Hi guys,I have a VRV system installed in my building but in summers I often get A/C complaints.I contacted daiken and they told me that the system has lived its life almost 9.5 years and also the diversity factor is quite high and we need to change are outdoor unit with a bigger capacity

I have 36 HP outdoor units for my 7 floors each.They are recommending to change it with 50 HP each .In this w ay they are saying that diversity factor which is 142 % will come down to 102 %..But how ???