#hepa — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #hepa, aggregated by home.social.
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Are HEPA cabin air filters unsafe for some vehicles?
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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
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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
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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
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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
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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
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@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
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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).
#MaskUp #N95 #StaySafe #AirQuality
#PM #HazardousAir #CodeRed #Wildfire
#HEPA #CRBox -
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.
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Why isn't our government mandating (& providing funding for) improved ventilation in public buildings? Study showed with 2.4 changes of the air per hour, cases dropped by 40%. With 4 changes of air every hour, infections dropped by 66.7%; when replacing the air 6 times each hour, infections go down by 82.5%! We need this in theatres, restaurants, schools...
#air #filtration #saves #lives #infections #reduced #replace #clean #filter #protect #students #COVID #HEPA #USA https://www.reuters.com/world/europe/italian-study-shows-ventilation-can-cut-school-covid-cases-by-82-2022-03-22/ -
[Перевод] На что способен самодельный очиститель воздуха, который можно собрать за 30 секунд?
Плохой воздух однозначно вреден , но на рынке его очистителей мы наблюдаем бардак. Каждый производитель использует свои эксклюзивные фильтры, по всей видимости, для того, чтобы клиенты были вынуждены покупать именно их. А откуда нам знать, что эти устройства вообще работают? Немногие компании публикуют лабораторные тесты. И почему какая-то большая пластиковая коробка с вентилятором и фильтром стоит аж $100-300? Но существуют и самодельные очистители, чаще представляющие собой просто примотанный к вентилятору фильтр. Мне такая идея по душе, но в этом случае тоже нет уверенности в их эффективности. Какие-то эксперименты проводились, но недостаточно, чтобы внушить мне доверие. Поэтому я решил поэкспериментировать сам: собрал очиститель, напустил дыма и измерил, насколько эффективно он справляется с очисткой мелких частиц.
https://habr.com/ru/companies/ruvds/articles/791986/
#ruvds_перевод #очистка_воздуха #фильтры #hepa #merv #экология #diy
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[Перевод] На что способен самодельный очиститель воздуха, который можно собрать за 30 секунд?
Плохой воздух однозначно вреден , но на рынке его очистителей мы наблюдаем бардак. Каждый производитель использует свои эксклюзивные фильтры, по всей видимости, для того, чтобы клиенты были вынуждены покупать именно их. А откуда нам знать, что эти устройства вообще работают? Немногие компании публикуют лабораторные тесты. И почему какая-то большая пластиковая коробка с вентилятором и фильтром стоит аж $100-300? Но существуют и самодельные очистители, чаще представляющие собой просто примотанный к вентилятору фильтр. Мне такая идея по душе, но в этом случае тоже нет уверенности в их эффективности. Какие-то эксперименты проводились, но недостаточно, чтобы внушить мне доверие. Поэтому я решил поэкспериментировать сам: собрал очиститель, напустил дыма и измерил, насколько эффективно он справляется с очисткой мелких частиц.
https://habr.com/ru/companies/ruvds/articles/791986/
#ruvds_перевод #очистка_воздуха #фильтры #hepa #merv #экология #diy