Recently purchased a 14100E. Owned an older model that gave out after 10 years of use. I'm disappointed the unit did not come with the window kit. Why wouldn't it be included? I suspect it was either unintentionally omitted OR NewAir is trying to make $$ on a needed accessory and doesn't care that it inconveniences the customer. I've tried to contact NewAir without success. The phone just rings away. I'll call a few more times before I return the unit and write off NewAir.