A TTW unit is a self-contained air conditioner designed to be permanently installed through an exterior wall, often inside a dedicated wall sleeve. Unlike window units, TTW systems do not block your view or compromise home security, and they provide a much tighter seal against the weather. We offer a variety of high-performance models in our ttw collection for both residential and light commercial use. These are excellent for apartments or home additions where wall mount mini-splits might not be permitted by an HOA. Many of these units also include built-in heating, effectively turning them into a compact heat pump systems solution. They are the go-to choice for localized, reliable climate control without the need for complex refrigerant piping.