Serving Nassau county and Suffolk county Long Island, Long Island Window Washing and Power Washing is a divison of S.A.C. Services and has been given folks time off on weekends since 1985, by making sure their home exteriors are clean and well maintained. Our long list of satisfied window cleaning and power washing customers in Nassau county and Suffolk county Long Island can attest to our quality work and the professional window cleaning service they’ve come to rely on for decades. We use professional cleaning products that will not harm the environment and equipment that won’t damage your home and we never leave a job unless you are 100% satisfied with the results.