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A comment on DIY ventilation heat exchanger (2010). Parent comment

Re:DIY ventilation heat exchanger (2010) by andbberger on Saturday December 23, 2023 @09:36AM (#38744489)
you can hookup the panasonic unit to a window manifold for a portable AC and put some insulation board over that. that is the only reasonable solution I have found for the states
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Re:DIY ventilation heat exchanger (2010) by aifooh7Keew6xoo on Saturday December 23, 2023 @02:55PM (#38747542)
I've had good success adding various utility and ventilation feed throughs in rentals with sliding glass door inserts, including large ducts for various HVAC experiments.

I start with a board and cut/slot it so it fits neatly into the top and bottom tracks, then I move the latch receiver to the board, zip a few screws through the board where the holes won't be noticed.

The glass door opening becomes a bit narrower, and I can cut as many holes as I want in that little bit of wall.

If it's painted white it usually ends up looking better than most of the corporate maintenance work on the building.

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