For your estimate, we convert one Therm to 100 cubic-feet of natural gas.
A therm is 100,000 BTU. The average heat value of natural gas is 1000 BTU per cubic foot. A BTU (British Thermal Unit) is enough heat to heat one pound of water one degree (F). Natural gas is sold to the customer in units of 100 cubic feet (therm) or in a unit called MCF. A therm represents approx. 100,000 BTU of heating power, enough to heat a normal home for about 2 hours during colder weather.
Please contact your utility if you have questions about your rate. Or, contact a renewable energy Professional who can help you develop a strategy to minimize your utility bills.
Go to www.find-solar.org