What is the difference between Extract and Exhaust fans?

Question

What is the difference between Extract and Exhaust fans?

Answer 1

extract fans pull the air, exhaust fans push the air

Answer 2

Extract fans are on the outside of the building, on the end of the ducting. Exhaust fans are located in the ducting often close to the point of fume generation

Answer 3

Extract pulls inward,exhaust pushes outward.

Answer 4

For all practical purposes, there is no difference. In the HVACR industry exhaust fans can be push or pull in regard to the ductwork, but more generally they are preferably at the end away from the space or chamber being exhausted.

An extraction fan may be a special purpose fan dedicated to a particular process..

Answer 5

Extractor and Exhaust fans are two names given to the same piece of equipment doing the job of removing gases or exchanging air.