Good Question!
Typically belt driven units have a slower RPM pump,
and tend to last longer, (usually 1450 to 1750 RPM)
A drawback may be the fact that they usually are
priced higher, but IMHO "Price is a one time issue, and
cost is a lifetime issue."
Direct drive units have a high speed pump 3450 RPM
on gas engine driven units, and 1725 - 3450 RPM on
electric motor driven units.
The pump is really the heart of the pressure washer.
The big difference between belt drive and direct drive
pumps is that belt drive pumps run at a lower RPM and
are insulated from engine or motor vibration, and therefore
may extend the pump live. Direct drive pumps are directly
mounted to the engine or motor, which eliminates the extra
cost of gearbox, pulleys, belts, etc. Expect to pay a 12-35%
premium for belt driven units VS direct drive washers.
For more info on this subject try our search feature found
at top of page .......type in belt drive or direct drive.
Hope this info helps!
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