combo units mean more in repairs, you would never spend 400 dollars to fix the dryer you have now, but if your dryer in a combo needs 400 dollars you have to pay for the repair or throw away the washer too
the LG ventless tend to plug up alot, so after the 2+ hours you would normally wait to dry one load, you come to find all the clothes still wet, and as reg pointed out, in that 2 or so hours you havn't even washed one more sheet that you could hang to dry