What's moisture release?
Warm air into your room
Every dryer experiences moisture release. Whether a dryer releases a lot or little moisture has to do with the seal around the drum door. The stronger the seal, the less hot air your dryer loses. With a low moisture release, you won't be bothered by foggy windows or mold on your walls. As much moisture as possible will end up in the right place: in your condenser reservoir or through the hose. This is also known as a high condensation efficiency. Make sure to remember: high condensation efficiency, low moisture release.
Very low moisture release
Do you put your dryer in a small laundry room or a room without windows? Choose a model with very low moisture release. It'll have a moisture release of 5% or less, or a condensation efficiency of 95% or more. For example, Miele dryers have a seal of Kevlar fibers around the drum door. As a result, as little moisture as possible will escape. You won't be bothered by foggy windows or mold on your walls.
Low moisture release
A dryer with low moisture release loses 5.1 to 10% of its moisture. This is the percentage of hot air that the dryer blows into your laundry room. The other part ends up in your condenser reservoir or rinses away via the condensation drain hose. This is a condensation efficiency of 90 to 94.9%. For a dryer that you put in a small laundry room, choose a dryer with a low or very low moisture release.
Average moisture release
If you put your dryer in a large room with windows that open, you'll have less trouble with hot air. In that case, it doesn't matter that your dryer has an average moisture release. The dryer will lose 10.1% moisture or more. The condensation efficiency is 89.9% or less this way. By opening the windows during or after drying, you won't have a stale room. You can also switch on the bathroom fan.