How to remove and replace Hepa Air Filter on a Dyson DC65 / DC41 / Dyson Ball vacuum cleaner. There are two filters that can be replaced. The one on top can be washed but if it's torn up, then you can replace it along with the one on the bottom. I purchased the replacement filters on Amazon, but you can get them at Bestbuy, Target or Walmart. Below is an affiliate link to purchase the replacement filters.