The AET is uglier and cheaper and uses a tank. The Velux is spiffier with the pipes hidden, looks more like a skylight. It is pressurized and therefore does not require a tank. I worry about a more complex system (Velux) and its durability. More thinks to go wrong, potentially. Have there been any comparisons? Any experience on the forum to share? I searched the forum but found nothing significant in the archives.

Thanks! The contractor said we had to get this settled in the next few days. Yikes!!