Hot Tub Pumps and Motors

Cost of Operation in a Hot Tub

As with any electrical appliance, you can easily calculate the cost of operation of hot tubs. Electricity is sold by the kilowatt-hour. This is 1000 watts of energy per hour. We know that volts x amps = watts, so we look at the motor nameplate. We see that the motor runs, for example, at 15 amps when supplied with 110-volt service and at 7 amps when supplied by 220-volt service.

Let's say the service in our example is running on 220-volt service. We multiply 220 (volts) x 7 (amps) = 1540 watts. Looking at a local electric bill, we learn that we pay 15 cents per kilowatt-hour. As noted above, 1 kilowatt is 1000 watts, so if we divide 1540 watts by 1000, we get 1.54. That is multiplied by our kilowatt rate (of 15 cents), which equals 23 cents for every hour we run the appliance.

If we run the motor 2 hours per day, that means 23 cents X 2 hours = 46 cents per day. Over 1 month, that equals 30 X $0.46 = $13.80.

Hot Tubs | Hot Tub | Hot | Tub | Tubs | Hot Tubs