Miscellaneous : Gas Fireplace Cost Ventless Gas Fireplace Cost
Quote from Gas Fireplace Cost :
After you have already known those two things above, then you may compute the therms per hour. Just divide the BTUs of your gas fireplace by 100,000 and the result shows the therms you run per hour. The last, compute the gas fireplace cost by multiply the therms used per hour by the cost per therm in your area.