Hi there,
we have got Air con fitted to our unit. I would highly recommed Cool and secure.
Karen, mike and the lads are great to deal with. As for time keeping you wont have to worry with them, even while they were moveing house they still did mine on the day and at the thim they said they would. As for price all are much the same I have been told. You get what you pay for.
http://www.coolandsecureaircon.com/ or phone them on 678 845 991