Since many problems go undetected and get progressively worse over time, learn the red flags of trouble so that you can get help without delay. You should call for an expert if you notice a persistent odor coming from your vents when your furnace is running.
This odor could be a sign of a clogged air filter or something much worse, such as damaged wiring. Unusual noises that come from your furnace are a major red flag that your Rheem furnace needs attention right away. If you turn on your furnace and only feel cold air, your thermostat might be at fault, or your pilot light could be out.