How to select the correct fan |
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| How to work out the size and type of fan required: |  Download PDF file |
| In order to provide adequate ventilation for a given application, it is essential the correct size, type and number of Hydor units are selected. Selection of the correct fan depends on two principal factors: the performance and application. |
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| Step 1 | |
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| Determine which mounting arrangements meet your requirements | |
| Step 2 | |
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| Calculate the VOLUME of the room in cubic metres (m3) by multiplying the length x width x height. | |
| Step 3 | |
| Select the type of room from the AIR CHANGE GUIDE and how many air changes (AC/H) are required. | |
| Step 4 | |
| Use the following formula: Volume (m3) x AC/H = Airflow (m3/h) | |
| Step 5 | |
| Use the catalogue to select a fan that does the airflow you require. | |
Air Change Guide |
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| COMMERCIAL | AC/H | DOMESTIC | AC/H |
| Assembly rooms | 4 - 8 | Bathroom | 6 - 10 |
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Bakeries |
20 - 30 | Bedroom | 2 - 4 |
| Banks | 3 - 4 | Cellar | 4 - 8 |
| Cafes, Coffee Bars | 10 - 12 | Garage | 6 - 8 |
| Canteens | 5 - 10 | Kitchen | 10 - 15 |
| Conference Rooms | 8 - 12 | Laundry Room | 10 - 15 |
| Dance Halls | 6 - 8 | Toilet | 8 - 12 |
| Entrance Halls | 3 - 5 | ||
| Hair Dressing Salons | 10 - 15 | ||
| Laundries | 15 - 30 | ||
| Lavatories | 8 - 15 | ||
| Libraries | 3 - 5 | ||
| Offices | 4 - 8 | ||
| Photo dark rooms | 10 - 15 | ||
| Recording Studios | 10 - 12 | ||
| Restaurants | 6 - 10 | ||
| School rooms | 2 - 4 | ||
| These values must not take the place of any regulation requirements and can be modified for particular applications. | |||
| Dependant on volume one or more fans may need to be selected | |||
