Why do preventative maintenance at all? There are two reasons; first it helps to minimize nuisance service calls. If we can determine that a fan motor is failing or a burner is not operating properly during the scheduled maintenance, then we can quote a repair and have the equipment running properly before there is even an issue. Secondly, to preserve the operating life of the equipment. We have seen units that are 5 years old and ready to be replaced, and have seen other units 20 years old with life still left in them. The difference? One has been maintained and the other has not. It is important to do regular and proper maintenance to prevent accelerated depreciation.
