Do I need an air purifier if I already have a good HVAC filter?
They solve different problems. An HVAC filter only cleans air that's actively circulating through your ductwork, while a purifier continuously cleans the air in a specific room — useful for bedrooms, nurseries, or spaces with higher allergen or odor concerns.
How often should I replace my air purifier's filter?
Most HEPA purifier filters last 6–12 months with regular use, though pre-filters may need cleaning or replacing more often. Check your specific model's guidance, since replacement intervals vary by design and usage.
Can I wash and reuse an air purifier filter?
It depends on the filter type — some pre-filters are washable, but true HEPA media generally isn't designed to be washed and reused, since washing can damage the fine fiber structure that traps small particles.
Do air purifiers help with mold spores?
A HEPA-equipped purifier can capture airborne mold spores effectively, but it won't address an active mold source in the home — it's a complement to fixing the underlying moisture problem, not a substitute for it.
Are air-purifying plants actually effective?
Houseplants provide some measurable air quality benefit, but the effect in a typical room is modest compared to a mechanical air purifier or a high-MERV HVAC filter — they're a nice complement, not a replacement.
