Preventative maintenance is strategy for maintaining equipment that is regularly performed before failures occur. Generally, preventative maintenance is on a calendar-based scheduled. An example is an HVAC unit which is serviced every year, before summer.
When operating a building, the strategy that is implemented to maintain normal operations has profound effects on energy consumption, equipment repair costs, and the health and comfort of tenants. Some companies implement tenant preventative maintenance strategies such as automatic ticketing to engage tenants and build a dataset for developing preventative maintenance schedules in the future. Other companies use a building monitoring system to build that data set with data from equipment systems themselves.
Advantages of preventative maintenance
Disadvantages of preventative maintenance
Below is an graphical representation of preventative maintenance being performed on a fan coil unit. As maintenance is performed, the unit increases demand, indicating full capacity. As the unit funs, it gradually decreases it's demand and increases the liklihood of failure.