Is it safe to stay in a house with a refrigerant leak?

Staying in a residential home with a minor refrigerant leak depends heavily on the specific type of refrigerant, the concentration of vapors in the air, and the ventilation of the living space. Older residential systems utilize R-22 refrigerant, while modern systems use R-410A. In small, trace amounts, breathing refrigerant vapors in a well-ventilated house typically causes no immediate harm, but concentrated exposure in a closed, poorly ventilated room displaces oxygen and can lead to acute symptoms like dizziness, headaches, nausea, throat irritation, and coordination loss. Modern refrigerants are generally non-toxic and non-flammable under normal conditions, but large leaks require immediate action. You should open windows to ventilate the home, turn off the HVAC system, and call a licensed technician. You can verify safety when gas levels clear and repairs are completed.