Price History for PlasmaPro 400S-P (Coverage 356 sq.ft.) Activated Carbon Original Filter Large Room Air Purifier in White
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PlasmaPro 400S-P (Coverage 356 sq.ft.) Activated Carbon Original Filter Large Room Air Purifier in White
Purify up to 1,755 sq ft once per hour and filter at least 99.97% of airborne particles down to 0.3 microns with 3-stage filtration. View the amount of airborne particles detected by the laser dust sensor on th
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Oct 26, 2026 | $239.99 |
| Oct 18, 2026 | $289.99 |
| Aug 31, 2026 | $239.99 |
| Aug 17, 2026 | $289.99 |
| Aug 9, 2026 | $259.99 |
| Jun 14, 2026 | $289.99 |
| Mar 18, 2026 | $273.90 |
| Feb 24, 2026 | $272.93 |
| Dec 14, 2025 | $273.90 |
| Dec 8, 2025 | $273.90 |
| Nov 11, 2025 | $273.90 |
| Nov 8, 2025 | $273.90 |
12 recorded prices; last found in Home Depot’s data on Nov 4, 2026. How we track prices
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Analysis
PlasmaPro 400S-P (Coverage 356 sq.ft.) Activated Carbon Original Filter Large Room Air Purifier in White price analysis
Price analysis for PlasmaPro 400S-P (Coverage 356 sq.ft.) Activated Carbon Original Filter Large Room Air Purifier in White at Home Depot: today's price of $239.99 is the lowest price we've recorded for this listing.
- The current price of $239.99 is 12% (or $33.91) below the MSRP of $273.90.
- Today's price is 6% below its average daily price over the last 90 days ($255.10).
- The lowest recorded price on PriceWatchPro was $239.99 on August 31, 2026. The current listing is at this all-time low.
- The highest recorded price on PriceWatchPro was $289.99 on June 14, 2026. Today's price is $50.00 below that peak.
- 30-day trend: trending down 17.2% from $289.99 to $239.99.
- Across 11 tracked price changes, the listing has dropped 4 times with an average drop of $32.74.
- PriceWatchPro has been tracking this listing since November 8, 2025 (361 days of price history).
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Compare PlasmaPro 400S-P (Coverage 356 sq.ft.) Activated Carbon Original Filter Large Room Air Purifier in White prices across retailers
Same item (UPC 810043374033), also tracked at:
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