North Box Systems

North Box Systems

@northboxsystems.bsky.social

Made-in-Canada PC-fan based air purifier kits: https://www.northboxsystems.ca

2.3K followers291 following250 posts

North Box Systems
@northboxsystems.bsky.social

With the Fall Covid Vaccine campaign ramping up in Canada here is a great paper on the Nuvaxovid option for those who find mRNA vaccines hard to tolerate: #CovidIsNotOver #Novavax #Nuvaxovid docs.google.com/document/d/1...

docs.google.comNuvaxovid COVID VaccineWhat is the Nuvaxovid COVID vaccine and how is it different? Written by: Jeff Gilchrist & Paul Seaman Link to this document: https://tinyurl.com/NuvaxovidVaccine Last updated: October 7, 2026 This ...
North Box Systems
@northboxsystems.bsky.social

One thing Covid has ended is the "droplet" dogma and the importance of mitigating the risk posed by aerosol transmission: #CovidIsAirborne #airpurifier #IndoorAirQuality

🇨🇦Joe Vipond🇨🇦@jvipondmd.bsky.social

New Scientific Paper Essential Read Alert! (yes, that's a thing) Want to understand the factors involved in aerosol/airborne viral transmission? Easy to understand. excellent read. H/T to @barryhunt008.bsky.social for the share paijournal.com/index.php/pa...

paijournal.comView of Heterogeneity of Airborne Virus Transmission in the Built Environment: A Narrative Review
North Box Systems
@northboxsystems.bsky.social

We've shipped air purifiers across Canada and I've had nothing but wonderful interactions with our fellow citizens who are nothing but kind and compassionate. We will overcome this attack on our nation by sticking together and building on our strengths. #buycanadian #airpurifier #airquality

North Box Systems
@northboxsystems.bsky.social

Really excellent deal on MERV13 3M filters!

David Elfstrom 🍁@davidelfstrom.bsky.social

Heads up Canadian #crbox builders and PC fan air cleaner enthusiasts – Canadian Tire has a sale on 2-packs of Filtrete 1900 starting Thursday for $26.99 ($13.50 each). Normal price is $64.99, hope they are in stock by then. No rainchecks. @northboxsystems.bsky.social (That's like $9.64 each in USD)

North Box Systems
@northboxsystems.bsky.social

Woke up today to a Martian-like sky, wildfire smoke has engulfed Toronto in a big way! We are trying our best to pump out air purifiers but they are all hand-built and demand has been high this year! #wildfiresmoke #indoorairquality #airpurifiers

North Box Systems reposted

James Andrew Smith
@drsmith.bsky.social

Here's the difference in particulate matter readings inside and outside. Inside I run multiple air cleaners, including ones from @northboxsystems.bsky.social . Outside, it's wildfire smoke.

James Andrew Smith@drsmith.bsky.social

I missed the beginning of the CBC Radio interview so didn’t know that it was the awesome @ericbkennedy.bsky.social being interviewed about the wildfire smoke in Toronto

North Box Systems
@northboxsystems.bsky.social

Why are we still making air purifiers targeting Coronavirus? There is no downside to cleaner air but the suggestion that Covid is over is just not supported by the facts: #CovidisAirborne #LongCovid #IndoorAirQuality x.com/keetmuise/st...

x.comKeith (@keetmuise) on XWe want to be proven wrong, but until public health does their job we are all in deep trouble. Here is the link to 488,000 publications on the dangers of Covid. https://t.co/ZzkR7exPWR
North Box Systems
@northboxsystems.bsky.social

Wildfire season is well under way and this is the first 10 of almost 50 air purifiers for the BC Wildfire Service. They will help protect their crews from airborne smoke particles while they sleep in their tents set up nearby active fires. #wildfiresmoke #airpurifier

North Box Systems
@northboxsystems.bsky.social

Here is our prototype activated carbon air cleaner. I'm hoping it will be effective against wildfire smoke VOCs. It uses 3 x Arctic P14 Pro fans with a speed controller. #VOC #IndoorAirQuality #AirPurifier #wildfiresmoke

North Box Systems
@northboxsystems.bsky.social

It ain't pretty but here is the working prototype of the "SmokeBuster". A Dupont Activated Carbon "odor and VOC filter" with 3 stacked P14 Pro speed controllable fans. Getting this ready in time for wildfire season, this year could be really bad. #wildfiresmoke #airpurifier #carbonfilter

North Box Systems
@northboxsystems.bsky.social

3D printing some prototype parts for our new stand-alone carbon filter designed to help mitigate VOC gasses. Wildfire season is rapidly approaching and I'm hoping to have these ready soon! #airpurifier #VOC #wildfiresmoke #indoorairquality

North Box Systems
@northboxsystems.bsky.social

Very interesting study, indoor air quality is a lot more complex than most people realize!

Dustin Poppendieck @poppendieck.bsky.social

If you size a air cleaner, you need to size it to the mixing volume, not the room volume! "... room dimensions underestimate the mixing volume of a space..." Size the CADR to the volume between closed doors. pubs.acs.org/doi/full/10....

pubs.acs.orgContextual Factors That Impact the Performance of Portable Air Cleaners: A Critical ReviewPortable air cleaners (PACs) can reduce indoor concentrations of fine particulate matter (PM2.5), although their impact can vary substantially. This review explores how PAC performance measured during an intervention can be affected by the indoor and outdoor environment, device operation, and study methodology. A literature search identified 41 randomized interventions conducted in homes (64 articles) satisfying the inclusion criteria. Reporting of key contextual factors was inconsistent between investigations, and many factors were frequently absent from discussion. Average reductions in indoor PM2.5 concentration ranged from 6.3–82.7% (effectiveness) and 1.2–54.9 μg·m–3 (absolute reduction). Neither measure was positively associated with PAC cleaning power (clean air delivery rate, CADR, or volume-normalized CADR, CADR/V). Concentration reductions were frequently lower than expected based on nominal CADR/V, suggesting that PACs operated at lower speeds than reported and/or that room dimensions underestimate the mixing volume of a space. Effectiveness was greater when windows were closed and when testing was conducted in bedrooms compared with living rooms. Absolute reductions were greater, with larger variance, as ambient PM2.5 concentrations increased. Accounting for these factors may strengthen assessments of past and future interventions and guide the implementation of PACs to reduce indoor PM2.5 concentrations and improve associated health outcomes.
North Box Systems
@northboxsystems.bsky.social

Picking up the first batch of aluminum panels from our new fabricator shop, located a lot closer to help reduce our carbon footprint by avoiding a lot of shipping. Now it's testing phase to make sure we didn't mess anything up! #manufacturing #airpurifiers #CovidIsAirborne

North Box Systems
@northboxsystems.bsky.social

Our most affordable, portable air purifier kit is now available from Donate A Mask Canada! #indoorairquality #airpurifier #CovidIsAirborne

Donate A Mask Canada@donatemask.bsky.social

The North Box Guardian Air Purifier Kits are now available in our store!🎉 ✔️ Portable with built-in handle ✔️ Compact design ✔️ Powerful multi-fan airflow ✔️ Replaceable filters Cleaner air at home, work, for hospital stays, or while travelling. buymask.ca/products/north-box-guardian-air-purifier-kit

North Box Systems
@northboxsystems.bsky.social

Extensive review of our 5X air purifier that highlights some of our main objectives: repairability and the use of off-the-shelf parts that can easily be swapped with other brands. #Covidisairborne #cleantheair #airpurifier www.geekextreme.com/northbox-5x-...

geekextreme.comNorthBox 5X Classic Review: Stop Paying For Expensive Air FiltersDitch expensive brand-locked HEPA filters right now. This in-depth NorthBox 5X Classic review proves why modular PC fans and MERV13 filters slash your costs.
North Box Systems
@northboxsystems.bsky.social

Using easy to find off-the-shelf parts and non-proprietary filters and fans has been our goal from the start.

EDC🇺🇸🇬🇧🇫🇷🇩🇰🇨🇦🇦🇺🇵🇹🇩🇪🇮🇹🇫🇮🇸🇪@simplyedc.bsky.social

Repair Manifesto: If we can't fix it, we don't own it. - Repair is better than recycling. - Repair saves us money. - Repair teaches basic engineering. - Repair saves the planet. - Repair connects people and things. - Repair is sustainable. #Minimalism

North Box Systems reposted

Omg. WTF is Happening?
@lalahaenzy.bsky.social

Sir Ian McKellen performing a monologue from Shakespeare’s Sir Thomas More on the Stephen Colbert show. Never have I heard this monologue performed with such a keen sense of prescience. Nor have I ever been in this exact historical moment.TY Sir Ian, for reaching us once again. #Pinks #ProudBlue

North Box Systems
@northboxsystems.bsky.social

Got this email from "Ralph, BC" describing a great way to automate operation of our Polaris Ultra air purifier: Very satisfying to see how other people are making use of them for more than Covid risk mitigation.

North Box Systems reposted

Donate A Mask Canada
@donatemask.bsky.social

Today is our 4th anniversary! Since 2022, we’ve been sending free respirator masks 😷 on request to people across Canada 🇨🇦. Help us continue to protect your neighbours. 🩵 Donate today: donatemask.ca/donate #WeKeepUsSafe #StillMasking #SoManyReasonsToMask #Anniversary

North Box Systems
@northboxsystems.bsky.social

If you are in the Toronto area, UofT Medstore has a large qty of KN95 respirators at $.01 / box of 20. We've picked up 50 boxes and will toss in a 10-pack in every order we ship out to help distribute. 1/2 #CovidIsAirborne #KN95 #IndoorAirQuality