How to Clean a Shark NeverChange HP300 Air Purifier

Step-by-step instructions

Step 1: Verify the model and switch off safely

Check the rating label for HP301, HP302, or HP305 and use the matching HP300 guide. Turn the purifier off, unplug it, and wait for the fan to stop. Move it to a clean dry work area by holding the body rather than the grille or power cord. Do not service it while an odor cartridge is leaking or while moisture is present around the outlet.

Step 2: Wipe and vacuum the exterior first

Use a dry microfiber cloth on the display and housing. Vacuum loose hair around the intake at low suction before opening the filter area so debris does not fall inward. If a mark needs moisture, wipe with a well-wrung cloth and dry immediately. Do not spray cleaner at the purifier, controls, exhaust, sensor openings, or plug.

Step 3: Remove the Debris Defense screens

Open only the access parts shown in the HP300 manual and remove the washable outer screens without disturbing the HEPA media. Note their orientation and inspect tabs for damage. The screens capture large hair, dust, and dander before it reaches the HEPA filter, so a visible mat of debris is a sign to clean them rather than increase fan speed.

Step 4: Vacuum, wipe, or rinse the washable screens

Shark says the Debris Defense screens can be vacuumed, wiped, or rinsed. Start with the dry method: support each screen and use a soft brush attachment on both sides. For oily or clinging debris, rinse only the removable washable screen under gentle water. Do not use bleach, solvent, scented cleaner, a stiff brush, or high-pressure spray.

Step 5: Air-dry screens completely

Shake off loose droplets, blot the frame, and set screens upright in a shaded ventilated place. Do not use a hair dryer, radiator, oven, or direct high heat. Reinstalling a damp screen can send moisture toward the HEPA media and motor. Drying time varies; the screen must be dry in every corner and under its frame.

Step 6: Protect the NeverChange HEPA filter

Do not rinse, wash, soak, scrub, or apply cleaner to the HEPA filter. Avoid tapping it against a hard surface or vacuuming the pleats unless the exact owner guide expressly instructs that treatment. Long-life does not mean indestructible: torn, wet, smoke-saturated, or heavily contaminated media should be evaluated with Shark support and replaced only by a compatible part.

Step 7: Clean accessible dry dust near the compartment

With the filter area open and the unit unplugged, lift loose dust from accessible plastic edges using a dry cloth or low-suction brush. Do not push a swab or vacuum nozzle into the fan, electronics, or air-quality sensor. If the display gives abnormal readings after the room has stabilized, follow Shark's model-specific sensor troubleshooting rather than applying liquid.

Step 8: Check the odor cartridge separately

The Odor Neutralizer Technology cartridge is not a washable filter. Keep it dry, follow its own installation and replacement instructions, and avoid touching or spilling its contents. If the scent is too strong, adjust or remove it only as the HP300 guide permits. Never mask a burning, electrical, or mildew odor with fragrance.

Step 9: Reassemble, test, and monitor airflow

Reinstall the dry screens in their original orientation, close every access cover, and set the purifier upright with required clearance. Restore power and listen for rubbing or vibration. Normal maintenance should improve unrestricted airflow without a rattling sound. Unplug and contact Shark if liquid reached the unit, the cord is damaged, an error remains, or the fan smells hot.