Pressure Washer Pump 101

It's easy to forget, as you compare different pressure washer models, that the quality of your pump is just as important as the quality of your engine!

Because the pump is responsible for adding the pressure to the water, which provides you with the cleaning power, it's important that you choose a pressure washer with a reliable and powerful pump.

Here are the two main types of pumps best suited for DIYers/homeowners, and then I will give you my recommendation:

The most popular pump is the AXIAL CAM water pump. There are no-name axial cam pumps AND brand name axial cam pumps available on pressure washers. Generally, the brand name axial cam pumps are much more reliable and powerful.

MY TIP: Here's something the manufacturers don't tell you: many of those incredibly cheap pressure washers that offer no-name pumps are designed for a running life of only 60-100 hours! It's true.

Those pressure washers are commonly called "one season wonders" - and you'll be lucky to get one season out of them. I just wanted to warn you about no-name pumps.

The other, more heavy-duty pump is the TRIPLEX water pump. These are most commonly seen on the higher quality pressure washers that can be used by commercial contractors or homeowners. Triplex pumps have a longer life expectancy and are more efficient than axial cam pumps, but they are generally put onto pressure washers that are significantly more expensive and heavy.

Never buy a pressure washer with a no-name or generic axial cam pump. Why? No-name pumps just aren't as good! Insist on buying a brand name pump that's earned its reputation for reliability and long life.

If the pressure washer box, salesperson or website description doesn't offer any specific information about the brand of the pump, I would steer clear.

If you'd like clear instructions & advice on how to remove your old pressure washer pump, and easily install a new one, read the Pressure Washer Pump Replacement page.

If you need a replacement pump, I found a very good Comet pump, for 5 to 6.5 HP pressure washers for only $149.00, at Northern Tool + Equipment . I recommend Comet pumps because I've been using them for 5+ years & I'm pleased with their power and low maintenance.

Northern Tool + Equipment has a great selection of pumps and pressure washers: Comet Pump Pressure Washer Pump — 2.5 GPM, 2700 PSI, 5 HP to 6.5 HP Required, Model# VRX2527G

If you'd like to learn more about pressure washer engines and how to choose the type that's right for you, read Choosing a Pressure Washer Engine.

And don't forget: if you're in the market for a new or reconditioned pressure washer or pump, great deals can be had at ! Click on the link below to see the current & live auctions at :

Replacing and Repairing Pressure Washer Pumps

My Handy List of Brand Name Pump Manufacturers

Need to Find a Local Repair & Service Center for Your Pump?

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