Inline, Ceiling or Wall Bathroom Fan?

Possom

I would like to get a fan installed in a small 1st floor bathroom of my house. This would be a first time installation for the bathroom, and I'd get a professional in to install it. The bathroom is small at about 2.4 sqm.

I don't want the the fan to be switched on just because the bathroom lights are switched on.

It would appear that I could have either an inline exhaust, ceiling mounted exhaust or a wall mounted bathroom fan installed.

With this being the case, which of these three types would you suggest?

Owain_Moneysaver

Through the wall is probably cheapest to buy, but you will have to pay to have the wall core drilled for the duct.

Inline fan may be the most efficient and, if they can go out through the soffit, may be cheaper to install, offsetting the higher cost of the fan and ducting.

Inline fans are also useful in small bathrooms because they're above the ceiling so you don't have to worry about which zone the fan is in for Wiring Regulations.

If you want the fan for steam clearance you can get it connected to a humidistat.

TheCyclingProgrammer

Inline, less noisy and easier to install.

Grenage

In-line whenever possible.

Possom

I should also ask, if I purchase an in-line fan what sort of person should I get to install it?

Would an electrician install it, or only connect up the wiring - meaning someone else would install it?

If an electrician, do I have to get some form of documentation from them to confirm that it's properly connected to the mains?

TheCyclingProgrammer

You will at the very least need an electrician to wire it up correctly and you will get a minor works certificate, nothing else is needed.

When I bought my fan, I installed it in the loft myself, got a handyman to go up a ladder with a hole saw and fit the outside vent and got him to drill a hole in the ceiling for the inside vent. I connected up the ducting and got an electrician in to wire it up.