Using a Fan

The disadvantage of most off the shelf commercial air filter units is the expensive disposable filter element. Their advantage is the small particle size for the filter element. They are weak on amount of activated charcoal or carbon in the pre-filter. Making your own has some advantages with respect to cost and flexibility of what you wish to filter. The filter elements become reusable. The unit becomes rebuildable. Could be used after the pole shift for filtering volcanic ash and hydrocarbons expected in the tail of the 12th or could be used today after you see contrials (White jet trails in the sky)

How to build an inexpensive air filter, that uses lots of activated filter charcoal: The minimum air particle size of the filter is adjustable for your purposes depending on the fan and filter elements used. A squirrel cage blower will work with a higher pressure drop across the filter and allow filtering to smaller particles. In this case, one could use one or more layers of micro filtration vacuum cleaner bag material cut to fit the bucket. Hoover makes a filter paper that traps 100% of dust mites and their eggs and 99.98% of ragweed along with common grass pollens.

I built one to keep the air volume flow up. I used the basics and the optional 4 stage furnace filter. Note the filter components are washable or can be taken apart and blown off with an air compressor or cleaned with a vacuum cleaner. The Fan with the plastic hinge points (plastic screw with nut) cut off, just fits in the bucket, leaving a few inches at the bottom for the air to come out.

Offered by Mike.