Who makes Filter King? Amazon sales, products and sellers
Updated November 2026 with September 2026 data
At a glance
- Size
- Large
- $2.0M est./mo
- Trend
- Stable
- -3%, last 2 vs prior 2 months
- Ratings
- Strong
- 4.6 ★ · 29,574 reviews
- Who sells it
- Mostly one seller
- Top seller has 100% of units
Filter King estimated monthly revenue on Amazon
Our read on Filter King
Filter King is a large brand in HVAC Filtration, ranking 3 among 154 brands in the category and holding an 8% share of estimated category revenue. In September 2026 it had estimated revenue of $2.0M on 34,000 units, down 9% from $2.2M in June 2026, the first of 4 months of data. Over the latest 2 months the trend is stable, with a change of -3%. The brand has 1,044 products selling, and its top three, all MERV 8 air filters, sell an estimated 910, 660 and 480 units per month. Its average rating is 4.6 across 29,574 reviews. One seller, Filter King LLC, accounts for 100% of units.
Top Filter King products on Amazon
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| Product | Rating | Est. units/mo | Amazon link |
|---|---|---|---|
| Filter King 24x24x1 Air Filter MERV 8 | 4.6 ★2,432 reviews | 910 | Check price on Amazon |
| Filter King 21x21x1 Air Filter MERV 8 | 4.7 ★33 reviews | 660 | Check price on Amazon |
| Filter King 20x25x2 Air Filter MERV 8 | 4.6 ★689 reviews | 480 | Check price on Amazon |
| Filter King 20x25x1 Air Filter MERV 13 | 4.5 ★167 reviews | 470 | Check price on Amazon |
| Filter King 20x20x2 Air Filter MERV 8 | 4.6 ★3,584 reviews | 440 | Check price on Amazon |
| Filter King 24x30x1 Air Filter MERV 8 | 4.6 ★3,588 reviews | 420 | Check price on Amazon |
| Filter King 15.5x19.5x1 Air Filter MERV 8 | 4.6 ★4,663 reviews | 410 | Check price on Amazon |
| Filter King 11.5x23.5x1 Air Filter MERV 8 | 4.6 ★871 reviews | 310 | Check price on Amazon |
| Filter King 18x30x1 Air Filter MERV 8 | 4.6 ★3,587 reviews | 280 | Check price on Amazon |
| Filter King 8x24x1 Air Filter MERV 8 | 4.6 ★872 reviews | 270 | Check price on Amazon |
Who sells Filter King
- Filter King LLC100%
Share of estimated units sold in September 2026, by the seller holding the Buy Box.
Place in its category
#3 of 154
Rank 3 of 154 brands in HVAC Filtration by estimated revenue in September 2026, with 8% of the category.
Frequently asked questions
Who makes Filter King?
Filter King is the brand name on 1,044 products we tracked on Amazon in September 2026 mostly in HVAC Filtration (Tools & Home Improvement). The largest seller of Filter King products that month was Filter King LLC, with 100% of estimated units. Amazon listings don't show the brand owner's legal name, so the brand's own website is the place to confirm its parent company.
How much does Filter King sell on Amazon?
Filter King sold an estimated $2.0M on Amazon in September 2026, about 34,000 units. That is -9% compared with June 2026. These are Ecominsights estimates, not figures reported by the brand.
What are Filter King's best-selling products on Amazon?
By estimated units sold in September 2026: 1. Filter King 24x24x1 Air Filter MERV 8 (about 910 units); 2. Filter King 21x21x1 Air Filter MERV 8 (about 660 units); 3. Filter King 20x25x2 Air Filter MERV 8 (about 480 units).