I have a good friend who runs a detail shop here in Seattle, and he takes care of the heavy lifting (Xpel Clear bra, opti-coat, semi annual wax, etc.)
However, I like to wash and maintain my cars for the most part during the year. Especially during the winter months in the PacNW, its important to keep your paint from getting too much build up.
Prime Example from the other day after a drive:
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Low Pressure:
Goodyear hose
Eley Free Standing Hose Reel
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http://www.eleyhosereels.com/uploaded/thumbnails/db_file_img_319_505x433.jpg
http://www.detailersdomain.com/assets/images/graphics/00000002/adamfirehose.jpg
High Pressure:
Kranzle K1122TST electric pressure washer
General Pump quick disconnects
MTM Hydro snow foam gun
http://ecx.images-amazon.com/images/I/61Gp00zjzzL.SL1500.jpg
Products:
Adams 2-bucket Wash Kit (Gets you everything you need to start off)
Adams Rubber cleaner
Adams tire shine
Sonax Wheel Cleaner
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https://farm6.staticflickr.com/5612/15659443516_62233e603c_c.jpg
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I like to first pressure wash all the loose dirt off the car, foam gun, scrub, wheel wash, and then blow off the car with my Stihl blower.
My setup is evolving, but basically I wanted something that was easy to setup and get going fast, quiet, efficient, and last a long time. The products I use are from trial and error for what works best for me.