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Generac 7901 vs Simpson MSH3125-S - The Differences

Further down the page, you'll find some explanations regarding the key similarities and differences between the Simpson MSH3125-S and the Generac 7901.

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 MSH3125-SGenerac 7901
Simpson MSH3125-SGenerac 7901
  • Higher GPM
  • Higher Cleaning Units
  • Lighter
  • More nozzles
  • Onboard soap tank
  • PowerDial gun
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Since the Generac 7901 and the Simpson MSH3125-S are manufactured by different companies, there may be variations in their overall build and the technology they employ.

Power Comparison

  • Fuel: Both units are gas-powered pressure washers, offering high pressure for effective cleaning and continuous operation without the need for recharging or plugging in.
  • Engine & Pump: The Simpson MSH3125-S and the Generac 7901 both feature axial-type pumps, known for their lightweight construction and simplicity. The pump of the former is crafted by Annovi Reverberi. The Simpson MSH3125-S's pump is powered by a 187cc engine, while the Generac 7901 utilizes a 196cc engine. It's noteworthy that the engine powering the Simpson MSH3125-S is crafted by Honda, renowned for its exceptional performance, setting it apart from its counterpart. 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 MSH3125-S compare to the Generac 7901.

  • Pressure: With very similar maximum reachable pressures (3200 PSI for the Simpson MSH3125-S and 3100 PSI for the Generac 7901), both devices should effectively lift and blast away dirt with equal efficiency.
  • Water Flow: At low pressure, the Simpson MSH3125-S can produce a slightly higher volume of water than that of the Generac 7901. With a capacity of up to 2.5 GPM (gallons per minute) compared to the Generac 7901's maximum flow of 2.4 GPM, it should enable you to rinse away dirt and debris with somewhat greater effectiveness.
  • Cleaning Power: With its 8000 C.U., the Simpson MSH3125-S boasts a slightly higher overall cleaning efficiency than the Generac 7901 with its 7440 C.U.

Design Comparison

  • Design: One of the key differences between them lies in their design and orientation: the Generac 7901 features a vertical stance reminiscent of a hand truck, prioritizing mobility and maneuverability, while the Simpson MSH3125-S adopts a horizontal stance resembling a wheelbarrow, ideal for working on uneven terrain.
  • Design: One of the key differences between them lies in their design and orientation: the Generac 7901 features a vertical stance reminiscent of a hand truck, prioritizing mobility and maneuverability, while the Simpson MSH3125-S adopts a horizontal stance resembling a wheelbarrow, ideal for working on uneven terrain.
  • Weight: With an approximate weight of 55 lbs, the MSH3125-S is slightly less heavy. It should therefore be easier to transport and handle compared to the 7901, which weighs around 57 lbs.
  • Maneuverability: Both products benefit from a set of wheels, which greatly contributes to their maneuverability. The Simpson MSH3125-S has a standard handle and the Generac 7901 a rubber-padded handle, both of which aid in maneuvering.

Feature Comparison

  • Soap Addition: Both washers allow for the addition of chemical detergent solutions to the water. For the Generac 7901, this is achieved via an onboard detergent tank, whereas the Simpson MSH3125-S uses a siphon hose.
  • Trigger Gun & Wand: The 2 units do not come with the same type of trigger gun. The Simpson MSH3125-S uses a fairly standard ergonomic gun, while the Generac 7901 comes with a PowerDial gun. However, they both have a similar, classic-type wand.
  • Nozzles: Both pressure washers come with 0°, 25°, 40°, and soap nozzles, but the nozzle similarities stop here. The Simpson MSH3125-S also has a 15° nozzle.
  • Reach: Both products include a 25 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 MSH3125-S and 7901 both offer onboard storage that allows you to neatly keep the nozzles and 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 MSH3125-SGenerac 7901
Simpson MSH3125-SGenerac 7901
  • Higher GPM
  • Higher Cleaning Units
  • Lighter
  • More nozzles
  • Onboard soap tank
  • PowerDial gun
Show all offers
Show all offers
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