Not unlike the swallows returning to Capistrano, the in-window air conditioner returning to my office window heralds the start of summer around these here parts. The room of the house my office is in is both the warmest room in the summer and the coldest in the winter, thanks to poor air circulation and its position in the house (facing northwest, which means it gets a lot of sun in the summer and bears the brunt of arctic wind blasts in the winter), and so in both seasons requires additional cooling and heating. The first day of summer seems like a fine time to drop it in. If last year is any indication, it’ll stay in until October (at which time it will not have been run for a month and will look increasingly silly in the window sill). Welcome, in-window air conditioner! Your cooling presence is appreciated.