Coway Replacement Filter Set AP1018 Classic Whether as a spare or as replacement, the Coway Replacement Filter Set AP1018 Classic will continue to maintain a clean, breathable environment in your room. The Set of replacement filters for the Coway 1018F Classic Air Purifier, comprising of: 1 x Hepa Filter - The high-performance synthetic HEPA filter is excellent at removing cigarette smoke and fine dust. 1 x Carbon deodorisation filter - The granular activated carbon deodorizing filter effectively removes odors including food smells and unpleasant household odors and harmful gases Filter Replacement Instructions When replacing with new filters, here are some thing to consider: During filter assembly, be sure to check the front. Only use genuine Coway filters to keep the purifier at its optimal performance. Always unplug the power plug before replacing filters. How to replace Deodorization/HEPA flters (replace every 24/12 months) Step 1. Open the front cover and remove the pre-filter from the purifier, then take out the deodorizing filter and HEPA filter. Step 2. Replace them with a new deodorizing filter and new HEPA filter with the plastic packaging removed. Reassemble the purifier in the reverse order you disassembled it and close the front cover.