Izindawo zokuthengisa i-AC, ezaziwayo njengokuthi "ukuchaja okuncane", ziyindlela zokuchaja ezithengiswa ezikhishwe ngaphandle kwekhompyutha yamashayina amanzi kanye nezikhombisi zokuchaja zomshayina wekhompyutha yamashayina amanzi. Lolu hlelo luyatholakala kumanye amathiphu amaningi amashayina amanzi amasha, amashayina amasha, amashayina amasha amancane kakhulu, noma yilapho kufakwe khona njengemithombo yezindlu, izindawo zokuthenga, kanye nezindawo zokwenza isicelo somshayina.