Quick Take
The Therapure TPP440 unique selling point is the permanent filter, though performance may lag true replaceable HEPA.
Overall Score: 7.7/10 - Low Maintenance Option
Safety Analysis - Score: 7.5/10
Permanent HEPA-type filter. UV-C included. Note: permanent filters may be less effective than replaceable.
Performance - Score: 7.2/10
300 sq ft coverage. CADR not independently verified. UV-C adds claimed germ reduction.
Value - Score: 8.5/10
At $80-100 with no filter replacement, long-term cost is low. Trade-off is potentially lower performance.
The Bottom Line
Low maintenance option but replaceable HEPA typically performs better.
