Is the Filterbuy 20x20x1 Air Filter really on sale?
Yes. At our last check it was at the lowest price we've logged (7 readings) and Amazon showed it 10% below its typical price.
We have logged 7 price readings for this product since Oct 11, 2026. The lowest was on Oct 25, 8:37 AM ET; the price has swung 10% between our high and low. Our call right now: Buy now (At our lowest logged price (7 readings), 10% below Amazon typical price).
Filterbuy 20x20x1 Air Filter price history
| Checked | vs. our low | Amazon-shown discount |
|---|---|---|
| Oct 25, 8:37 AM ET | at low | 10% |
| Oct 24, 9:06 AM ET | at low | 10% |
| Oct 22, 8:33 AM ET | at low | — |
| Oct 20, 8:59 AM ET | at low | — |
| Oct 17, 9:16 AM ET | at low | — |
| Oct 11, 3:25 PM ET | 11% above | — |
| Oct 11, 2:23 PM ET | 11% above | — |
What buyers say
- + Customers find these air filters to be of great quality, working well and fitting…
- − However, several customers report that the filters are smaller than advertised.
From Amazon's AI-generated “Customers say” summary.
Check it now
10%
below Amazon typical price
at our tracked low · 7 readings since Oct 11
Today: 3% below our 6-day average (7 readings)
Filterbuy 20x20x1 Air Filter MERV 8 Dust & Allergy
★ 4.7 · 160,346 reviews
#1 pickBuy now✔ Real deal
✓ Checked live Oct 25, 8:37 AM ET
- + Customers find these air filters to be of great quality, working well and fitting…
- − However, several customers report that the filters are smaller than advertised.
Why we called it · what buyers say
Buy now: At our lowest logged price (7 readings), 10% below Amazon typical price. Rule
✔ Real deal at our tracked low · 10% below Amazon typical price Why
Last check Oct 25, 8:37 AM ET: at the lowest we've seen. Tracked since Oct 11 (14 days, 7 readings).
What buyers say (Amazon's AI-generated “Customers say” summary; the +/− lines above are excerpts from it): Customers find these air filters to be of great quality, working well and fitting perfectly in their HVAC systems. They are easy to install and remove, and effectively clean the air, with one customer noting they catch most allergens. However, several customers report that the filters are smaller than advertised. Source
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Buy now: At our lowest logged price (7 readings), 18% below Amazon list price. Rule
✔ Real deal at our tracked low · 18% below Amazon list price Why
Last check Oct 25, 8:37 AM ET: at the lowest we've seen. Tracked since Oct 11 (14 days, 7 readings).
What buyers say (Amazon's AI-generated “Customers say” summary; the +/− lines above are excerpts from it): Customers find that the water filter works well in their refrigerators. The taste receives mixed reviews, with some customers saying the water tastes very good while others report that it tastes terrible. Source
🔔 Notify me when it drops
10%
below Amazon list price
at our tracked low · 5 readings since Oct 11
Today: 3% below our 5-day average (5 readings)
Simply 16x25x1 Air Filter
★ 4.7 · 55,160 reviews
Buy now✔ Real deal
✓ Checked live Oct 25, 8:37 AM ET
- + Customers find these air filters to be of good quality, effective at filtering dust…
- − They work well and last up to 6 months, though opinions about size and fit are mixed…
Why we called it · what buyers say
Buy now: At our lowest logged price (5 readings), 10% below Amazon list price. Rule
✔ Real deal at our tracked low · 10% below Amazon list price Why
Last check Oct 25, 8:37 AM ET: at the lowest we've seen. Tracked since Oct 11 (14 days, 5 readings).
What buyers say (Amazon's AI-generated “Customers say” summary; the +/− lines above are excerpts from it): Customers find these air filters to be of good quality, effective at filtering dust and allergens without choking airflow, and consider them good value for money. They work well and last up to 6 months, though opinions about size and fit are mixed - while some say they're the right size and fit perfectly, others report they're smaller than expected and don't align properly. The purchase experience receives mixed feedback, with some customers saying they'll buy again while others express dissatisfaction. Source
🔔 Notify me when it drops
Top rated
on Amazon
at our tracked low · 25 readings since Oct 14
Today: at our 8-day average (25 readings)
Brita Standard Pitcher and Dispenser Replacement Water Filters
★ 4.8 · 227,868 reviews
Most reviewed hereFair price
✓ Checked live Oct 25, 12:21 PM ET
- + Customers find the water filter to be of excellent quality, easy to insert and…
- − Regarding durability and water quality, opinions are mixed - while some say it lasts…
Why we called it · what buyers say
Fair price: Within 0% of our tracked low; no notable discount (25 readings). Rule
Last check Oct 25, 12:21 PM ET: at the lowest we've seen. Tracked since Oct 14 (12 days, 25 readings).
What buyers say (Amazon's AI-generated “Customers say” summary; the +/− lines above are excerpts from it): Customers find the water filter to be of excellent quality, easy to insert and remove, and effective at filtering water, with one customer noting it removes most chemicals. The taste receives positive feedback, with one mentioning there's no chlorine taste, and customers consider it a good buy. Regarding durability and water quality, opinions are mixed - while some say it lasts a long time, others report it doesn't last long, and while some say the water quality is improved, others mention it coming out black. The fit is also mixed, with some saying it fits their pitcher while others disagree. Source
🔔 Notify me when it drops
We don't show dollar prices; tap through for today's price on Amazon. How the Real deal label works · All price histories