What are modes? January 27, 2025 16:35 Updated The All-Weather 120V heat pump has five modes: Heat, Cool, Heat & Cool, Dry, Fan Only Related articles What are fan speeds? What do the numbers on the On-Unit UI mean? How do I control the All-Weather 120V heat pump? In Heat & Cool Mode: How do I change JUST the heating temperature, or JUST the cooling temperature (not both temperatures together)? How do I change the set temperature?