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scosmantoday at 6:12 PM3 repliesview on HN

I had the same insight for in-home air movement. Purpose built inter-room fans from broan/etc are 3x louder and several times more expensive than computer fans at the same CFM. I've been very happy with them.

https://scosman.net/blog/using_in_wall_computer_fans_for_hom...


Replies

lozengetoday at 6:25 PM

There are continuous extraction fans, they're called dMEV systems. Eg https://www.epicair.co.uk/products/vent-axia-lo-carbon-reviv...

There's also systems which can move air both ways through the whole house - https://www.ventilation-alnor.co.uk/index/support/alnor-know...

Your DIY solution looks a lot cheaper though.

ortusduxtoday at 6:53 PM

Vevor makes drop-in floor/wall register fans in the $35-40 price range. The 'proper' solution is inline booster fans in each leg of the ducts, but retrofitting can be expensive depending on access.

tguvottoday at 7:48 PM

if you have house (with attic), jump ducts are nicer solution