Comment: I need an experienced installer to install a small 5000 BTU window air conditioner in an apartment bedroom window on the second floor of a 4 story building. We have the mounting bracket that came with the unit, but requires drilling into the masonry on the outside. Contractor must be able to install with a different type of bracket, with minimal drilling into the sill. Also must instulate the unit properly with slope for drainage and insulation around unit and window.