The best replacement for electric fan is clutch fan.

The best alternatives to electric fan are rated as following:
★★★★★  clutch fan
★★★★  mechanical fan
★★  belt driven fan
★★  flex fan
★★  mechanical
★★  aircon
★  fan clutch
★  stock fan
  viscous
  belt driven f150 fan
  viscous clutch
  air cooler
  air condition
  clutch
  pulley fan

Your alternative for electric fan is not listed? Suggest!
Speaking about electric fan, one probably shouldn't forget about shroud.

Other search terms related to electric fan and their ratings are:
★★★★★ shroud
You have in mind a companion for electric fan and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of electric fan in all years. Click on graph for more.
electric fan
clutch fan
mechanical fan