home air filters

Home air Filters


Tip of the Iceberg…

I recently looked into buying a home air filter for a classroom and was astounded at the amount of info. available, way more than anyone wants to know. Here’s my take for what it’s worth…

I wanted something I could pick off the shelf at Cdn Tire so I went on line to double check whether the 2 options of Honeywell’s I could take home that day would work.

Honeywell is well recommended but there were further considerations…

  • true HEPA filter included
  • room size
  • .3 micron level filtration which meets desired covid and particulate matter filter standards
  • energy efficiency
  • noise levels
  • prefilters
  • replacement filters required
  • filter and replacement parts in stock
  • shipping costs
  • clean air delivery rate (CADR) for a 600 square foot room our looking for a 390 CADR rating loosely translated: the number of times an hour the air is completely recycled


5 Best Honeywell Air Purifier Review & Filter Cost/yr – 20201. Honeywell True HEPA HPA300 (Best in Coverage) Honeywell HPA300 is the most popular model, which is the iconic Honeywell 50250 air purifier’s successor. The true HEPA and odor filtration with a high airflow rate make it hugely popular at a competitive price.reviewsofairpurifiers.com

Do HEPA air purifiers filter out the COVID-19 virus? For more info. https://www.vaniman.com/do-hepa-air-purifiers-filter-out-the-covid-19-virus/

For under $50.00 The Airshed Management Society will happily tell you how to buy and build your own effective home air filter….for the video and links contact me at coordinator@cleanairplan.ca

And what is the difference between HEPA and Merv? I think I answered that in another entry but here again:

MERV & HEPA Rating For Air Filters

Seems like amazon has all sorts of models on line and available – the aeromax 300 is a well rated 600 square foot option but sounds like it might be noisy on high speed. Thing is if the filters are on 30 minutes before class they can high speed until everyone settles down then on a slower speed they should work just fine cycling the air at a slower rate.


2020 Best Air Purifier for Large Rooms & Spaces (Reviews & Buying Guide) | Home Air Guides2. Alen BreatheSmart Air Purifier. Covers 1,100 square feet. Next up is an extra large room air purifier that also gives you the flexibility to customize the internal HEPA filter and choose a front panel design that meets your individual needs.
Best HEPA Air Purifier 2020: Top 11 Reviews & Buying GuideBest for a Small Room: Levoit LV-H132 This compact air purifier is small enough to fit on your bedside table yet still powerful enough to keep dust, mold and other pollutants away.. When placed in a small room, it freshens up the air and clears up odors within minutes. If you are looking for a compact air purifier for a small to the mid-size room, the Levoit LV-H132 is perfect.coolandportable.com

Then I started thinking about face masks and learned that N 95 masks are what we all should be wearing outside anytime of year. I saw them sold as singles at Fields for $1.30 each. These actually do filter out incoming particulate but are not meant to filter out what is breathed out. The rating KN 95 related to an American Health and Safety standard and is a useful way to know we are going to get a reduction in those harmful particles. The covid particle will attach itself to other particles and while it is much smaller than PM2.5 it’s numbers will be reduced by reducing the PM2.5 paticles.

Are all HEPA filters the same?

The COVID-19 virus is approximately 0.125 Micron or 125 nanometers in diameter. (Source: National Library of Medicine)

COVID 19 virus particle size is 125 nanometers (0.125 microns); the range is 0.06 microns to .14 microns,” the post said. “The N95 mask filters down to 0.3 microns. So, N95 masks block few, if any, virions (virus particles). .https://www.usatoday.com/story/news/factcheck/2020/06/11/fact-check-n-95-filters-not-too-large-stop-covid-19-particles/5343537002/

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