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Many of our customers are curious about the extra electrical
cost associated with some of our systems. The electrical consumption of some of our systems is very small. The
electrical operating cost of our water filters and softeners are about the same as running an electric clock. We
will show you how to calculate the electrical operating cost of not only our systems but any electrical device
in your home. We have chosen two examples - radon
air systems and water radon systems.
To calculate the operating cost of an electrical device you will need to obtain information that is always printed
somewhere on the device. You must either find the number of watts it uses or the full load current in amps and the voltage the unit operates at.
The equations that you will need are-
Equation #1
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Power in Watts =
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Current in amps X Voltage |
Equation #2
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Cost =
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Power in watts X Time in hrs. X Price per KWH
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1000
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EXAMPLE 1:
The fans we presently use draw .54 amps under full load conditions. They operate at 120 volts.
First determine the power consumption in watts using equation #1-
| Equation #1 |
Power in Watts =
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.54 amps X 120 volts = 64.8 watts |
If the cost of electricity is $.11 per KWH and the fan runs 8,760 hours (24 hrs. X 365 days)
Then using equation #2 - |
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Costs =
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64.8 watts X 8760 hrs. X .11/KWH
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= $62.44 per year or |
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1000
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about 17 cents per day |
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EXAMPLE 2:
The total current draw for the system is about 15 amps and the voltage is 120.
First determine the power consumption in watts using equation #1-
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Equation #1
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Power in Watts =
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15amps X 120 volts = 1800 watts
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For a family of four the unit will run about .75 hrs. per day. So the total run time for a year will be about 273
hrs.
Then using equation #2 |
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Costs =
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1800 watts X 273 hrs. X .11/KWH
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= $54.05 per year or |
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1000
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about 15 cents per day |
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