Wijesinghe, R.W.2019-10-012019-10-012000Engineer, 33(2):p.77-82https://dl-iesl.nsf.gov.lk/handle/1/1770Equipment managementPerformanceRequirementsBudgetingEfficienceyIndoor air qualityPreventive maintenanceBreakdown maintenanceCondition based maintenanceCrisis maintenanceMaintenance of air conditioning systems in commercial buildingsArticle