Durable belt-driven power washers are the most durable design available. The pump is driven by a belt and pulley system and is therefore isolated from the vibration and heat of the engine.
These belt-driven pumps spin at half the speed of the engine (or even less). If properly maintained, these pumps tend to last for a lifetime.
A belt-drive pressure washer costs more to purchase than a comparable direct-drive model with the same specifications because of the extra parts and because the pumps tend to be significantly 'beefier' than their price-conscious direct-drive counterparts.
Most experienced contractors look for durability. Most will only buy belt-driven equipment because the life of the equipment is longer and the investment over time is lower.
