I have seen a lot of great DIY carpenter bee traps that fill up with bees. I have friends that say the traps keep them out of the house.
https://www.pinterest.com/explore/carpenter-bee-trap/
There are severl things to consider first: 1) Was the proper double-paned, Low-E windows made for such a location installed? 2) Is the room properly insulated? 3) Does the existing HVAC unit have the ... read more