993 Heating Smelly

[a993lad]

I'm running my 993 with the aircon on most of the time at the moment. And surprisingly the aircon works pretty well, so I guess I'm one of the lucky ones.

However, when I switch the aircon off, and run the heater it smells horrible. Bit like a damp mouldy old cellar or sweaty socks or something like that if you can imagine it.

I can get rid of the pong by whacking the heater up to full and opening the windows, and then quite quickly it disappears and is fine. Then I can close the windows turn the heater down to a comfortable level and everything is okay. Until next time I switch from aircon to heater.

Any ideas?

[aceparts_com]

most cars do this. Whack a can of the air con deodoriser in it and the problem will mostly go. Also turn the air con off but leave the fan running on the last 5/10 mins of your journey.

[james_j]

aceparts_com said:

... Also turn the air con off but leave the fan running on the last 5/10 mins of your journey.

Yes, this works on mine.

[Pugsey]

Ah so that's what my Defender has in common with a 911. I've got a wiff of old dog too but I think that was an optional extra.

[chris_w]

Same here on my 996. Was talking to my Dad about it at the weekend and he'd read something in the Torygraph Motoring section about it as a common fault (he'd had it in his Audi too) and it's to do with the pollen filter getting damp. As above, the recommendation was a blast with the heater once a week (year round) and certainly helped mine when I tried it.