Meaco do it at 10c and 20c, and 50, 60, 80% humidity. So I think the decent brands do, cheaper ones try to make it there as good for half the price.I saw what appeared to be a good deal on a Daewoo 12l dehumidifier, but the manual only states the max extraction rate at 30c 80% RH. I think manufacturers should list the performance at a realistic indoor temperature or performance at half 6l extraction, and so on, so the consumer can buy with efficiency in mind. All the extraction rates on dehumidifiers I have looked at have declined in performance more rapidly then the Meaco Arete.