As I stated from the first post, I am using other disposable media and don't plan on changing to washable, I just want to learn why they are not recommended.
what characteristic of filter makes it "too coarse"?
Homeowners don't wash them as often as needed, they are too coarse to effectively filter the air.
can you be a little more descriptive on why it is worthless.
there are 2kinds of washable filters the metal mesh ones and the plastic mesh ones and the metal one is worthless and the plastic one are very restrictive.
Not all electrostatic filters are the same. Most are washable, but not all are life time filters. Find out what type of media is used on the inside. If foam or polyester is used it is not a life time filter. Foam deterriorates and polyester will clog up and can't be cleaned.
1. Pressure drop. Find out what the final resistance is. A happy medium needs to be maintained between efficiency (capturing particles) and restricting air flow.
2. Cleaning is recommended every 3 months.
3. Permanent filter media should not degrade with normal use. However, if a UV light is present it could damage the media.
4. Merv values. Unfortunately some companies may exaggerate, but you can always ask for the test results. Merv 7-8 will work fine for most homes.
Hope this helps. Check out airclean.com for more information
Media filters rock. Most people don't wash washable filters enough. It's easier for me to use a 4" media and replace it once or twice a year. Knowing it's doing a great job filtering with minimal pressure drop. If your a tight wad a washable filter may be good for you. Do you still have the first dollar you made? Lol
washable filters are great because