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Simpson ALH4240 vs PS4240 - The Differences

Further down the page, you'll find some explanations regarding the key similarities and differences between the Simpson PS4240 and the Simpson ALH4240.

But before checking out explanations regarding their power, design, and features here's a table that summarizes the main pros of each of these 2 pressure washers:

Simpson PS4240Simpson ALH4240
Simpson PS4240Simpson ALH4240
  • AAA pump
  • CAT pump
  • Aluminum frame
  • Lighter
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As the PS4240 and the ALH4240 are both Simpson pressure washers, they benefit from the same level of quality and attention to detail.

Power Comparison

  • Fuel: Both units are gas-powered pressure washers.
  • Engine & Pump: The Simpson PS4240 and the Simpson ALH4240 both use a triplex plunger pump to put water under pressure. These 2 pumps are manufactured by AAA and CAT, respectively. In either case, the pump is powered by a 389 cc engine. It is worth noting that both engines are manufactured by Honda. Both devices use a conventional pull-start mechanism to operate.

The following charts are provided to show you at a glance how the main specs of the Simpson PS4240 compare to the Simpson ALH4240.

  • Pressure: As the Simpson PS4240 and the Simpson ALH4240 share the same maximum attainable pressure of 4200 PSI, they should both allow you to blast off dirt with the same force.
  • Water Flow: These 2 units offer the same maximum water flow. Each of them should be able to deliver a maximum of 4 GPM (gallons per minute) and to offer the same rinsing power.
  • Cleaning Power: Sharing an identical Cleaning Power of 16800 Cleaning Units (PSI x GPM), both devices offer the same overall cleaning efficiency.

Design Comparison

  • Design: Both units are constructed with a wheelbarrow design. Therefore, if either of these 2 devices should provide better mobility, it would be due to its wheels and weight (which we detail just below). It is worth noting that the Simpson ALH4240 has an aluminum frame, which means that it will not rust.
  • Weight: With an approximate weight of 133 lbs, the ALH4240 is slightly less heavy than the PS4240 (which weighs around 136 lbs).
  • Maneuverability: Both products benefit from a set of wheels, which greatly contributes to their maneuverability. Both offer a handle, which improves your grip when you wish to move them.

Feature Comparison

  • Soap Addition: Both washers allow for the addition of chemical detergent solutions to the water. In both cases, this is done via a siphon hose.
  • Trigger Gun & Wand: Each of these 2 units comes with a fairly standard ergonomic trigger gun and a classic wand.
  • Nozzles: Out of the box, the ALH4240 and the PS4240 both come with a 5-nozzle package. The set of included nozzles is the same in either case: 0°, 15°, 25°, 40°, and a soap nozzle.
  • Reach: Both products include a 50 ft high-pressure hose. Therefore, neither of them will, out of the box, allow for a higher freedom of movement around the unit.
  • Storage: The PS4240 and ALH4240 both offer onboard storage that allows you to neatly keep the accessories you need at hand. Both washers feature a set of hooks to help you neatly store their high pressure hoses when not in use.

TL;DR

Simpson PS4240Simpson ALH4240
Simpson PS4240Simpson ALH4240
  • AAA pump
  • CAT pump
  • Aluminum frame
  • Lighter
Show all offers
Show all offers
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