Did you know? Ceiling height affects the efficiency of a ceiling fan. Installing a ceiling fan at the proper height allows for better air circulation and saves energy. Suitable ceiling fan heights: 2.5-2.7 m ceiling height: Standard installation. 3 m ceiling height: 30 cm extension rod. 3.5 m ceiling height: 60 cm extension rod. 4 m and above ceiling height: 100 cm extension rod. The standard height of 2.43 m is the best for ceiling fan air distribution! Proper installation = a cool, comfortable home with strong winds all day long.