When a light is fixed, you can see that it has been repaired.

In aircon systems, there are often unseen faults, even with regular testing and maintenance.

We tested several buildings aircon systems all with regular maintenance contracts and found  following failure rates in FCUs.

• ALT  100%
• SBY   60%
• LL      52%
• RAD  43%
• WFG 42%
• LWY  40%
• RS      30%
• 4BR    0%

These tests highlight the difficulties faced by many tenants and landlords in understanding whether their ‘Aircon’ is functional.