AAA 90039
Score: 92/100
Hourleey Pressure Washer Pump
Score: 72/100Rankings
The AAA 90039 is a professional-grade horizontal triplex plunger replacement pump delivering 4000 PSI and 3.5 GPM. It features durable components like forged brass heads and ceramic pistons, making it ideal for heavy-duty industrial tasks. However, it strictly requires an 11 HP engine and is not suitable for underpowered units.
The Hourleey Pressure Washer Pump is a budget-oriented horizontal triplex plunger pump with specifications of 3700 PSI and 2.5 GPM. It offers high cleaning power for the price, making it a viable replacement for DIYers, though it lacks the verified reliability and warranty of premium brands. It is best suited for intermittent tasks like driveway cleaning where cost is a primary factor.
| Attribute | | |
|---|---|---|
4,000 PSIbest | 3,700 PSI | |
3.5 GPMbest | 2.5 GPM | |
1 inchesbest | 0.75 inches | |
0.75 inchesbest | 0.75 inchesbest | |
0.375 inchesbest | 0.375 inchesbest | |
11 quartsbest | — | |
| ↓ lower better | 14 lbs | 13.3 lbsbest |
— | 104 °Fbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(3) | ||
Maximum Pressure (PSI) | 4000 PSI | 3700 PSI |
Flow Rate (GPM) | 3.5 GPM | 2.5 GPM |
Pump Type | Horizontal Triplex Plunger | Triplex |
Compatibility & Mounting(2) | ||
Shaft Diameter (inches) | 1.0 inches | 0.75 inches |
Shaft Type | Hollow | Horizontal |
Physical(1) | ||
Product Weight (lbs) | 14.0 lbs | 13.3 lbs |
Features & Control(1) | ||
Unloader Type | Adjustable Hand Turn Knob | Adjustable |
Safety & Features(1) | ||
Max Water Temperature (°F) | N/A °F | 104 °F |
Products in the top-left offer the best value (high score, low price).
Professional reviewers from sources like Simpson Cleaning and Ferguson praise the AAA 90039 for its engineered efficiency and durability, highlighting its PowerBoost technology and dual bearings as key advantages for tough environments.
Everyday users generally view the pump as a cost-effective replacement that extends the life of existing pressure washers. Common praise focuses on its reliability for heavy-duty cleaning and ease of installation.
“Punches above its weight for the spec-blasted years of grime off my deck”
Professional reviewers and editors have not covered the Hourleey pump due to its unverified status. However, industry standards for generic triplex pumps in this category suggest they score moderately for performance but are heavily critiqued for lacking branded warranties and long-term durability compared to OEM products like AR or General Pump.
Everyday users of similar unbranded pumps praise the high cleaning power for the price, noting it punches above its weight for deck and driveway cleaning. However, recurring complaints focus on premature seal leaks after short usage periods and installation difficulties due to shaft alignment issues and poor instructions.
