Ice on your ductwork or AC lines can indicate a problem with your air conditioning system. Here are some common reasons for ice formation: Low refrigerant levels: If your AC system is low on refrigerant, it can cause the temperature of the evaporator coil to drop below freezing, leading to ice forming on the coil and surrounding components, including the AC lines. Low refrigerant levels may result from leaks or an undercharged system. Contact Martino HVAC to inspect your system, repair any leaks, and recharge the refrigerant as needed. Dirty air filter: A dirty or clogged air filter can restrict airflow across the evaporator coil, causing it to become too cold and ice up. The ice can then spread to the AC lines and ductwork. Check your air filter and replace or clean it if necessary. Blocked or dirty evaporator coil: Dirt or debris on the evaporator coil can reduce its ability to absorb heat, causing it to freeze and develop ice. This ice can then spread to the AC lines and ductwork. Clean the evaporator coil or contact Martino HVAC for professional cleaning. Malfunctioning blower motor: If the blower motor isn't working correctly or has failed, it can result in reduced airflow across the evaporator coil, causing it to freeze and develop ice. Contact Martino HVAC to inspect and repair or replace the blower motor as needed. Obstructed return air vents or ducts: Blocked return air vents or ducts can restrict airflow across the evaporator coil, leading to freezing and ice formation. Ensure all return air vents are open and unobstructed, and inspect the return air ducts for any blockages or damage. If you notice ice on your ductwork or AC lines and cannot identify the cause, it's essential to contact Martino HVAC for a professional assessment and any necessary repairs. Operating your air conditioning system with ice on the components can cause damage and reduce efficiency, so it's important to address the issue promptly.