How many watts does an electric pressure washer use?

Electric power washers commonly draw 12.5 amps when operating; the better ones include tighter internal machinery to produce more pressure at the nozzle. At a voltage of 120 volts, the power consumption equals 12.5 amps times 120 volts, or 1,500 watts (1.5 kilowatts) per hour.Click to see full answer. Similarly, how much power does a pressure washer use?Most electric pressure washers create 1300-1700 pounds per square inch of pressure (PSI) with a water flow of 1.5 gallons per minute (GPM), but experienced contractors recommend between 2000 and 3000 PSI and a flow of at least 2.5 GPM to clean dirty concrete effectively.Additionally, how much does it cost to run a pressure washer? So, it’s important to consider factors such as pressure (PSI), flow (GPM) and compatibility with different types of cleaning fluids. Cost: Purchasing an electric washer can run you anywhere from $90 to $200, while gas-powered washers generally cost between $300-$800. People also ask, what size generator do I need to run a pressure washer? However, electric pressure washers and other power tools need a power surge at start up to begin turning the motor over. So multiply the required Watts by 2.5 to get the start up Watts required. In our example, 2.5 x 1,650 = 4,125 W. Thus you would need a 4,000 Watt generator to run a 110 V x 15 A pressure washer.How many PSI Do I need to clean concrete?To clean your deck or the exterior of your house, you need 1500 psi. To clean your concrete driveway, you need 3000 psi. If you want to use a pressure washer for all these tasks, you need one that is adjustable and can deliver a force of up to 3000 pounds per square inch.