Installing a bathroom exhaust fan can be a simple procedure, however careful thought must go in to the positioning of the fan before you get out the hacksaw and cut a hole in your ceiling! A common question we receive at Pure Ventilation HQ is ‘where should I position my bathroom exhaust fan?’ read below for some of our recommendations:
Firstly you want to ensure the location of the fan provides good air flow through the room. Mechanically exhausted air needs to be replaced with dry fresh air – this is usually drawn from the small gap under the door, a vent in the door or possibly a window. Ideally the exhaust fan would be positioned opposite this source of fresh air which promotes a cross flow of ventilation. This ‘cross breeze’ will assist greatly in removing the steam, vapor and odors from the room.
Secondly consider a location that allows for the shortest, most direct route to the external vent if you are ducting the fan. Most ceiling mounted exhaust fans are only capable of being ducted a few meters, so it is essential to ensure the duct run to the outside is not overly excessive as this will effect the performance of the exhaust fan. If you are using an inline fan generally they can be ducted longer lengths depending on the motor, these are often a better option of you have an excessive duct run (4m+).
Before putting a hole in the ceiling it is advised to get in the cavity to ensure there are no obstructions present. The last thing you want to do is cut through something like an electrical wire, joist or other ducting etc. Better to check now than damage something important up there!
Once you have selected the location simply cut the required hole (most fans come with a cutout template that you can use). You can then attach ducting if required and your external vent. Secure the system using duct tape.
Remember any electrical work needs to be performed by a qualified electrician.