Best for
- Value-focused purifier buyers
- People comparing premium and budget models
- Owners who run purifiers continuously
Watch for
- Using old filter prices from reviews
- Assuming the longest advertised life in every home
- Comparing purchase price without recurring cost
Calculate a range, not one perfect number
If a filter costs $50 and typically lasts 6–12 months, annual filter spending is roughly $50–$100 before tax or shipping. That range is more honest than assuming the best-case interval.
Repeat the calculation over three or five years to expose differences between models.
Check genuine-filter availability
Current manufacturer stock matters. A low published filter price is less useful if filters are frequently unavailable or the model is near end of life.
Record the exact compatible filter model before purchasing the purifier.
Add electricity for total ownership cost
Filter spending and electricity together give a more complete annual operating estimate. Purchase price is then only the upfront component.
AirVerdicts will maintain model-specific ownership-cost pages as verified pricing data accumulates.
Use the same sizing basis across brands. Room-size claims can use different air-change assumptions. When possible, compare published CADR and calculate the airflow your room actually needs.