The variety may confuse and overwhelm you – especially if you’re not familiar with the technicalities. In this case, you can sort it into these categories:
Power: Intensive cleaning may require professional-grade gas pressure washers with a PSI of 3100. However, it does not necessarily mean that you need higher pressure as this damages paint finishes if not used appropriately. Only use high powered models only if this is the intended use of the equipment.
Maintenance: Compared with electric-powered models, gas-powered models may require regular maintenance and servicing.
Adjustable water handles: Some models come with adjustable nozzles and other by changing spray tips. The fan-like spray works best in cleaning delicate surfaces like cars or even bathing pets. High water volume blast (usually set on zero degrees) is fit for scouring dirt and grime such as cleaning grills and sidewalks.
Set-up and mobility: Most pressure washers come with 2 or 4 wheels. Most electric-powered models are easy to set-up and portable. Large wheels will keep it from tipping over when you’re using it.
Pump security: Electric pressure washers are usually embedded with GFCI that keeps water from flowing when it’s not in use. For gas pressure washers, there are thermal relief valve to let cool water run through the pump if it’s not in use. These are essential to keeping the machine from overheating and pump failure.