I left my Holmes HEPA 2 filter behind. It would filter dust, smoke, pollen and yes, Covid19 from the air. Not just "so much" but greater than 99.9%.
Yes, even the virus. All of it.
It was a large unit not all tall but every bit as fat as a wheeled battery charger.
The replacement filters are not cheap either.
But for unexcelled purifying a "HEPA 2" filter is the cat's meow.
Every few years we had a bloom of a nocturnal plant. Even with Loratadine, an effective oral antihistamine, I could not sleep. After I smuggled the Holmes filter, the symptoms stopped 100% and I ceased the medicine.
The stupid virus seems like it's going to be around long enough to almost justify the purchase a HEPA 2 filter, with fan. It takes a strong, well made blower to push air through the HEPA 2 media.
The EPA, the CDC, and JAMA has proven the effectiveness of HEPA 2 against the COVID Virus
It would filter out contaminated air from a fire, no sweat. It filtered out the intense aroma of a Night Blooming Jasmine just outside the bedroom window.
A rough guesstimate for cost, would place the cost for a 5 story 100 bed hospital at seventeen million dollars purchase and installation and fifteen thousand dollars a w e e k to renew elements. So that thought flies out the window, never mind Hazmat disposal of used filters.
HEPA 2 is a great option despite it's cost for RV use. I love how it filters out fish fry odors from the galley. It would take a half horsepower ball bearing squirrel cage blower and 20" square, filter element to satisfy the needs of a 35' 5th wheel trailer.
