MA-40 Replacement Filter Compatible with MA-40 Air Purifiers, 3-in-1 High-Efficiency Filtration System for MA40W MA40B, H13 True HEPA with Activated Carbon Pre-Filter

MA-40 Replacement Filter Compatible with MA-40 Air Purifiers, 3-in-1 High-Efficiency Filtration System for MA40W MA40B, H13 True HEPA with Activated Carbon Pre-Filter

ASIN: B0D3GFN62T
Analysis Date: Nov 10, 2025 (re-analyzed Nov 10, 2025)

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Review Analysis Results

C
Authenticity Grade
28.00%
Fake Reviews
4.31
Original Rating
3.70
Adjusted Rating

Analysis Summary

The review set shows moderate authenticity concerns with a mix of genuine and potentially suspicious reviews. Positive aspects include: natural variation in ratings (5, 4, 2, 1 stars), specific product comparisons, and detailed usage experiences. Concerns include: high concentration of 5-star reviews (10/14), several overly generic positive reviews lacking detail, and some reviews with repetitive phrasing about 'perfect fit' and 'easy installation.' The presence of verified purchases (V) and unverified (U) reviews adds credibility, and the negative reviews appear authentic with specific complaints about sizing and construction quality. The overall pattern suggests some potential review manipulation but not widespread fakery.

Review Statistics

201
Total Reviews on Amazon
-0.61
Rating Difference

Price Analysis

Price analysis pending

Price insights will be available shortly.

Understanding This Analysis

What does Grade C mean?

This product has moderate review authenticity concerns. A notable portion of reviews show suspicious patterns. Consider reading reviews carefully before purchasing.

Adjusted Rating Explained

The adjusted rating (3.70 stars) represents what we estimate this product's rating would be if fake reviews were removed. This product's adjusted rating is lower than Amazon's displayed rating (4.31 stars), suggesting positive fake reviews may be inflating the score.

How We Detect Fake Reviews

Our AI analyzes multiple factors: language patterns (generic vs. specific), reviewer behavior (history, timing), temporal anomalies (review clusters), verification status, sentiment authenticity, and statistical outliers. No single factor determines a review is fake - we look at the combination of signals.

Important Limitations

No automated system is perfect. Sophisticated fake reviews can evade detection, and some genuine reviews may be incorrectly flagged. Use this analysis as one data point in your purchasing decision, not the only factor. Reading actual review content yourself is always valuable.

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