The core of a fresh air system lies in its filters. Failing to replace them on time not only reduces purification efficiency but can also cause secondary pollution. Little Ant Master has compiled this maintenance guide: Filter Levels and Replacement Intervals: - Pre-filter (G4): Clean or replace every 1-3 months - Medium-efficiency filter (F7): Replace every 3-6 months - High-efficiency filter (H3): Replace every 6-12 months - Activated carbon filter: Replace every 6-12 months Actual intervals depend on local air quality and usage duration. Replacement Indicators: - Significant rise in PM2.5 levels - Noticeable decrease in airflow - Unpleasant odor from air outlets - Increased operational noise - Reached the manufacturer's recommended replacement time Routine Maintenance: - Monthly inspection: Wash and dry washable pre-filters as needed - Check sealing integrity of duct connections - Clean intake and exhaust grilles - Inspect heat exchanger core for cleaning needs - Verify control panel display is functioning normally Important Notes: - Purchase original or compatible specification filters - Ensure correct installation direction and proper sealing during replacement - High-efficiency filters cannot be washed; they must be replaced - Record the date of each replacement for better management Little Ant Master provides filter replacement and whole-system maintenance services for all brands and models. Call us at 400-1060-908 to breathe clean, fresh air.
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