Who makes SIMPSON? Amazon sales, products and sellers
Updated November 2026 with September 2026 data
At a glance
- Size
- Large
- $1.7M est./mo
- Trend
- Declining
- -31%, last 2 vs prior 2 months
- Ratings
- Strong
- 4.5 ★ · 24,214 reviews
- Who sells it
- Mostly one seller
- Top seller has 82% of units
SIMPSON estimated monthly revenue on Amazon
Our read on SIMPSON
SIMPSON ranks 3 of 177 brands in Pressure Washers, within Patio, Lawn & Garden, with an 8% share of estimated category revenue. Estimated revenue was $1.7M in September 2026, down from $3.0M in June 2026, a change of -43% across 4 months of data. The trend is labeled Declining, at -31% over the last 2 months. Estimated units in the latest month were 7,100 across 51 products. The top product is a 4500 PSI quick connect nozzle at 860 units per month, followed by the Clean Machine 3400 PSI gas pressure washer at 600. Sales are concentrated: Amazon holds 82% of units, and 12 sellers are active in total. The average rating is 4.5 across 24,214 reviews, which falls in the Strong band.
Top SIMPSON products on Amazon
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| Product | Rating | Est. units/mo | Amazon link |
|---|---|---|---|
| Simpson 4500 PSI 1/4" Quick Connect Turbo Pressure Washer Nozzle | 4.6 ★892 reviews | 860 | Check price on Amazon |
| Simpson Clean Machine 3400 PSI Gas Pressure Washer | 4.3 ★2,033 reviews | 600 | Check price on Amazon |
| Simpson Cleaning 40224 Morflex Series 3300 PSI Pressure Washer Hose | 4.7 ★1,388 reviews | 460 | Check price on Amazon |
| OEM Technologies 3300 PSI 2.4 GPM Horizontal Pressure Washer Pump Kit | 4.6 ★1,628 reviews | 450 | Check price on Amazon |
| Simpson 50ft, 5/16" 3700 PSI MorFlex Cold Water Pressure Washer Hose | 4.7 ★2,126 reviews | 360 | Check price on Amazon |
| Simpson 4500 PSI 31" Pressure Washer Wand | 4.7 ★714 reviews | 350 | Check price on Amazon |
| Simpson PowerShot 4400 PSI Gas Pressure Washer | 3.7 ★632 reviews | 340 | Check price on Amazon |
| Simpson PowerShot 3500 PSI Gas Pressure Washer | 4.6 ★198 reviews | 330 | Check price on Amazon |
| OEM Technologies 3400 PSI 2.5 GPM Horizontal Pressure Washer Pump Kit | 4.4 ★1,639 reviews | 320 | Check price on Amazon |
| Simpson Cleaning 80143 3600 PSI Universal Turbo Pressure Washer Nozzle | 4.6 ★1,549 reviews | 270 | Check price on Amazon |
Who sells SIMPSON
- Amazon82%
- Ashnicol Essentials12%
- Holley Performance Product2%
- Trends Auto1%
- BrandNewEngines, Inc1%
Share of estimated units sold in September 2026, by the seller holding the Buy Box.
Place in its category
#3 of 177
Rank 3 of 177 brands in Pressure Washers by estimated revenue in September 2026, with 8% of the category.
Frequently asked questions
Who makes SIMPSON?
SIMPSON is the brand name on 51 products we tracked on Amazon in September 2026 mostly in Pressure Washers (Patio, Lawn & Garden). The largest seller of SIMPSON products that month was Amazon, with 82% 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 SIMPSON sell on Amazon?
SIMPSON sold an estimated $1.7M on Amazon in September 2026, about 7,100 units. That is -43% compared with June 2026. These are Ecominsights estimates, not figures reported by the brand.
What are SIMPSON's best-selling products on Amazon?
By estimated units sold in September 2026: 1. Simpson 4500 PSI 1/4" Quick Connect Turbo Pressure Washer Nozzle (about 860 units); 2. Simpson Clean Machine 3400 PSI Gas Pressure Washer (about 600 units); 3. Simpson Cleaning 40224 Morflex Series 3300 PSI Pressure Washer Hose (about 460 units).