Repaired an AC unit with frozen coils, a common issue in Lennox XC16 models. Diagnosed the problem as low refrigerant levels and a dirty air filter. Replaced the filter and recharged the system with R-410A refrigerant to restore proper cooling function. Inspected the evaporator coil for ice buildup and ensured the airflow was unobstructed. Regular maintenance and prompt repairs are essential for efficient operation. For expert HVAC services, contact us to keep your system running smoothly.