Extractor Fan Size Calculator – Find the Right Size for Your Room

Use this calculator to determine the correct extractor fan size (m³/hr) for your space. Simply enter your room details, and we’ll estimate the required airflow and recommend a suitable fan.

What Type of Room Needs Ventilation?
Ventilation Requirement (Air Changes per Hour - ACH)
Not sure what to pick? Choose based on your room type and usage:
Ducting Length

Want a Copy of Your Results?

Enter your details below to receive your extractor fan calculation by email. If you’d like an electrician to help with installation, check the box, and they’ll be in touch.

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