Heating and Cooling — FAQ
What size air purifier do I need for my living room?
Measure your room's square footage and choose a purifier rated for that size or larger. For living rooms, select a model covering at least 20% more area than your space for faster air changes. Open floor plans should use the total combined area of connected spaces.
How often should I replace HEPA filters?
True HEPA filters last 6-12 months depending on air quality and usage hours. Units with washable pre-filters extend HEPA life by 2-3 months. Most models have indicator lights, but check filters visually every 3 months in high-pollution areas or homes with pets.
Will an air purifier help with allergies and pet dander?
Yes, True HEPA filters capture 99.97% of allergens including pollen, dust mites, and pet dander as small as 0.3 microns. For best results, run the purifier continuously in your main living area where pets spend time. Combine with regular vacuuming using a HEPA-filter vacuum.
Where should I place my air purifier in the living room?
Position the purifier 3-5 feet away from walls and furniture for optimal airflow. Place it near pollution sources like pet areas or seating zones, but avoid corners. Ensure intake and output vents remain unobstructed. Elevate 12-24 inches off the floor for better circulation.
Are washable filters as effective as replaceable ones?
Washable pre-filters effectively capture large particles and extend HEPA filter life, but they don't replace True HEPA filtration. HEPA filters themselves cannot be washed—water damages the fiber matrix. Use washable pre-filters for cost savings, but never skip HEPA replacements.
Is UV-C light necessary in an air purifier?
UV-C light kills bacteria and viruses but adds cost and consumes more power. For allergy and dust concerns, True HEPA filtration alone suffices. Consider UV-C if household members have weakened immune systems or during flu season. Most quality purifiers capture microbes mechanically without UV.
