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Old 01-04-21, 05:03 AM
peter dowdle peter dowdle is online now
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Join Date: Jul 2008
Location: woodhouse australia
Posts: 246
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The million $ question what is demist verse defrost. Demist sends air to the screen while retaining air flow to the cockpit . While defrost sends hot air to the screen only.

There is a wonderful article floating about on the workings of the heater box which needs to be placed on this forum for future reference.

This advice is from memory as I have replaced my heater with a "VINTAGE AIR" heater and cooler system which utilizes all the original piping so I hope I have it right.
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