Lean air gas burner, e.g. for furnaces and dryers, has at least part region of injector which can be altered in shape or dimensionThe gas burner (1) has a gas lance (5) with a burner housing (2) round it to which combustion air can be supplied. The gas lance contains an injector...
An inexpensive power meter such as the Kill-A-Watt electric usage monitor can help you figure out which of your appliances are sucking up the most juice when they should really be sound asleep, but do the savings you hope to gain by unplugging your gadgets offset the $25 cost of a usage...