Gurgling sound from dashboard- Mondeo ST220

[cortinamarque3]

Hi all

Occasionally I get a gurgling sound from behind the centre of the dashboard- almost like water bubbling through something- normally happens when been running for a little while- something to do with the air con? Can only hear when stationary and it tends to go away after a while

Any ideas?

Thanks so much Matt

[cortinamarque3]

Ah yes that could be it- serious or just annoying? A new one looks pricey and must be difficult to fit