Gradient's advanced window unit can heat and cool 500 square feet, all without needing any fancy electrical work. I saw it at ...

and cheap window AC units are flying out of the local big-box stores. Not all of these discount units undergo rigorous QC before sailing across the Pacific, though, and a few wonky thermostats ...

Although air conditioning units are generally subdivided into a number of categories, including window, split and whole house/building units, they still work the same, with the compressor ...