ASM Air Conditioning provide air conditioning services in Berkshire, Buckinghamshire, Surrey, Hertfordshire and Middlesex: Air conditioning installers Berkshire: Slough, Maidenhead. Air con servicing Middlesex: Uxbridge, Harrow, Ruislip, Hounslow, Southall. Air con repairs Buckinghamshire: High Wycombe, Amersham, Chesham, Gerrards Cross, Beaconsfield.