The ValidAir system on our Bus is very nice, both in motion and while parked. In fact, it is now something we look for when looking at potential future coaches. However, coming from a '14 Phaeton that didn't have it, I don't think I would spend the small fortune to retro fit it.
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Dewey & Sharon
Southern Maryland suburbs of DC
2022 Tiffin Allegro Bus 40IP
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