Viewing profile — bizzz

I wrote this back in March 2025, but the question feels even more relevant in the current zeitgeist.

Hi HN, I've struggled with apartment noise for years, so I attempted to engineer a mechanical solution: a decoupled, mass-loaded sleep capsule. I went down a deep rabbit hole invol…

Thanks! Yep, the goal is stable 500-600 ppm; now thinking about making it into a positive pressure setup ( https://news.ycombinator.com/item?id=44374107 ).

Thank you, I did not consider it, but looks like positive pressure is a best practice and I'll be looking into that (mounting fans directly onto the trickle vent).

Achim, AirGradient was the key that unlocked this whole project for me, so thank you for creating it. Also, I see that you're still so active in the forums helping users (including…

Thank you both! I'll start with a small research into available HEPA filter sizes, pressure drops they entail, and noise vs power ratio of available fans. Then I'll see if any comb…

Thanks for the detailed thoughts! You've given me a lot to chew on for the next version of this project. I did briefly look at ERVs, but for a single room in an apartment building …

Heh, never really thought there's a market for it. Though now I can imagine it being sold at some TV shopping channel. A solution to a problem you never knew you had. Anyway, I thi…

Yeah, if you can do it, I'm all for it!

Good point for standalone houses! I live in an apartment, so everything you listed is backed by some concrete blocks. So, realistically speaking, the air in any meaningful amounts …

Hi HN, This is my attempt to fix groggy mornings by lowering my bedroom CO2 from 1700 ppm to ~900 ppm. I designed a simple, 3D-printed fan duct that directs air under the door to i…

Ok, someone please glue all the tiles together! I can't wait to see all this magnificence!