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1 - Hair dryer - The different functions
Atelier Soudé and one other contributor
Last updated on Sep 2, 2026
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Community-Contributed Guide
An awesome member of our community made this guide. It was not created by iFixit staff.
Introduction
Go to step 1 ↓The study that follows concerns a large number of the hair dryers on the market. There are variations, but the operating principle remains more or less the same.
It is a simple object, so there is no particular difficulty in understanding how it works.
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The hair dryer, also known as a blow dryer in some regions, is an electromechanical device designed to dry hair using hot or cold air.
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A hair dryer primarily consists of a motor that powers a blower mechanism and an electrical resistance, so that air drawn in on one side exits the other at a higher temperature. Read more on Wikipedia
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The airflow produced as well as the temperature of this airflow can be modified using a multi-position switch or via a potentiometer (more rare).
Ask FixBot
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Hair dryers consist of a body Reference 2 provided with a handle that receives the power cable Reference 4 and is equipped with a multi-position switch Reference 5
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The back of the device is provided with a grille Reference 3 protecting a dust filter. The front is fitted with a diffuser Reference 1 which can be removable.
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We now know what a hair dryer is and what its different functions are. We can move on to studying how it works in the following tutorial: “a hair dryer, how does it work?”
