Sealed Suction or Inches of Water Lift and how they relate to vacuum cleaners:
The sealed suction of a vacuum cleaner as rated in inches of water lift is a good indication of how well it will perform, especially when comparing systems with higher resistance to the air flow. The air flow is proportional to the amount of suction produced by the motor and inversely proportional to the total resistance to air flow within the complete system. Therefore, if everything else is equal, the more suction produced by the motor, the better the performance of the system. The sealed suction rating is somewhat greater than the suction normally produced when operating with air flow. It indicates the maximum suction which can be produced by the motor as described in the section about the load on the suction motor. Since the sealed suction rating is measured with absolutely no air flow, it is not affected by the resistance to air flow within the system. If there are no leaks within the system, the sealed suction as measured on a gauge will be the same at the cleaning nozzle as it is at the suction motor. Even if the filter system is extremely restrictive, the sealed suction will not be affected by it. Alternately, when air flow is present, the actual suction will decrease as resistance to the air flow increases between the suction motor and the point where it is measured.
GarageVac sealed suction=> 100" of water lift The other garage vacuums, 55-95"
Amperage Ratings and Vacuum:
The amperage rating shows the maximum amount of electrical current which normally flows through the vacuum cleaner's electrical system. This is the sum of the amounts flowing through the suction motor and electronic components. A rating of twelve amps is the maximum permitted for any appliance which plugs into a standard household electrical outlet. Don't be fooled by ridiculous HorsePower ratings, which have nothing to do with vacuum suction.
GarageVac Amp rating=> 12 Amps The other garage vacuums, 8-10 amps
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