Learning the signs of furnace trouble is a great first step when you would like to keep your furnace in working condition. Dust and other particles can build up inside your unit when you go extended periods without using it, so you might notice a strange smell when you first turn on your furnace. You have a problem on your hands if the smell persists or gives off a burning odor. A rapid, unexpected change in your energy bill is another sign that your Carrier furnace needs expert attention.
If your furnace works but only keeps your home at the same temperature, your thermostat could be to blame. A damaged circuit or shorted wire can prevent you from changing the temperature on your thermostat. Your furnace might need to work much harder to keep your home at the right temperature when problems are present. When you notice the blower running for longer than normal, it’s time to call the professionals. Furnaces that make strange noises are in trouble and need reliable repair work.