No cool main level and upstairs 2018 Lennox split On upstairs system cycled equipment from thermostat in cool mode and inspected hvac system 2 ton Lennox heat pump split. Found system critically low on refrigerant. Performed electronic leak search found leaks in evaporator coil. Checked with Lennox about warranty and equipment was not registered so warranty has expired. On main level found welded contactor. Gave client repair options and scheduled install supervisor to give options on updating equipment Based on our findings today, it might be time to think about getting a brand new system.