Here are two nice Kenmore window air conditioners. Both are clean and work well. These are designed for double hung windows.
larger one can deliver 8100 Btu/hr and features a digital
temperature display, air purifier and remote – $55
The smaller one can deliver 5250 Btu/hr – $35
Both are available separately or as a pair for $75 total.
We live near NE 41st and Fremont.