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Directory of Pressure Washing Services. The following cost information is intended to be general information. If you are looking for an exact cost for a pressure washing service, you need to contact a professional in your local area. What is the average cost of a pressure washing a house? The average cost of pressure washing a house ranges from $250 to $450 depending upon your geographic location and the size of your home.
To get the total cost per load for a washing machine, we add the costs for water, electricity, and water heating. 1  For water, we'll figure 40 gallons for a standard top-loading U.S. washer, and the national average of $5.44 per thousand gallons, which gives us $0.22 per load for water. For electricity to power the washer, we'll figure 0.256 kWh times a sample cost of 15Â¢/kWh, which gives us $0.04 for electricity.