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Reply to "Beck - Subaru Spyder under dash Heater Core ?"

Do your defroster vents run all the time the heater is running/blowing?
Or is the defroster only ran with the Top Up?

No. I made a spring-loaded flap that can either give heat or heat AND defrost. Sometimes when the dewpoint makes it necessary, it's good to have defrost even top-down.

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