The answer to 'furnace repair not cooling' is that the most common causes are a malfunctioning thermostat, a clogged air filter, or a problem with the compressor or refrigerant levels. Symptoms may include the furnace running but not blowing cold air, or the system cycling on and off frequently. Solutions can range from simple DIY fixes like replacing the air filter to more complex repairs that require a professional HVAC technician.
If the furnace is not cooling properly, the first thing to check is the thermostat. Make sure it is set to 'cool' and the temperature is set lower than the current room temperature. If the thermostat seems to be working, the next step is to check the air filter and replace it if it is dirty or clogged. A dirty filter can restrict airflow and prevent proper cooling. More serious issues like a malfunctioning compressor or low refrigerant levels will likely require professional diagnosis and repair.