Replace RO membrane to restore water purity...
Repair or replace RO motor/pump...
Fix any water leakage in RO system...
Repair electronic control board of RO...
Fix low water flow or no water issue...
Adjust TDS controller or replace parts...
Standard RO installation with existing plumbing...
RO installation including drilling and fittings...
Remove RO unit safely...
Uninstall and reinstall at new location...