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Installation of bathroom fan and assembly tips

In this expert article we talk you through the dos and don'ts of installing a bathroom fan yourself. Many of these tips can, of course, also be used when connecting other, similar, fans.


Can I install a bathroom fan?
Yes, this is certainly possible. We recommend that you take the four general assembly and installation tips mentioned earlier into account. See below what else you can take into account before or after purchasing a bathroom fan.



Assembly position of a bathroom fan

Decide in advance where you want to place the fan. Take into account the different zones in the bathroom, the thickness of the wall, extraction options to the outside, the length of the duct to the outside and the diameter of the (existing) pipe.


Maximum length of duct connection
A bathroom fan is very suitable for extracting air to the outside over a short distance – this can be done via a fixed duct, pipe or flexible hose. The maximum recommended length of a pipe is 1 to 1.5 metres. The reason for this is that otherwise the fan has too little power to push the air outside. Our advice is to use a bathroom fan with a larger connection diameter such as 125mm or 150 mm, if possible.


Zone 1 near bathroom
For safety reasons, bathroom fans in a bathroom or wet room may not be installed in Zone 1. There is a risk of water damage and the associated short circuit. If you do not have a choice then you have two options – placing a fan with a transformer (not every fan is suitable for this) or another type of fan higher up in the duct, for example a tube fan, pipe fan or mechanical ventilation.


Fig. different safety zones in a bathroom


The electrical connections for a bathroom fan

All connections L, N and, if present, S or T must be connected according to electrotechnical guidelines.


  • L stands for Phase. Often a brown wire that is always under voltage.
  • N stands for Neutral. Often a blue wire with no voltage on it.
  • S or T (if present) stands for connecting wire. Often a black wire where voltage is applied as soon as the switch is converted. Usually this wire is used in combination with the light or separate (series) switch.

Please note: If you work with electricity, always make sure you have the power off during assembly – this is for your own safety.



The difference between brands

Each brand has its own connection and characteristics. In general we can say that bathroom fans with the moisture sensor and motion sensor (without switching them separately) functions should be connected differently depending on the brand, namely:


Airroxy
Connections L and N are sufficient for automatic operation


Europlast
All available connections L, N and S or T must be connected for automatic operation


Vent-Axia
Connections L and N are sufficient for automatic operation.
The Vent-Axia Svara bathroom fan can be set up by means of an app and can be operated if desired.


View all bathroom fans here


Conclusion and tips

  • A bathroom fan is easy to install yourself
  • Use our installation videos and product specifications
  • Before purchasing, check out our Decision Tool or let us inform you
  • For your safety, the power should be switched off when connected electrically
  • When installed in Zone 1, a bathroom fan with transformer must be installed operating at 12V















Four general assembly and installation tips when installing a fan

1. Location

When installing a new fan (no replacement), first assess whether there is sufficient space to install a fan. Take into account the length, width, height and depth of the fan, as well as any pipe and electrical connections and, in the case of heat recovery, the condensation drain.

2. Specifications

When replacing a product, it is important to know in advance what the properties of the old product to be replaced are. Why? Because after purchase you will always have a product that fits your needs. For example: connection diameters, length, width, height and depth, but also the electrical connection (perilex, earthed or euro plug).

3. Manual and installation videos

Most manufacturers send a (installation) manual with the product. However, we recommend that you read the installation manual before purchasing in order to answer any questions or to prepare for installation. Then use our data enrichment. We have added (installation) manuals and/or brochures to 99% of all fans. These are .pdf files and can be downloaded directly from our website. These files can be found on the product pages under the heading "documents". If you prefer to watch a product video, please click here.

4. Safety

Last but not least, safety is the most important issue during installation. Installing a fan, with safe products, in a safe environment. Here are the three most important points:

• Before making any electrical connections, switch off the power/electricity
• Do you need to install the fan at height? Use scaffolding or sturdy stairs, always make sure to use a flat, non-slippery surface
• Work with certified/well-working tools

















View also:

Four general installation tips

Installation and assembly tips for mechanical ventilation

Installation and assembly tips for heat recovery ventilation systems

Installation and assembly tips for (spiral) tubes and fittings




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