Pressure Washer Flow Rate Explained: What GPM Means, How Much You Need & Why It Matters By Marcus Stone — Founder & Lead Editor, HomeGearMax Updated August 2026 · Technical Pressure Washer Guide Quick answer: Pressure washer flow rate is measured in GPM (gallons per minute) and tells you how much water the machine moves […]

Brass Pump vs Aluminum Pump: Which Pressure Washer Pump Is Better? By Marcus Stone — Founder & Lead Editor, HomeGearMax Updated August 2026 · Technical Guide Quick answer: A brass pump is usually the better choice when long service life, repairability, sustained heavy use, and resistance to demanding operating conditions matter more than purchase price. […]

HomeGearMax Technical Guide | Pressure Washer Pumps Axial Cam vs Triplex Pump: Which Pressure Washer Pump Is Better? Axial cam vs triplex pump is primarily a comparison of pump architecture, duty cycle and ownership economics—not simply maximum PSI. Axial cam pumps generally emphasize compactness, lower cost and residential portability, while many professional triplex plunger pumps […]

HomeGearMax Technical Guide Universal Motor vs Induction Motor: Differences, Efficiency, Noise & Lifespan Universal motors and induction motors are not simply two versions of the same motor. They use different electromagnetic architectures, which changes how they produce torque, how fast they run, how they respond to load, how heat is generated, what components wear, and […]

What Are Cleaning Units (CU)? The Definitive Engineering Guide Pressure washer marketing relies on a predictable retail tactic: displaying inflated Pounds per Square Inch (PSI) numbers on product packaging. Big-box home improvement retailers across the United States—from Home Depot and Lowe’s to Tractor Supply Co.—stock shelves with machines highlighting 3,000, 4,000, or 4,400 PSI. For […]

PSI vs GPM Explained: Cleaning Power Math & Buying Guide Quick Answer PSI (Pounds per Square Inch) measures stripping force to break bonds between debris and surface. GPM (Gallons per Minute) measures water flow volume to flush dislodged dirt away. For maximum cleaning speed, calculate total Cleaning Units (CU = PSI × GPM). Higher GPM […]

How to Clean a Concrete Driveway: The Technical Guide Learn how to clean a concrete driveway using professional chemical treatments, surface cleaner mechanics, and pressure washing physics. Direct Answer: How to Clean a Concrete Driveway Cleaning a concrete driveway effectively requires a chemical-mechanical sequence rather than raw water pressure alone: Pre-Treat Stains: Apply an alkaline […]

Pressure Washer Hose Guide: Size 1/4 vs 3/8, PSI, GPM & M22 Fittings What Size Pressure Washer Hose Do You Need? 1/4-inch ID: Practical starting point for lower-flow residential pressure washers (1.0 to 2.0 GPM). Provides minimal physical weight, high flexibility, and easy storage. 5/16-inch ID: Useful intermediate size for 2.1 to 3.0 GPM residential […]

Pressure Washer Nozzle Guide: Color Codes, Spray Angles, PSI, GPM & Orifice Size Chart Written By: HomeGearMax Technical Editorial Team | Technical Focus: Fluid Dynamics & Power Equipment Sizing Last Updated: August 2026 | Technical Basis: Manufacturer nozzle-sizing charts and standard hydraulic flow equations [Q = Cd × A × √(2ΔP / ρ)] Quick Answer: […]