by 
The Curious Bag
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<h4 class="dechead">On One Hand: Washable Furnace Filters Save Waste and Money
A washable furnace filter can last for years, so using one means you will not be adding disposable filters to the landfill. You can also save money in the long run, as you may find washable furnace filters for about the same price as disposable ones that only last three months.
On the Other: They Are Difficult to Clean
Washable furnace filters may be difficult to clean thoroughly. This makes them less effective. They can also allow small particles to get through, which is especially problematic for people with respiratory problems such as asthma, who may grow ill due to exposure to these particles.
Bottom Line
Consider your situation before purchasing a washable furnace filter. If you are willing to take the time to properly clean the filter each month and no one in your home suffers from respiratory problems, a washable furnace filter may be good for you. Otherwise, a quality disposable furnace filter may be the best choice.
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