How often you need professional window cleaning can vary depending on factors such as location, weather conditions, and personal preference. Generally, it is recommended to have windows professionally cleaned at least twice a year. This ensures that your windows remain clean, clear, and free from dirt, dust, and grime buildup. However, if your windows face particularly harsh conditions, like those in storefronts, near cars, sprinklers, trees, or other areas where contaminants are abundant, we advise more frequent cleanings, such as quarterly or monthly. Ultimately, the ideal frequency may vary based on individual circumstances and preferences. Consulting with a professional window cleaning service like ours can provide personalized guidance for maintaining sparkling windows.