Air Conditioning

Does anyone know what the cost of installation of Air Conditioning in 3 bedrooms is likely to be ? No 'clever 'answers please to obtain points. Don't bother to say..free…open the windows…I live on a busy trunk road and that is not possible.
I bought a stand alone A/C unit this summer - was only £200 [...]

Can you counter these comments below for replacing Air conditioners with solar air conditioners
A/C is everywhere."
Wrong! Lots of people have no A/C.
"They attach themselves…"
No, people attach them.
"They heat up the outside."
The heat emitted from A/C units is negligible compared with the presence of the building itself.
"Primitive technology in A/C units causes electric utility companies to [...]

Hi there,
I'm wondering if there are any types of pet carriers or other portable unit (crate, pen, etc) that have either attached air-conditioning, or if something can be attached.
This would not be for constant use. My enclosed-bed pick-up truck is not air-conditioned (maybe a unit can be installed in the back canopy??). For the rare [...]