Samsung has both heat pump (the one talked about above) and vented (similar to normal dryers) versions. LG doesn’t have a vented version yet. Condensers are slower than heat pumps, if you don’t have a vent and/or a 240V outlet, heat pump is the way to go. I personally chose a vented one because it was replacing existing machines. In NYC, heat pumps are more popular since a lot of apartments don’t come with vents or 240V (and definitely in the UK where they put the washer/dryer in the kitchen, you also see these all over Japan, all heat pump versions).