An autoclave and a method for sterilizing are disclosed, where the autoclave comprise at least a steam generator (5), a sterilizing chamber (13), a vacuum pump (20) to discharge said chamber (13), and a pipe (35) connecting said chamber (13) to the steam generator (5) through which a condensate may be discharged into the steam generator, wherein a condensation collector (11), representing a "cold point" with respect to the chamber (13), may be connected to said chamber (13) to suck out and collect condensate and to said steam generator (5) to discharge condensate therein.
