Hard water is characterized by its dissolved high mineral content, mainly consisting of calcium and magnesium. It is an extremely common issue, with 85% of the water in the U.S. being classified as hard water. While hard water does not necessarily pose a health risk, it is extremely harmful for appliances exposed to the mineral elements.
Repeated exposure can cause an off-white scale build-up in appliances and pipes and ultimately decrease their effectiveness and even shorten their useful life. A demineralization filter is an excellent way to prevent the "white dust" and lime scale residue build-up that results from hard water, with the added benefit of protecting and extending the life of your humidifier.
The Crane HS-1931 License Filter is compatible with both the Crane SpongeBob (EE-5063) and Hello Kitty (EE-4109) character humidifiers.
Frequently Asked Questions
What is your return policy?
We offer a 30-Day Money-Back Guarantee on all of our products. If you are not satisfied with your purchase for any reason, simply return the product to us within 30 days and we will process your refund. For policy details and exclusions, please read our full Return Policy
What is your shipping policy?
Standard shipping (3-6 business days) is free to the lower 48 states.
Expedited shipping is available for select products. Shipping to Hawaii, Alaska, and Canada may incur an additional fee, depending on the items ordered. With the exception of Canada, we do not currently ship to international locations. Items typically ship 1-2 days after you place your order. For more information, visit our Shipping and Delivery page.
What types of payment methods do you accept?
We accept Visa, MasterCard, American Express, Discover Card, and Diners Club credit cards. Additionally, you can checkout using PayPal.
As a Sylvane shopper, you can purchase with confidence knowing that your information will always remain confidential and secure at all times. Our website is tested daily for security flaws by a well-known third-party security firm. It also meets the security recommendations of the Department of Homeland Security's National Infrastructure Protection Center (NIPC) and passes the FBI's Twenty Most Critical Internet Security Vulnerabilities Test.
After I place my order, when will my credit card be charged?
Your credit card will be charged when your order is shipped.
Want to submit an FAQ? Hold tight. We're enhancing this section to make it even more useful for you. Feel free to call us at 1-800-934-9194 for answers to any product-related questions.