These are the recommendations I received for window washing services: Expert Windows for ten or twelve years and have been very happy with them. They clean my gutters, too. They're at (412) 781-9173. a group named Liberatore Michael Garland ( 814-425-8162) to wash our windows and on occasion to clean out gutters for at least 10 years. He is not a local fellow but from Cochranton, PA. He is very reasonable and reliable. I used Expert Windows and was pleased with his work Jean Thomas