No cool both 12 year old Lennox system in Buford. Check and find upstairs system leaking water due to worn secondary drain line rubber. System freezing up and coil water to leak into pan and leaking into ceiling at drain pan connector. Find both Lennox evaporator coil leaks recharge. Find upstairs almost empty of charge and downs stair low in charge and freeing up. Due to system age and conditions. Suggest to replace both Lennox system