How often should I clean the condensate filter? January 27, 2025 17:03 Updated Clean the condensate filter quarterly to prevent buildup and ensure efficient operation. Related articles Can I use tap water to clean the condensate filter? How do I clean the All-Weather 120V heat pumps condensate filter? Is the condensate filter replaceable? What should I do if I see ice forming on the outdoor half of the heat pump? What should I do if the condensate filter is damaged?