Crossword Genius

A cause of hot gusts blowing through Barnet? (9)

Ross

I believe the answer is:

hairdryer

I'm a little stuck... Click here to teach me more about this clue!

'hot gusts blowing through barnet?' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'a cause' is the wordplay.
I cannot quite see how this works, but
'a' is present in the answer.
'cause' could be 'dry' (dry is a kind of cause) and 'dry' is located in the answer.
The remaining letters 'hirer' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

'of' acts as a link.

Can you help me to learn more?

(Another definition for hairdryer that I've seen is " Salon equipment".)

I've seen this clue in The Sunday Times and The Times.
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