No heat!

[Lee M. Levitt]

A quick question...I just noticed that I'm not getting any heat from my S6.
Engine's warm, temp reads fine, climate control seems to work properly, cold
air blows out of vents.

Based on a quick perusal of the archives it seems there's an inline valve by
the firewall that controls warm water flow to the heater box. Would this be
the likely culprit?

Anyone know what this little gizmo costs?

Thanks,

Lee
'95.5 S6 avant
'96 A6 quattro avant