (AC)

2 ACPH

Basement (No AC)

4 ACPH

Pantry

6 ACPH

Restaurants

2 ACPH

Workstation

2 ACPH

Server Room

5 ACPH

Terms & Conditions

Welcome to the Duct Fan Size Calculator by Astberg Ventilation Pvt Ltd.

Calculator Purpose: For informational purposes only — not a substitute for professional HVAC advice.

Accuracy: Results are estimates. Verify with a qualified engineer before installation.

Liability: Astberg Ventilation Pvt Ltd. accepts no responsibility for decisions based on these results.

Usage: For personal or internal use only. Commercial reproduction requires written authorisation.

Contact: info@astbergventilation.com | +91 8288075301

Last Updated: 29-12-2023 — Astberg Ventilation Pvt Ltd.

Duct Fan Size Calculator

Find the perfect ventilation solution for your space

Unit of Measurement

Room Dimensions (feet)

Air Changes Per Hour (ACPH)

CMH

—

m³ per hour

CFM

—

ft³ per minute

AHD (no show diffuser) 4 inches

Astberg AHD-100 "No Show" Air Vent Diffuser (4 Inch)