Normally air con units are fitted by the people you buy from, including Migros, and its all included in the price. We used the arcelik website. They have shops in Fethiye and the web site in Turkish and English. Paid £140 and £180 for 900 and 1200 btu units last year. (This arrangement also applies to all the white goods, installation is in the price paid. Wish that was the case in the UK!!)
Carol (ps. sorry to "but in"!)