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The air that you breathe all goes through your Aprilaire purifier, so why would you wait to change the filter? You probably know that dust, allergens, and even bacteria and mold can build up in an old filter, and if you wait too long to change it, the filter that was supposed to be helping you will be distributing a small army of these allergens into your air to attack your lungs and sinuses. Don't let them! Change your filter at least once a year to ensure that your air is the same top quality you expect from your Aprilaireair purifier. 2-Year Supply!
Please note the following important information about this product from Think Crucial: (i) it is a generic replacement, NOT a Aprilaire® Original Equipment Manufacturer (OEM) product; (ii) because it is not a Aprilaire® OEM product, it is not covered by any Aprilaire® guarantee or warranty; (iii) use of this generic replacement may violate or void Aprilaire®'s guarantee or warranty - it is entirely your responsibility to check, and entirely your risk if you decide to use this product; (iv) we do not guarantee or warrant that this generic replacement is compatible with any product from Aprilaire® or any other provider. Please check your manufacturer's warranty with regard to the use of non-OEM parts. Think Crucial provides no warranty or guarantee with regard to the product or its compatibility with your Aprilaire® product. The Aprilaire® brand and all Aprilaire® trademarks belong to Aprilaire® or its affiliates, and are used here only to explain the compatibility features of the generic replacement product.