How many people are required to install the All-Weather 120V heat pump? December 03, 2024 16:14 Updated At least two people are required to safely lift, move, and install the All-Weather 120V heat pump. Related articles Can I install a Gradient All-Weather 120V Heat Pump through a wall? What is the weight of the All-Weather 120V heat pump? What comes in the install kit bag? How do you insulate with the All-Weather 120V heat pump in the window? What about the top of the window that is moveable/slideable? How do I install my Gradient All-Weather 120V Window Heat Pump?