Since power washing uses heated water, it requires more expensive equipment, meaning you'll pay more for power washing. However, you get what you pay for in this case—especially if you have tough dirt and stains you want to quickly remove from concrete surfaces or other durable materials.

The main difference is that power washing uses highly pressurized steam to do the cleaning while pressure washing just uses unheated tap water, without the help of a heating element.

This could be a lucrative side gig or a full-time operation. Consider that the average pressure washing costs between $192 and $401 per job. If you did two jobs a day at $250 each, you'd make $130,000 a year working 260 days per year. That's good money and a lot of time off to enjoy it.

A power washing machine's jet wash uses heated water, while a pressure washer uses cold water. Both techniques use water pressure to remove dirt, grime, algae, etc., from outdoor surfaces. However, power washing also heats water to clean hard to remove dirt.