Bathroom Wall Extractor Fan Installation

If you have access to the attic the fan can vent either through a gable wall or roof.

Bathroom wall extractor fan installation.

How to fit and install a bathroom extractor fan with or without a timer. The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need. The kind you see on countless bathroom walls with a grille and a spinning fan blade behind. Avoid venting through a soffit vent or ridge vent.

Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. These fans usually extract around 95 m3 h metres cubed per hour and are perfect for installations directly through a wall. Place the fan in the cut out hole so that the bottom edge of the fan is flush with the bottom of the ceiling drywall. A more powerful fan will be able to remove the moisture faster and a larger room can hold more moisture.

Before commencing the installation of your wall fan you will need to firstly decide on the location of the wall fan and then using your cable detector check for any existing wiring or metal that may be lurking beneath the surface. To install a bathroom fan go into your attic and clear away the insulation where the fan will go then return to the bathroom and use a jigsaw to cut out the hole for the fan. Lower the fan into place and secure it with drywall screws then use flexible duct pipes to vent the fan to the outside. And under while medium bath fans work well for bathooms 70 to 100 sq ft.

An axial fan is what most people picture when they think of a bathroom extractor fan. Install your extractor fan close to the primary source of odour or moisture. Attach the bathroom fan to the joist. In this video i give a step by step guide of how to fit install and wire a bathroom.

It is worth noting that the installation process is a bit involving and might require a lot more engagement considering that it entails removing some drywall drilling through joists and busting through an exterior wall or roof. When considering how to install an extractor fan for the first time follow these tips and extractor fan regulations. But it must keep it out of arms reach spray distance of the bath and shower. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent.

So if you have a larger bathroom a more powerful extractor fan may be needed. Access the attic and bring your light cordless drill screws and bathroom fan housing. You will need a partner for this step as you cannot see the ceiling from this position. For bathroom over 100 sq ft use a large or exhaust fan to circulate the air.

An average size bathroom would typically have an extractor fan with a rating of at least 80 cfm. Air must be vented outside.