We believe the 120 volt versions of the vacuum motor will last longer. In the worst case scenario, the 120 volt version might cost a few additional cents per hour to operate. But even the 120 volt version may not be wasting much power if the opposing circuit is being used by lights or other appliances at the same time.
The cost to operate a 240 volt vacuum can possibly be less than its 120 volt counterpart, because both phases of the power are being used simultaneously. For some homes, maximum amperage for their panel may be close, so the 240 volt version offers the best benefits. Its 240 volt counterpart has 95 water lift and 208 CFM with a peak of 722 air watts. The 120 volt has 85 water lift and 183 CFM with a peak of 514 air watts. But there is quite a difference in our Silent Master S500. The 240 volt version has 136.4 water lift and 190 CFM with a peak of 866 Air Watts. Our 120 volt Silent Master S900, for instance, has 139 water lift and 191 CFM with a peak of 905 air watts. Are 120 or 240 volt vacuum units better?įor the most part, our motor manufacturer has very similar performance statistics between the voltages. Check with a qualified professional, such as a central vacuum dealer or electrician, if you are unsure of the exact voltage supplied by an electrical outlet. Likewise, 240 Volts can be referred to as 220 Volts or 230 Volts. These differences often represent the range of voltage supplied by the power source to the appliance, which can drop a little from the peak values (at the source, called nominal voltage) depending on the type and length of the wires used 1. Sometimes 120 Volts is referred to as 110 Volts or 115 Volts. Understand the different voltage and cord configurations for central vacuum appliances, comparing 110 to 220 volt units using 15, 20, or 30 amp cords.
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