Most times, your furnace will perform optimally; however, occasional problems such as incorrect thermostat settings and blocked vents may interfere with heating efficiency. Before calling a Trane dealer or an HVAC technician, a few troubleshooting guidelines may solve problems if your Trane furnace is blowing air but not heat.
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Check your thermostat's settings and make sure it's set to "HEAT." If your thermostat has a fan button, push it to the "ON" position. Increase the temperature set point if your Trane furnace still isn't producing heat. Select a temperature setting that is higher than the indoor temperature displayed on your thermostat. Some thermostat's have recommended temperature set points, so refer to your device's manual for additional troubleshooting notes.
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Reset your thermostat if it's not regulating temperature properly. If your thermostat has a reset button, press it for a few seconds, and then release. The process for resetting a thermostat varies with different models, so refer to your device's manual.
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Inspect the vents and remove obstructions such as toys, drapes and furniture that could be blocking airflow. Blocked vents may limit the efficiency of your Trane heating system.