The answer to 'how to fix furnace repair' is to first identify the problem and then take the appropriate steps to address it. This may involve cleaning or replacing air filters, checking the thermostat, inspecting the blower motor, or troubleshooting other components. It's important to follow safety precautions and refer to the manufacturer's instructions when performing any furnace repairs.
If the issue is more complex or you're not comfortable working on the furnace yourself, it's best to call in a professional HVAC technician. They have the expertise and tools to properly diagnose and fix the problem, ensuring your furnace is running safely and efficiently.