When hiring a window cleaner, expect thoroughness, professionalism, and attention to detail. They should arrive punctually, and equipped with the necessary tools and solutions. A good window cleaner will inspect your windows beforehand, noting any specific challenges or requirements. During the cleaning process, they should use appropriate techniques to remove dirt, grime, and streaks without damaging the glass or surrounding areas. They should also ensure safety measures are in place, especially for windows in high or difficult-to-reach places. After the job is done, expect clean, streak-free windows and a tidy workspace. Additionally, effective communication and transparency regarding pricing, scheduling, and any additional services are key aspects to anticipate.