What is Filter cost & life?
Replacement price and months of use.
Short answer
Get the replacement filter price before buying the machine.
Filter cost & life when buying a air purifier
Replacement price and months of use.
Why it matters: In high-pollution cities filters last 6–8 months, not the claimed 12. This is the real running cost.
Look for: Get the replacement filter price before buying the machine.
Full Air Purifier buying guide