Is it worth rebuilding a pressure washer pump?

Author: Lennie Hammes  |  Last update: Thursday, April 2, 2026

If the replacement parts are expensive, it may make more sense to buy a new pump instead. However, if you have a high-quality pump that is used in an industrial setting, rebuilding it can be a cost-effective and efficient solution.

How much does it cost to rebuild a pressure washer pump?

Pump Repairs: Seals, Valves, and Unloader Valves

A complete pump replacement is even more costly, often ranging between $200 to $500. In some cases, you may find that the age of your pressure washer warrants upgrading to a new one rather than repairing the pump. We'll talk more about this shortly.

What is the life expectancy of a pressure washer pump?

On some pumps, the pistons are driven by a plate on an angle (wobble plate), and in other cases, the pistons are driven by a crankshaft. Crankshaft-driven pumps are generally built better and will last longer. Low-cost pressure washers have pumps with very low life expectancies—some as low as 60 – 100 hours.

Is it worth replacing the water pump on a pressure washer?

Have you gotten many years and hours of use from the pump? If so, it may be time to replace it. However, if it is a newer pump, repair might be best. A good rule of thumb is if the repair costs more than 50% the value of a replacement pump, it is likely time to replace it.

How can you tell if your pressure washer pump is bad?

Definitive Pump Testing
  • Attach a pressure gauge to the outlet of the pump to measure the pressure directly.
  • Start the pressure washer and observe the gauge.
  • If the pressure spikes and then drops to a trickle, it confirms an internal pump issue.

pressure washer pumps, the difference

Can a pressure washer pump be repaired?

If the damage is minor, rebuilding the pump can be a great option to get it back up and running again. Secondly, the age of the pump is also an important factor to consider. If the pump is relatively new, it may be worth investing in replacement parts rather than buying a new pump altogether.

How much does it cost to replace a washer pump?

Auto Windscreen washer pump: how much does this product cost? The price of car parts within the auto Windscreen washer pump category ranges from £2 to £109, depending on the vehicle type, manufacturer, and product specifications.

What causes the pump to go bad on a pressure washer?

A pump head needs smooth internal surfaces to seal properly. If you have head wash out or metal wear, it's typically not good. Also, scoring or lines internally on the brass head is an issue that will not re-seal.

How do I know if my washer needs a new pump?

Firstly, just to check you are on the right path, here are the warning signs that your drain pump is broken:
  1. You can't hear the pump when it's draining the water out.
  2. You can hear a low humming sound when on spin cycle but the water doesn't drain.
  3. The washing machine fills up with water as normal.

How long should a pressure pump last?

The lifetime of a water pump depends on type and model. On average, you should expect +10 years. You should also be aware of other parameters such as level of comfort provided by the pump, how sustainable, reliable and safe it is - and not least if it will enable you to save energy, water and money during the lifetime.

What is the most reliable pressure washer pump?

Triplex plunger pumps are the highest quality pressure washer pumps, offering longer life and better performance.

When should I replace my pressure washer pump?

How to determine if your pressure washer pump is faulty
  1. Water leak. If water leaks from a crack in the pump itself, the entire pump must be replaced. ...
  2. Oil leak. If oil leaks from your pressure washer pump, one of the seals, gaskets or pistons may be damaged. ...
  3. Inconsistent pressure. ...
  4. Low pressure. ...
  5. Loud noises.

Is it OK to leave a pressure washer running?

And never leave your pressure washer unattended while running. If you have to walk away for more than a minute, turn the pressure washer off. It's not good for your pump to leave it running while not in use, and shutting it off can prevent unwanted accidents.

What is the most common cause of a pressure washer going faulty?

The number one cause of low or no pressure when using a pressure washer is a blocked or worn nozzle. Blocked nozzles will prevent water from escaping, while a worn nozzle will allow too much water to pass through, causing the pressure to drop.

How long does a pump last on a pressure washer?

Axial cam pumps are a step above wobble pumps. They generally last around 500 to 800 hours and are used in pressure washers under 3,500 PSI. Axial cam pumps are efficient and lightweight. However, they have a tendency to overheat when used for long periods of time.

Can a water pump be rebuilt?

Rebuilt/Remanufactured Water Pumps

They are often (but not always) cheaper in terms of price of the part. Some shops are equipped to do most of the rebuild themselves rather than paying for a rebuilt unit off the shelf.

How do I know if my washer pump is bad?

Disruptive noises: When your washing machine makes loud, thumping sounds during the drainage phase, it might indicate that the pump has a clog or can't effectively empty the water. No washer movement: Washing machines spin and jerk quickly to loosen dirt on fabrics.

How much to replace a pump on a washer?

Replacing your washing machine pump is expensive and will cost at least $300 for parts and labor. Lid Switch. This is a relatively simple repair. On average, washing machine repair services charge $120 to supply and replace a lid switch.

How to check if a pump is bad?

Common symptoms and what may be causing them
  1. Abnormal flow. If the flow is abnormal, this is a definite sign of a problem. ...
  2. Noisy pumps. The most common noise is that of that of rocks in a can. ...
  3. Frequent clogging. ...
  4. Overheating. ...
  5. Air Leaks.

How much to rebuild a pressure washer pump?

Pressure Washer Pump Repair Cost

Depending on the size of your commercial-grade pump, a full replacement can often cost up to $1,000+. If you can get by with just a repair, expect your cost to be closer to $150 to $300.

Why is my pressure washer running but not pumping?

If the washer is running smoothly but there's no pressure or water coming from the pump, it could be a clogged wand, hose or inlet filter. If there's a chattering noise, that means air is leaking in the inlet fitting or suction hose.

Is replacing a water pump easy?

Replacing a car water pump could be a simple or difficult job, depending on the vehicle and the water pump's location. It's a job usually best left for professional mechanics. The water pump may be hidden under other components and may require special tools depending on the vehicle's design.

Do you need a pump for a pressure washer?

Since most pressure washers have a built-in pump, or if you will use a gas pressure washer, a pump between your water tank and pressure washer won't be necessary since it already has a motor strong enough and inlet hoses and valves to draw the water from the tank and feed to the pressure washer.

Is it worth fixing a 7 year old washing machine?

Factors to Consider

If you spent $650 on your washer seven years ago and you're doing seven loads per week (a lot of wear and tear), a new washer purchase makes sense. But if the machine is 3 years old and you spent $1,000 for it, a repair may be the better financial choice.

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