A:Answer The ENERGY STAR® Qualified LG 27.9 cu. ft. Built-in French Door Smart Refrigerator with Wi-Fi Enabled in Stainless Steel, Model # LFXS28968S has a built-in LG 6 month / 200 Gallon Capacity Replacement Refrigerator Water Filter, Model # LT1000P, that has to be changed approximately every 6 months or when the Replace Filter icon turns on. The LG 6 Month Replacement Refrigerator Air Filter (Part # ADQ73214404), Model # LT120F is the same Air Filter used in all LG Refrigerators. If you have additional concerns or questions, you can contact our Customer Support by any of the below options: Phone: 1-800-243-0000 LiveChat: https://www.lg.com/us/support/chatbot Email: https://www.lg.com/us/support/email-appointment Facebook Messenger: https://www.facebook.com/LGUSA/ Twitter: @LGUSSupport The LG Community Forum is also a great resource for getting help from other LG customers: https://lgcommunity.us.com/