Hope I'm in the right place...
Summer is here, which is bad news for me due to excessive allergies. I literally cannot sleep with a window open or even use a window AC, as even with the vent closed, it'll still manage to draw in a little outside air....the pollens give me nocturnal asthma and I have so much trouble breathing I can't even fall asleep. I lived in a home with central AC last summer, but this is no longer the case.
Basically, I need a portable AC unit to cool a 13x20 bedroom that will vent hot air either under a doorjamb or - I'm wondering if this is even possible - down a heating vent. I see a ton of models on eBay and locally and have no idea what to look for. I don't mind emptying a water reservoir, but I simply cannot have the windows open, period. If I can solve this problem for around $500, all the better. Any advice is MUCH appreciated. Thank you.