[COMPATIBLE MODELS] - Premium replacement filter TP04 HP04 is specially designed for Pure Hot + Cool HP04, for Pure Cool TP04, for Pure Cool DP04 and Tower Fan, models TP05 and DP05. Compared to part number 968707-04, 968708-04, 969048-01. Please confirm your model is TP04 HP04 DP04 TP05 and DP05 before ordering. [INSTALLATION TIPS] When installing the carbon filter, please place the buckle side up; After installation is complete, you need to reset the filter, otherwise the machine will not recognize the filter. ①To reset the carbon filter, please press and hold the "Oscillation" button for 5 seconds until the countdown reaches 1. ②To reset the HEPA filter, please press and hold the "Night Mode" button on the remote control, the screen will countdown from five, ending with the default screen. [PREMIUM TRUE HEPA FILTER] - Our TP04 HP04 DP04 air filter replacements come with dual-layer filtration. The H13 True HEPA filter helps trap 99.7% of airborne particles as small as 0.3 microns,