How To Steam Clean Windows 

You can also use a Ironing to clean your window. Simply use the steam to fog up the window and then wipe it off with a clean towel. Easy.

What brand (steam cleaner) is that in the video?

No! use vinegar and water, then rinse with plain water after. do not get it inside a filled tank though

Ok, but glass will never look as clean or shine as good doing it that way instead of using a mop and squeegee.

Dont do this, you'll crack your cold glass

What a load of tosh. There is only steam within millimeters of the tip of the lance, then it reverts back to water vapour, The instant those micro droplets touch the window they are cooled dramatically. You are advocating using mildly warm water without cleaners to do the job.

Shyface is that it