Our goal is to make filter replacement simple and affordable for all of our customers. To accomplish that, we've simplified our replacement solutions to two options. 1) Self install replacement kits that can be ordered as needed for a one time charge. 2) Plans billed monthly, that include annual/bi-annual professionally installed filter replacements, which fit the majority of our clients needs. However, filter lifespan can vary based on users, usage, and water source quality. If you've signed up for a plan, and one or more of these variables causes you to need your filters replaced more frequently, simply contact us, and one of our specialists will be more than happy to create a more personalized filter swap schedule, based on your specific needs. Finally, if none of our plans below are a good fit for you, you can always call us and schedule a filter change on an as needed basis.