An EBS interface board is installed at each furnace to be metered. This sensor board detects the operation time of the gas valve. Gas flow time is collected and measured in 100ths of hours. The sensors also provide tamper and meter error detection. The sensors are connected to wireless transmitters, typically installed on a nearby wall. As required, repeaters are installed throughout the community to receive signals from the transmitters, verify them and amplify the signal to peak power, for transmission to the receiver. The receiver and central unit, typically installed in the clubhouse, decodes transmissions from the receiver and stores the meter readings for retrieval by Energy Billing Systems, Inc's billing computer. The meter readings (time that the gas valve is open) are multiplied by the BTU/hour specification of the furnace to determine the relative amount of gas (in 100 cubic feet = CCF) that has flowed through the gas valve.