1. Target Pollutants: Identify the main air contaminants you want to address (allergens, smoke, VOCs, etc.). This guides your filter choices and overall effectiveness.
2. Room Size and Clean Air Delivery Rate (CADR): Choose a purifier with a CADR suitable for your room size. Higher CADR indicates faster air cleaning.
3. Filter Types and Stages: HEPA filters are essential for most common pollutants, but consider additional filters like activated carbon for gases or UV for germs
4. Air Changes per Hour (ACH): Look for ACH values of 4 or higher for effectively purifying air in enclosed spaces, especially for allergy sufferers.
5. Noise Level: Prioritize quiet operation (below 50 dB) if using the purifier in bedrooms or during sleep.
6. Energy Efficiency: Choose Energy Star certified models for lower running costs.
7. Filter Replacement Reminders and Costs: Ensure timely filter changes with indicator lights or alerts. Factor in ongoing filter replacement costs when budgeting.
8. Smart Features: Consider app control, air quality sensors, auto modes, and sleep timers for added convenience and personalization.
9. Warranty and Manufacturer Reputation: Opt for purifiers with good warranties and reliable brands for peace of mind.
10. Additional Points: Check for ozone emission (avoid models exceeding safe limits), portability (if needed), and aesthetics (matches your style).