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salmon_vandal t1_ivv34bg wrote

15 years in hvac sheet metal here. If you are opening up the wall to drill through two studs, you should also be able to drill a fresh hole in the floor where you actually want your duct. This is by far the better option, but of course you would also need access to below where the duct stubs through. It’s not a great idea to add extra bends, length, or transitions to dryer vent, as you are typically relying on the dryer’s internal blower to void all that air and they are not designed to overcome excess static pressure. If you do run the vent in the wall, avoid transitioning to square as that will not be nice for airflow and that square part will fill up with lint faster and be harder to clean properly. Also, connect the duct pipe with foil tape, no screws, as the screws act as little hooks to catch lint, which will also cause faster clogging and difficulty in cleaning.

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the_other_sam OP t1_ivv5l6u wrote

New hole in floor saves me one 90 bend. My pipe runs a long way so that is significant. Very good advice, well taken. Thanks.

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AffectionateSoft9999 t1_ivveqzh wrote

bonus if the floor is in an unfinished basement and can let the hosing hang from the floor joists.

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salmon_vandal t1_ivvjo7p wrote

One 90 is not insignificant, but probably not the end of the world. If your run is especially long, consider adding a small booster fan somewhere. Some other commenter’s solution of backframing to accommodate the duct would work too, but sounds like it might be more work…

Either way, good luck to you sir!

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Michael_J_Faraday t1_ivxcz80 wrote

There are also dryers that advertise as "good for long vents" that have fans more suited to longer complex runs. I have a GE model and they are superior.

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