Here's why:

* Living things are made of cells: Electric fans are made of metal, plastic, and other materials, not cells.

* Living things grow and develop: Electric fans don't grow or change on their own.

* Living things reproduce: Electric fans cannot reproduce.

* Living things need energy to function: While electric fans need electricity to work, they don't use this energy in the same way that living organisms do.

* Living things respond to their environment: Electric fans can respond to changes in temperature (like turning on when it's hot), but this is due to their programmed design, not an internal biological process.

Electric fans are machines, designed and built by humans, and they lack the defining characteristics of life.