New answers tagged ventilation
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Get an air-conditioning system. I got it because my room has no output air channel so adding an extra output air-channel through the air-conditioning system fixed the problem of smoky windows. It filters the air and it is pretty easy to install: it takes air 1 block inside and 1 block moving outside so the pipe just to the window for the output channel.
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I have not seen conclusive data about carbon stopping pollen.Carbon is very good at catching odour within in air and excellent at absorbing chemicals in water (ie chlorine)
I would strongly suggest you use a 5 micron sponge pre filter. This will stop bigger bits of pollen and other larger particles.
Then after the pre filter use a HEPA filter. You can find ...
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You'd be better off with a box fan as it has a large, square area that will support your filter media properly. It will need to be powerful enough to develop airflow despite the next addition.
Not sure if you can find it, but we have here available electrostatic filter media by the roll. Cut several pieces large enough to cover the inlet side of the box ...
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