Price History for 21.5 in. x 23 in. x 4 in. MERV 11 (FPR 7) Allergen Defense Pleated HVAC AC Furnace Air Filters Replacement (3-Pack)
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21.5 in. x 23 in. x 4 in. MERV 11 (FPR 7) Allergen Defense Pleated HVAC AC Furnace Air Filters Replacement (3-Pack)
The Filterbuy replacement air filter 21.5x23x4 (actual size: 21.50 in. x 23.00 in. x 3.63 in.) ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to h
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Oct 18, 2026 | $93.99 |
| Jan 25, 2026 | $104.97 |
| Dec 14, 2025 | $98.55 |
| Dec 2, 2025 | $98.55 |
| Nov 16, 2025 | $98.55 |
5 recorded prices; last found in Home Depot’s data on Nov 4, 2026. How we track prices
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Analysis
21.5 in. x 23 in. x 4 in. MERV 11 (FPR 7) Allergen Defense Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) price analysis
Price analysis for 21.5 in. x 23 in. x 4 in. MERV 11 (FPR 7) Allergen Defense Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) at Home Depot: today's price of $93.99 is the lowest price we've recorded for this listing.
- The current price of $93.99 is 5% (or $4.56) below the MSRP of $98.55.
- Today's price is 9% below its average daily price over the last 90 days ($102.77).
- The lowest recorded price on PriceWatchPro was $93.99 on October 18, 2026. The current listing is at this all-time low.
- The highest recorded price on PriceWatchPro was $104.97 on January 25, 2026. Today's price is $10.98 below that peak.
- Across 4 tracked price changes, the listing has dropped once with an average drop of $10.98.
- PriceWatchPro has been tracking this listing since November 16, 2025 (353 days of price history).
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Compare 21.5 in. x 23 in. x 4 in. MERV 11 (FPR 7) Allergen Defense Pleated HVAC AC Furnace Air Filters Replacement (3-Pack) prices across retailers
Same item (UPC 717267296304), also tracked at:
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