#hepa — Public Fediverse posts

I keep reading about Corsi–Rosenthal boxes as DIY air purifiers that outperform all commercially available air purifiers.

You literally only duct-tape four HVAC filters together and slap any regular PC fan onto them.

US-Americans recommend the brand #Filtrete for MERV-rated HVAC filters, but in Europe that brand costs at least twice or thrice as much as in the USA.

Are there any equivalent affordable HVAC filters in Europe with a MERV rating of 8 or 13? Or do I simply have to swallow the additional cost because HVAC filters aren't as ubiquitous in Europe as they are in North America?

#DIY #CorsiRosenthalBox #CorsiRosenthal #HVAC #HEPA #MERV #AirQuality #AirPurifier #AirFilter

@alisynthesis As a long haul strategy, the modular #OddCube #CorsiRosenthal Box should be released later this year - 3d Printable or kit-buyable, uses any brand of 10" furnace filters, runs pc fans for low energy use and easy replacement, has a cool shape (a #cuboctahedron !) - see their #Kickstarter https://beige.party/@beadsland/116889416498442008 #HEPA #DIY #3dPrinting #Wildfires #AirQuality

Hazardous Air Quality - “Everyone should stay indoors and reduce activity levels.”

The DC region has blown past the expected Code Red Air Quality warning for Friday, July 18. It was only red for about an hour before moving to the purple “Very Unhealthy” for everyone range. Now, it’s mostly in the maroon “Hazardous” for everyone range, which is the highest this scale goes up to. This is due to wildfire smoke from Canada. Good thing rain is in the forecast for tomorrow.

If you have an N95 mask, such as the 3M Aura (which fits about 80% of adults), it is a very good idea to wear it. Under these conditions, a half piece respirator is better if you have one and need to go outdoors. Most hardware stores should have them in stock if you don’t have one on hand.

Remember that smoke rises, so stay on the lowest floor while indoors if you can. The PM levels for my upstairs rooms are much higher than my lower ones. You can seal leaky windows with painters tape and plastic sheeting to create a “safe room” with HEPA air purifiers or make a CR Box (I reposted a tutorial yesterday).

https://www.airnow.gov/

#MaskUp #N95 #StaySafe #AirQuality
#PM #HazardousAir #CodeRed #Wildfire
#HEPA #CRBox

Already own a QT3 Portable Air Purifier but need a new HEPA filter? 💨 We’ve got you covered.

QT3 HEPA Filters (2 pack) are on sale for $34.99 until May 23. Order yours today! ⏰

🛍 https://buymask.ca/collections/wildfire-smoke-protection

#QT3filter #HEPA #Ready4Smoke #WildfireSeason #WildfireSmoke

Can houseplants really purify the air in your home? What the science actually says
#Houseplants #IndoorAirQuality #AirPurifier #HealthyHome #Science #HomeCare #Wellness #IndoorPlants #CleanAir #HEPA #NASA #Ventilation #Sustainability #Pollution #Plants
https://the-14.com/can-houseplants-really-purify-the-air-in-your-home-what-the-science-actually-says/

#RSV #influenza #influenzaA #influenzaB #covid19 # #sarscov2 #measles #mpox #hepatitis #HepA #HepB #norovirus

#Wastewater monitoring #infectiousdiseases #US #USA

https://data.wastewaterscan.org/

#RSV #influenza #influenzaA #influenzaB #covid19 # #sarscov2 #measles #mpox #hepatitis #HepA #HepB #norovirus

#Wastewater monitoring #infectiousdiseases #US #USA

https://data.wastewaterscan.org/

Has anyone tried making a PAPR or HEPA stroller? A few people have mentioned the concept but the only source I've found is this one paper: https://www.researchsquare.com/article/rs-2430680/v1

I'd love practical tips. Right now I can't go into stores with my baby because she can't mask, having the ability to wheel her inside would greatly expand what I can do while caring for my child. Also useful during wildfire smoke.

#CovidIsNotOver #COVIDisAirborne #strollers #PAPR #HEPA #AirFiltration #babies #pollution #smoke

#Yale #YaleClimateConnections #airquality #IndoorAir #co2 #ParticulateMatter #CorsiRosenthalBox #HEPA #filter

Jeff Masters 22.Dec.2025, YCC

Improving indoor air quality might save your life

https://yaleclimateconnections.org/2025/12/improving-indoor-air-quality-might-save-your-life/

RE: https://mastodon.social/@paulbeckwith/115771889007772777

#FYI #PaulBeckwith video lecture and literature review
#airquality #IndoorAir #co2 #ParticulateMatter #CorsiRosenthalBox #HEPA #filter

Ventilate!

(Pro tip: Visit Germany, experts of Lüften =D)

"CHEPA is a free, easy-to-use calculator that helps schools and local authorities explore whether adding a HEPA filter unit could improve classroom air quality and what it might mean for energy use. It is independent, evidence-based, and co-designed with schools." https://www.sei.org/tools/chepa/ #AirQuality #Schools #HEPA

You've got COVID & don't know it(!) 49% of cases are completely asymptomatic, or have no respiratory symptoms whatsoever. Only headache or other symptoms.
- #Yale School of Public Health, citing the #CDC and #Lancet Regional #Health.
So #MaskUp b/c #CovidIsNotOver #asymptomatic #infections #carrier #NYC #mask #respirator #face #shield #vaccination #HEPA #filtration #rapid #tests no #symptoms | #LongCOVID #surpassed #asthma as #number #one #chronic #illness in #USA

Outdoor air quality here is still terrible, so I trimmed some berry-laden branches from my sea buckthorn bushes (masked of course) and brought the branches inside to actually pick the berries. Bonus: I could sit down while harvesting indoors, surrounded by air purifiers! Then of course I had to sabotage all of that effort to take care of my health and bake a cake with my berries. #gardening #baking #airquality #HEPA @altbot

Wechsel #Tesla #HEPA- #Luftfilter - verspätet!

https://m.youtube.com/watch?v=_obTYroLyW0

The challenge of HEPA filters in the classrooms.

h/t @ChristinaAuria

source: https://xcancel.com/kadamssl/status/1938267359233429683#m

#covid #school #health #safety #hepa #iaq #AirQuality #IndoorAirQuality

1/ #LuftHygiene #CleanAir #SaubereLuft #CovidIsAirborne #CovidIsntOver #Grippe #C19 #SARSCoV2 #H5N1 #Vogelgrippe #BirdFlu #LuftuebertrageneViren #Trotec #Airgoclean #200E #HEPA #HEPA13 #HEPA13Filter Der Trotec Airgoclean 200E #Luftreiniger muss wieder gewartet werden, die Anzeige leuchtet rot.

Some dirty lowdown nogoodniks. These characters appear in stories published by Sifillindustries.

#Sifillis #sifilis #books #book #BooksWorthReading #illustration #illustrationart

More stuff at sifillis.com!

#gono #hepa #lookout #beware #creeps #villain #villains #bookstodon #BookStadon

I facilitated an online workshop for @freetechproject tonight and it's the first time we tackled technology to fight #Covid (Co2 monitors, air purifiers, #HEPA, #CorsiRosenthal boxes, #NukitTempest, etc) as well as why this is important (what Covid is, how it spreads, etc) and the small (predominantly older) group was very open to the ideas, sincerely inquisitive about the topic, interested in reducing risk, aware of inclusion issues, and sensitive to my own experiences as carer for a partner disabled by Covid. I'm also realising that people genuinely refer to "Covid" in the past tense sometimes because they wrongly associate it with government policy, while at the same time they very clearly understand that #CovidIsNotOver. My point is, keep tackling the topic, and keep giving folks the benefit of the doubt -- humans are of course good at heart and state policies, and obviously the establishment media, may very well indeed not, in fact, reflect people's actual concerns about Covid.

Reducing Your Microplastic Exposure: D rinking filtered tap water rather than bottled water can reduce your microplastic intake by as much as 90%. #microplastics #bottles #containers #hepa
https://www.instagram.com/drhowardsmithreports/reel/DHDwCTEPLKc/

No sé si sabíais que he experimentado un retroceso importante de la alergia. No sabía qué era.

Ahora ya lo sé (movidas ambientales) y voy a tener que comprar un aparato con #filtro #HEPA en casa, al margen del deshumificador.

¿Me recomendáis aparatos no muy grandes, majos y no muy caros? Gracias.