Our dryer has an airflow sensor and is always warning us that the lint filter needs to be cleaned, even when it has just been cleaned. This started after we moved it to a new house that has the vent about 7-8 ft above the floor. I've improved it by changing to a rigid duct, but it is still an issue. I can't move or enlarge the vent (it comes out a bit above ground level and comes through concrete).
So, I'd like to look at adding a dryer vent booster, which costs $200-$300. What about adding an inline duct booster (which costs about $50, but is not designed to handle the lint) that draws from the room air, goes through a one way valve and then a wye into the dryer vent.
Has anyone tried that? Do you think it would work ok?