I have a condenser dryer in an oblong (130cm x 250cm) utility room. It is against the longer interior wall. The short external wall has two 20 x 20 cm passive vents, one at ceiling level, the other at ankle level, which make the room relatively cold as they are always open. When the dryer is running, and door closed, then the room steams up, so I'm thinking of replacing the 2 passive vents with an extraction fan.
Alternatively (or in addition) I could get a vented dryer - but the closest I could get it to the external wall is about 120cm (there is a toilet against the external wall, so the prime position is taken). Not sure if 120cm is close enough, and a new vent would be needed (the existing vents aren't well placed for it).
Before I get a contractor around for a chat about what is possible, I'm interested to hear other people's experience of vented dryers or tips for managing condenser-dryer humidity with an extractor fan.