Guide To Pool Heating

Page 37 of 51

How To Calculate Pool Heating Costs
When You Use Electric Resistance Heaters

This is a cost estimating template. Simply fill in the appropriate numbers and perform the

simple calculations shown. This template will help you to determine the cost of operating an

electric swimming pool heater.

A.

Cost Per Kilowatt of Electricity
Note: Call your electric company for your rate

__________

B.

Kilowatt Rating of Electric Heater
Note: Look on heaters name plate for KW rating

__________

Alternate KW Rating Approach
Determine Heater Amperage rating ________amps
Determine Heater Voltage rating ________volts
Multiply amps times volts and divide by 1000 for KW

Example: 51 amps x 240 volts = 12240 watts
12240 watts ÷ 1000 = 12.24 KW

C.

Hours per day heater is used

__________

D.

Daily Operating Cost = (A x B x C)

__________

Example:
.09/kw x 12.2 kw heater x 10 hrs/day = $10.98/day

E.

Days in the month heater is used

__________

F.

Monthly Operating Cost = (D x E)

__________

The cost of operating an electric swimming pool heater may be very high. Electric

swimming pool heaters are usually the most expensive pool heaters to operate.