How to Defog Your Windscreen Fast
A fogged windscreen is dangerous — here’s how to clear it quickly. A Cranbourne West specialist explains.
The fastest method
Turn on the air-con (it dries the air — yes, even in winter), set the temperature warm, direct airflow to the windscreen (demist setting), and use fresh air, not recirculate. The combination of warm, dry, moving air clears fog fastest. Cracking a window briefly helps too.
Recirculate keeps the moist cabin air inside, which makes fogging worse — switch it off to demist.
If it keeps fogging
Constant fogging means too much moisture in the car — from a leak, a blocked air-con drain, a tired cabin filter, or a heater-core leak (a sweet smell). Clearing it is a band-aid; finding the moisture source is the fix.
We’ll trace the cause — leak, drain, filter or heater core — so it stops fogging for good.
We’ll take care of it
Prefer to leave it to a specialist? We look after all of this as part of a service or a quick check — with honest advice on what your car actually needs, not what sells.
Book online in 60 seconds or call a Cranbourne West specialist on 03 8782 0711.
How to Defog Your Windscreen Fast — FAQ
Air-con on (it dries the air), warm temp, airflow to the windscreen, and fresh air — not recirculate.
Yes — it dries the air and clears fog faster, even when it’s cold.
Too much cabin moisture — a leak, blocked drain, tired filter or heater-core leak. See our foggy-windows guide.
Yes — we trace and fix the moisture source.
Related guides & services
Want it done properly?
Trusted Cranbourne West car specialists — RACV-accredited, fixed written pricing. Book online or call 03 8782 0711.