Cabin Temp Tip

I have been trying to get around to that myself, although I did insulate all the exposed tubes when I replaced the core to help a little.

It helps if the air doors seal well but it'd still be nice to shut the coolant/hottant to it off all the way.
I was hoping to avoid a hot metal valve handle, so I was thinking to use a ball valve with the insulated handle.
Yours is compact though, and thats something to consider also.

It's on the list. :-)