Anyone installed a fixed, split air conditioner?

[Toby]

With the summer months, and the prospect of a heatwave, approaching, I'm considering installing a permanent split air conditioning unit in the office upstairs.

The issue we have is that we both tend to spend a lot of time in the evening in the "office" (second bedroom). Hot weather, combined with the heat of two people and two computers can make it very uncomfortable in here. It sometimes gets this way even when the weather isn't hot but there's little wind to move air through the house. The GF also suffers badly from hay fever whis is exacerbated by having the windows wide open.

We've got a small portable aircon unit but it just doesn't have the power to deal with the heat in here so I'm considering getting a "proper" split type one installed. I see you can pick them up for a few hundred on the bay but has anyone here ever installed one themselves as I'm wondering what's involved and whether it's a viable DIY job or I should pay someone to install it.

If anyone's done this, either themselves or via a professional installer, can they relay any experiences?

Cheers