Why do you need to change the filters at their specified time? - To preserve your health first and foremost. - To preserve the lifespan of the device, so it lasts longer with you. - Filters have a specific lifespan, and once it ends, they must be changed. If the filters are not changed, many problems can arise, including: - Increased salts in the water. - Increased sediment and bacteria in the water. - Complete change in the taste of the water. - Complete or partial blockage of the filters. - Reduced effort from the device's motor. RQ MAX Company for Water Purification and Treatment Provides you with the finest types of filters that last a long time and relieve you of water concerns completely. - Six-month filters. - One-year filters. - Two-year filters.