The quality of the pressure washers for the past years has come a long way. One noticeable thing is that it has become more affordable. It can remove dirt, algae, and grime fast, effectively, and safely when it comes to cleaning. The machine can help maintain the cleanliness of your property.
To determine if you got a good or bad pressure washer, you need to consider several factors. One of them is understanding the ratings of pressure washers. Below are some of the basic ratings:
Horse Power (HP)
The engine’s or motor’s output power is shown here. The pump’s ability to generate pressure and volume is directly correlated to this rating.
Gallons Per Minute (GPM)
Gallons per minute (GPM) is the unit of measurement for the amount of water produced by a pressure washer. Cleansing force can be enhanced by volume.
Cleaning Power Units (CPU)
The cleaning power of a pressure washer is measured by Cleaning Power Units. Calculate the CPU by multiplying GPM by PSI. The machine’s ability to clean thoroughly and effectively increases in direct proportion to the CPU power.
Pounds Per Square Inch (PSI)
When using a pressure washer, the PSI (pounds per square inch) is the unit of measurement. Cleaning power is aided by pressure.
What You Need to Remember
Consumers often overlook the CPU because they are so focused on the PSI rating of the machine. Using an example, a pressure washer with a 2,800 PSI and 2 GPM output would have a CPU of 5,600 or 5,600 cores. At 2,400 PSI and 4 GPM, a second pressure washer can be used. 9,600 is the number of cores. More than 40% more cleaning power is found in the lower PSI machine in this example. An area can be cleaned 40 percent faster with a 2,400 PSI machine than with a 2,800 PSI machine.
Now, take a look at this: The typical garden hose has a flow rate of 6 GPM at a pressure of 10 PSI, equating to 60 CPU. There are standard spray nozzles that can produce about 5 GPM of water per minute at 40 PSI, which is enough to generate a total of about 200 CPUs. Using a simple spray nozzle, we’ve all seen how better it is to remove dirt from surfaces. Using a garden hose spray nozzle that generates 200 CPUs to clean your driveway is a waste of time. Pressure washers that are rated at 2,500 PSI and 2.0 GPM (5,000 CPU) have a 25-fold increase in CPU over the usual garden hose spray nozzle.
At 4 GPM and 4,000 PSI, a commercial pressure washer packs 16,000 CPUs. In terms of productivity, it’s easy to tell the difference. These statements can only be applied to a certain extent. With a water jet cutter, you can cut steel or concrete with high pressure and low volume, and a river if you have very high pressure and low volume. There is no need to use either of these to clean your home or driveway.