Generating higher water pressure from your garden hose allows it to power away muck from automobiles and mold from house siding. Although you can increase the garden hose's water pressure by adding a high-pressure nozzle, it won't create the high level of water pressure generated by a pressure washer. The reason is that a pressure washer has a pump that produces 500 pounds or more per square inch of water pressure. You can increase the water pressure of your garden hose, however, by attaching it to a firefighter- or fireman-type nozzle that has a 250 psi rating. Wear eye protection to avoid injury when using a high-pressure hose.
Step 1
Inspect the end of the garden hose that is designed to screw onto a faucet. It must contain a rubber washer that is not cracked. A cracked rubber washer causes a hose end to leak and reduces water pressure. Pry out a cracked rubber washer by using a flat-head screwdriver. Push a new rubber washer, sized to fit your garden hose, in place with your finger.
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Step 2
Examine the entire length of the hose for cracks and holes. Areas such as those leak and can blow out when the hose is under pressure. If you find cracks, holes or other weak areas, replace the hose with a new one. Using a hose that is only long enough to reach the area where you want to use it is best because the less distance water travels in a hose, the greater the water's pressure is.
Step 3
Screw one end of the hose onto a faucet. Attach a fireman-type nozzle with a 250 psi rating onto the hose's other end.
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