I’ve looked at a few websites and see that I can get gas powered washers for upwards of $400 and also get small electric ones for as low as $80. I know that the huge difference seems to be the pressure that each puts out (PSI) but that’s all I know.

Can I get a compressor so I can say attach a paint sprayer, a tire inflator and then attach a head so I can pressure wash? Or do I have to get a compressor for paint and air and then a pressure washer as well? I’m mostly interested in the washing part but would be nice to have an all in one solution if that is even available?

Here is what I want to do…wash the cars, RV, kids bikes, driveway, vinyl siding on the house and basic yardwork type of chores.

Please help me figure out what to buy?

If it were me… I’d go to the local rental equipment shop and question the guy in charge of what he thinks. Why – because he would be the one very familiar with what you’d be looking for. As that’s what he rents, and is very knowledgeable about.