We use these guys for lift tickets often and are always impressed by the deals we get and how many resorts they have. Highly recommended.
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For a pressure washer, this snowmaker is designed to work best with pressure washers that have a GPM (Gallons per Minute) flow rating of 2.1 - 3.4 GPM. The washer needs to be at rated for at least 1000 PSI (Pounds per Square Inch) but the exact number doesn't matter too much. If you have a washer with less than 2.1 GPM, replace one of the 4002 nozzles with a plug when you build your snowmaker.
This is a pretty standard electic pressure washer that can crank out a good amount of snow. It lists for $99 but is often on sale. You may need to buy a pressure washer extension hose as well (about $15 at any hardware store or Amazon) if your model comes with a one-piece hose/wand combo as they sometimes do.
1,350 PSI, 1.3 GPM Electric Pressure Washer
Not the most reliable engine, but a good flow rate and a good setup. Don't expect to engine to last forever, but you'll enjoy plenty of snowmaking with this beauty.
Briggs & Stratton 20418 2,700 PSI 2.3 GPM
This is an awesome pressure washer for snowmaking. Reliable Honda engine, high flow rate (2.5gpm), solid frame.
Power Boss 3,000 PSI , 2.5 GPM, Honda GC190 Engine