Had an AC tech over today and he suggested that I can swap my old 3.5t Lennox condenser (10yrs old) with a bigger 4t and it should help with house cooling. Evaporator is Trane and 2yrs old. Question is if they are compatible and can be matched? Also, assuming duct work is sufficient, will upping to 4t unit help? For context, it’s a 2,400sq ft house in south Texas, and by all calculations current unit is undersized. Thanks y’all