{"id":25,"date":"2026-07-05T11:09:22","date_gmt":"2026-07-05T09:09:22","guid":{"rendered":"https:\/\/osmosiscostadelsol.com\/cada-cuanto-cambiar-filtros-osmosis\/"},"modified":"2026-07-05T11:11:51","modified_gmt":"2026-07-05T09:11:51","slug":"cada-cuanto-cambiar-filtros-osmosis","status":"publish","type":"post","link":"https:\/\/osmosiscostadelsol.com\/en\/cada-cuanto-cambiar-filtros-osmosis\/","title":{"rendered":"How often should reverse osmosis filters be changed?"},"content":{"rendered":"<p>A reverse osmosis system needs <strong>very little maintenance<\/strong>, but not zero. If you let too much time pass between changes, water quality drops and the most expensive part, the membrane, wears out early. The good news: it's simple, cheap and schedulable. Here's exactly how often.<\/p>\n<h2>The filters and their schedule<\/h2>\n<p>A <a href=\"\/en\/osmosis-inversa-domestica\/\">residential reverse osmosis<\/a> system has <strong>five stages<\/strong> with different lifespans:<\/p>\n<ul>\n<li><strong>Sediment and carbon (stages 1-3)<\/strong>: changed <strong>once a year<\/strong>. Son los \u00abpre-filtros\u00bb: protegen la membrana quitando arena, \u00f3xido, cloro y malos sabores.<\/li>\n<li><strong>Osmosis membrane (stage 4)<\/strong>: lasts <strong>2-3 years<\/strong> depending on the water and use. In high-limescale areas like the Costa del Sol, it leans closer to 2 years than 3.<\/li>\n<li><strong>Remineralizing postfilter (stage 5)<\/strong>: changed together with the pre-filters, once a year.<\/li>\n<\/ul>\n<h2>What happens if I don't change the filters<\/h2>\n<p>The <strong>activated carbon<\/strong> es el que \u00abprotege\u00bb la membrana quitando el cloro. Si se satura y sigue llegando cloro, la membrana empieza a degradarse mucho m\u00e1s r\u00e1pido: en vez de 2-3 a\u00f1os, puede durar menos de un a\u00f1o. Y la membrana es la pieza m\u00e1s cara del equipo.<\/p>\n<p>Also, a saturated pre-filter means the water comes out with <strong>less flow<\/strong> y con m\u00e1s sabores raros. Es la se\u00f1al m\u00e1s habitual: \u00abel grifo tarda m\u00e1s y no sabe tan bien\u00bb.<\/p>\n<h2>Signs it's time for a change (even before the year is up)<\/h2>\n<ul>\n<li><strong>Flow drops<\/strong>: filling a glass takes longer than usual.<\/li>\n<li><strong>The chlorine taste returns<\/strong>: the carbon is spent.<\/li>\n<li><strong>TDS rises<\/strong>: if you measure with a <a href=\"\/en\/tds-agua-que-es\/\">TDS meter<\/a> and it goes past 50 ppm, the membrane is asking to be replaced.<\/li>\n<li><strong>Odd noise or dripping from the unit<\/strong>: check it \u2014 not always the filters, but worth a look.<\/li>\n<\/ul>\n<h2>How we handle it for you<\/h2>\n<p>If we <a href=\"\/en\/osmosis-inversa-domestica\/\">installed your system<\/a>, we note the date and <strong>remind you ourselves<\/strong> when the change is due. We come, change the filters, check for leaks and verify water quality with a TDS reading. It's a <a href=\"\/en\/mantenimiento-filtros-osmosis\/\">fixed-price maintenance<\/a> with no surprises and nothing for you to track.<\/p>\n<p>Got a system from another brand that hasn't been checked in a while? We service it too: <a href=\"\/en\/contacto\/\">book a visit<\/a> and we'll get it up to scratch.<\/p>","protected":false},"excerpt":{"rendered":"<p>Sediment and carbon filters are changed once a year; the membrane, every 2-3. We explain why, what happens if you delay, and how we track it so you don't have to.<\/p>","protected":false},"author":1,"featured_media":27,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-25","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/posts\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/comments?post=25"}],"version-history":[{"count":1,"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/posts\/25\/revisions"}],"predecessor-version":[{"id":26,"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/posts\/25\/revisions\/26"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/media\/27"}],"wp:attachment":[{"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/media?parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/categories?post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/osmosiscostadelsol.com\/en\/wp-json\/wp\/v2\/tags?post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}