AC-Appliance Pros
Energy Savings
Operating Costs

Meter Reading

A kilowatt-hour (kWh) is the common measure for the amount of electricity consumed during a period of time. One kilowatt-hour equals 1,000 watts being used for one hour.

A simple formula can help you discover how many kilowatt-hours an appliance uses. Multiply the wattage rating of the appliance by the number of hours the appliance is used to find out how many watt-hours are used (watts x hours used = watt-hours). Divide the number of watt-hours by 1,000 to determine the kilowatt-hours used (watt-hours ÷ 1000 = kilowatt-hours). Multiply the kilowatt-hours used by the cost per kWh to find out the cost to operate an appliance over the specified period.

The dials of your electric meter should be red from right to left. Each dial has numbers from "0" to "9". If the pointer is between two numbers, read the lower number. If the pointer appears to be exactly on a number, the only way to be sure it has reached that number is to determine if the dial to the right has completed its revolution, or passed zero. For example:

The pointer of Dial #2 appears to be exactly on the 5. However, since the pointer of Dial #1 has not yet reached zero, Dial #2 must be read as a 4. So this meter reads 0749 or 749.

Now the pointer of Dial #1 has reached zero, so Dial #2 becomes a 5. This meter reads 0750 or 750.

To determine the number of kilowatt-hours used in a month, simply subtact last month's reading from this month's reading.

Typical Operating Costs

Appliance Typical Wattage Approximate Cost
Normal Use
Air Conditioner SEER
7.0
10.0
12.0
14.0

13-3/4¢ per ton per hour
9-1/2¢ per ton per hour
8¢ per ton per hour
6-3/4 per ton per hour
Blender 330 2-3/4¢ per hour
Can Opener 220 1-3/4¢ per hour
Clock Radio 10 23¢ per month
Computer 200 1-1/2¢ per hour
Dishwasher 1200 6-1/4¢ per load
Dryer-Clothes 5500 22¢ per load
Hair Dryer 1200 9-1/2¢ per hour
Refrigerator-12 cu. ft. 225 $4.00 per month
Telephone-Cordless 6 17-1/4¢ per month
Television-Color 150 1-1/4¢ per hour
Water Heater 4500 $27.00 per month


If you don't know which firm to call, ask if the contractor is a member of the Air Conditioning Contractors of America (ACCA). consumers can call (972)247-5383 or 1-800-260-8041 to confirm the contractor is a member or to locate a contractor who subscribes to the organization's code or ethics.


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Richardson, Texas 75081
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