Translation guide
The English verb 'install' covers several distinct actions in Japanese. The most common equivalents are 設置する (set up equipment/facilities) and インストールする (install software/apps). Other meanings like 'install a person in a position' or 'install oneself comfortably' require different expressions.
To set up or put in place a device, machine, or system for use (e.g., air conditioner, security camera, kitchen).
The most common and neutral term for installing equipment, devices, or facilities. Used in both formal and everyday contexts.
Install an air conditioner.
We installed security cameras.
Emphasizes attaching or mounting something onto a surface or structure. Common for shelves, hooks, car parts, etc.
Install a shelf on the wall.
I had a car navigation system installed.
Used for installing large, heavy, or permanent fixtures like bathtubs, machinery, or industrial equipment. Implies a fixed, stable placement.
Install a new bathtub.
To download and set up a program or application on a computer or device.
The standard loanword for installing software. Universally understood.
Install a new app.
I installed the software on my computer.
A more formal term often used in business or IT contexts when introducing a new system or software across an organization.
Install a new accounting system.
To formally place someone in an official role, often with a ceremony.
To settle into a place in a relaxed or comfortable way.
インストールする is only for software. Using it for physical installation (like an air conditioner) sounds unnatural. Use 設置する or 取り付ける instead.
install an air conditioner (unnatural)
彼はようやく新しい家に落ち着いた。
He finally installed himself in his new home.