Tired of being cold during a power outage and having gas furnace that won't work because it is controlled by electricity. Most furnaces are controlled by a 110v circuit. Find that curcuit and install a double pole double throw switch. One end is the house circuit and one goes to a 110v 1000 watt inverter that you can hook up to a car or marine battery. This can keep your electricity to the furnace going and keep your furnace running. Just change the switch when the power goes out and...