A malfunctioning heating system is easy to notice because the heater will not perform to its expectations. For instance, you will experience uncharacteristic furnace smells, such as burnt plastic or electricity. The abnormal smell speaks volumes as it signifies the heating system has a bad blower motor. That implies carrying out heating repairs immediately.
Another sign you need heating repairs is the lack of heat.
That sign could signify a dirty air filter. The heater, in most cases, overheats and fails to attain the set temperatures. The problem calls for getting rid of dirty air filters through replacement with new ones. Another sign is the difficulty in starting the heating system. In such a case, the heater comes on but goes off in seconds. It is a common problem that emanates from dirty flame sensors. The remedy, in this case, is to clean the flame sensors.
Other signs are the persistent noises and poor air quality from the heater. These signs could mean a control board, which calls for heating repairs of the inducer motor.