Filterbuy 20x25x1 Air Filter MERV 11 Superior Pet & Allergy...
Good for: Buyers willing to read the details before deciding
Watch out for: suspicious-timing
Last analyzed: February 2026
Total Reviews
23,140
On Amazon
Verified
100%
Good
Amazon Rating
4.6
Original rating
Savinoo Rating
3.0
Adjusted rating
Our Recommendation
BE CAUTIOUS - Read individual reviews carefully, especially 1-star and 3-star reviews, before purchasing.
Analysis Summary
- MEDIUM RISK (Score: 52/100) Filterbuy 20x25x1 Air Filter MERV 11 Superior Pet & Allergy... has some concerning review patterns. Major Issues Found: 82% of reviews are either 5-star or 1-star, with only 18% in between.
- Real products usually have more balanced ratings. Additional Concerns: Review dates show suspicious clustering patterns, which may indicate coordinated fake reviews. Positive Indicators: 100% of reviews are from verified purchases, which is good..
Customer Reviews from Amazon
Most Helpful Review
"Good filters for the money. I wish Amazon was more careful in packaging. Two of the four filters arrived slightly crushed. Still useable and work well."
Anonymous
As described
ellen lambert
Works well. Arrived on time. Would but again
randall j schiera
18x18 is a weird size. We have cats & these filters really helped knock down…
18x18 is a weird size. We have cats & these filters really helped knock down the allergens floating around our apartment.dominic bia
perfect fit
clifford poll
Good price and delivery was earlier than expected. So far everything is working very well.
guy gadbois
Love FilterBuy filters I’ve been using the exclusively for several years. The filters are well…
Love FilterBuy filters I’ve been using the exclusively for several years. The filters are well made, none of the flimsy ones that you have a cram in the filter box. They look as good coming out of the after service as they did going in. Available in all sizes and MERV,What Customers Talk About
Commonly Praised
Commonly Complained
Review Quality Analysis
Review quality helps identify authentic customer feedback. Longer, detailed reviews (50+ words) typically indicate genuine experiences, while high percentages of short reviews (under 20 words) may suggest incentivized or fake feedback.
Average Words
34
Moderate detail
Long Reviews
4%
⚠ Low detail
Short Reviews
22%
✓ Low brief reviews
Review Length Distribution
Authentic vs Brief Reviews
Average Word Count Gauge
Benchmark: 30 words = moderate, 50+ words = detailed & authentic
34
avg. words per review
Interpretation: Review quality appears within normal range for this product category.
Review Velocity
Review velocity tracks how quickly reviews are posted. Steady, gradual accumulation is natural, while sudden spikes or bursts (20+ reviews in a single day) may indicate incentivized campaigns or coordinated activity.
Average Per Day
0.15
Natural pace
Max in One Day
3
Normal range
Variable Velocity Pattern
Review posting rate varies over time. This may be linked to promotions, product launches, or seasonal events.
Unusual Review Bursts Detected
Multiple instances of high review volumes were found within short timeframes. This pattern may be linked to promotional campaigns or coordinated activity.
Rating Breakdown
This chart shows how customers rated Filterbuy 20x25x1 Air Filter MERV 11 Superior Pet & Allergy.... Products with authentic reviews typically show a bell curve with most ratings in the 3–4 star range. A heavily polarized distribution — many 5★ and 1★ with few middle ratings — can be worth investigating further.
Key Findings
82% of reviews are either 5-star or 1-star, with only 18% in between. Real products usually have more balanced ratings.
Review dates show suspicious clustering patterns, which may indicate coordinated fake reviews.
Warning Flags
suspicious-timing
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Our analysis is based on 23,140 reviews.
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How does this compare?
This product scores 52/100 — below average. Review the findings carefully before buying.
Check on Amazon