However, it looks like they're about 3x the cost of a vented dryer.
And smaller capacity than vented ones.
> Ventless dryers also take longer to get your clothes dry. A vented dryer might finish a Normal load in about 45-50 minutes, but a condenser or heat pump dryer could run for an hour and a half. Want to dry a bulky blanket or comforter? You could be waiting more than three hours.
http://laundry.reviewed.com/features/everything-you-need-to-...