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Natural Gas Usage Calculator

If you're wondering just how much natural gas you use at home, we'll help you figure it out. Using our natural gas usage calculator you can determine where you may be able to cut back or upgrade to more energy efficient products. The idea is to see just how much natural gas you use and how much it costs, per therm and total.

We'll start with the average Georgia natural gas therm rate of $0.79 - the average price per therm for an 18 month fixed rate plan in Georgia in Septmeber 2010. Please note, your actual cost per therm may vary depending upon your natural gas provider. The field is pre-populated with the $0.79 cost per therm. However, you can change the amount to reflect you actual cost per therm. Simply type in the cost per therm found on your most recent natural gas bill.

Please remember your natural gas usage will rise dramatically in winter months if you use a natrual gas heating system. This calculator does not attempt to average winter natural gas usuage, but a typical daily use thorughout the year.

 

Your Current Cost per Therm: $

 

Location Appliance Average BTU Per Use1 Average Use Monthly Cost Annual Cost
Kitchen Oven hrs /week
  Oven - broiler unit hrs /week
  Oven - stovetop burners hrs /week
  Oven - pilot light3 (always on) hrs /week
       
Laundry Room Dryer loads /week
  Washer - Top Load (40 gal)2 loads /week
  Washer - Front Load (25 gal)2 loads /week
       
Living Room Gas Fireplace hrs /week
       
Bathroom Shower (2.5 gal)2 /week
  Baths (15 gal)2 /week
       
Always On Hot Water Heater Pilot Light3 (always on) hrs /week
  Furnace Pilot Light3 (always on) hrs /week
       
Outdoors Natural Gas Grill hrs /week
  Pool Heater4 hrs /week
       
     

 


Monthly Cost Annual Cost
Total


1 Unless otherwise noted, the "Average BTU per Use" assumes a single hour is used for each "use" of the appliance.
2 Appliances using hot water are estimated on the amount of water used and the btu it takes to heat a gallon of water. A btu is the unit of measure for the amount of energy it takes to heat a pound of water by a single degree Fahrenheit. A single therm is equal to 100,000 btu and a gallon of water weighs 8.3 pounds. Assuming the average hot water heater tank is 40 gallons, and the incoming water supply is 60 degrees, and we like our hot water at 110 degrees, we'd need to heat the tank 50 degrees. The formula used would be (40 x 8.3 x 50)= 16600 btu, or approximately 0.166 therms. The average shower uses 2.5 gallons of hot water per minute, at 5 minutes with the average bath using 15 gallons. Knowing that, he shower formula would be (12.5 x 8.3 x 50) = 5188 btu and the bath formula would be (15 x 8.3 x 50) = 6225 btu.
3 The average btu for the "Always On" items typically pilot lights, are estimated on a 24 hour basis at 168 hours per week.
4 This assumes the average pool heater runs for approximately 100 hours per month.

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