This Friedrich 6000 Btu AC is extremely quiet (hardly know it is running). It has an impressive solid build and works effectively to cool a small space quickly. The unit is extremely easy to install (typically less than one hour). The assembly and instructions are easy to understand and clear. No surprises! All you need is a screwdriver, no wrenches required. Also, no need to buy any additional $40 outside window sill support. It is provided. The swing setting cools a room evenly throughout your space.