js.b1 wrote:
The split DIY systems are easy fit.

Just remember they are precharged for a specific length limit, and on
many systems you can not shorten the hose - you therefore have to coil
it behind the unit either inside or outside. Might be useful to
investigate if various lengths are available.

For domestic, I've never understood why they don't do an "all outside"
system. Where there is just a vent in the wall with an IR window for
the controller - you simply have it blowing cold air in or hot air in
depending on heat pump mode. No hoses to muck about with re kinking,
no seals to go bad, no installation hassle or finding free wall space
and so on. Instead they do "everything inside, just two vents outside"
at a huge increase in price, often reduced CoP and whacking great big
box inside.

Like one of these?
http://www.roomairconditioners.us/wi...tioner-530.jpg

I guess because they are huge and only fit in a window!

I have seen the other type, where the whole unit is inside and there are
two vents to the outside, but these are not common, mainly used where
access to the outside is not possible/practical

The units mentioned by the OP are proper split units, where the
compressor and condenser coils are outside in a box, and you just have a
fan and the evaporator inside.
like this
http://www.global-b2b-network.com/di...onditioner.jpg

Toby...