Steam-assisted cleaning is the headline feature and is repeatedly credited with helping loosen tough or sticky stains via a pre-treat mode and a steam-wash mode. Reviews agree it adds cleaning bite, though at least one comparison suggests cheaper cleaners can reach similar results with more passes.
Steam functionality is mentioned only in the context of other Bissell models or an outlier Big Green review; most Big Green Professional reviews focus on hot-water extraction rather than steam cleaning.
Multiple reviews explicitly state there is no steam-clean feature. Hot-water brush washing helps maintenance but does not replace steam for floor sanitizing.
Several comparisons emphasize this is not a steam cleaner; Bissell’s HydroSteam models add steam for tougher, older stains, but the ProHeat 2X Revolution relies on hot-water extraction instead.
Reviews note there's no steam/heated cleaning option, which can make it slower on the toughest dried-on stains compared with steam-capable alternatives.