Where I live, I've never seen so many cords of wood stacked up beside homes. There are new high-efficiency wood furnaces on the market now, that use dual-source heating -propane, NG, electricity. Wood is the main fuel. These furnaces heat an entire home quite comfortably. There are lots of the old-fashioned wood stoves out there, too. They used to be ''charming.'' Now, they're a main heat source..