I am working on a design for a clip on screen which would accept an 1in washable filter media. I'm definitely putting some wear and tear on the machines with what time doing.
Discussion
That's awesome! Using a washable/resusable filter is a great idea. I've done a little testing with the black prefilter material commonly used on indoor air purifiers and it does increase the fan speed since it is restricting airflow to some extent... So using more electricricity initially anyway, but then again after the hashboards are all dirty without a filter the fan speed may be even higher.