condenser dryers…are there two types
There are two types; ‘conventional’ dryers with a condenser added on, ie they heat the air with electric elements so that it will absorb more moisture, and then cool it afterwards to get the moisture out (instead of venting it outside), and heat pump dryers that use a similar technology to a fridge in reverse to use the heat from the condensing part of the cycle to warm the air. Heat pump dryers run cooler (so less chance of damaging synthetics), take longer and use less electricity, but are more expensive to buy and potentially to fix (as they’re more complex). They also work best in a ‘room temperature’ environment, ie, not in a conservatory or garage in winter. As in my post above, we have a heat pump dryer and compared to the vented one we had before, I think it’s saved a lot of electricity.
My guess is that the problems people have with damp air being put out are either from non-heat pump models, or (possibly) heat pump models being used in a colder environment.