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Predictive Maintenance Programs (PMP’s) in Small HVAC Applications: Analysis of Available Products and Technology
Maintenance of HVAC&R systems and scheduled replacement of components to avoid costly down time, degraded comfort conditions, or health hazards is not new. In fact, designs have not changed dramatically in many years. However, new regulations placed on CFC emissions and other environmental and energy conservation concerns are causing changes.
DescriptionThis paper offers an overview of predictive maintenance technologies available. With the exception of the considerably more complex and expensive control type systems (e.g. the AKCESS 25 from Danfoss), all of the predictive maintanence systems presented here basically rely on comparative temperature measurements. The list of PMP's presented here is not to be considered exhaustive.
- Technical Reports 
Watt, J. B. (1994). Predictive Maintenance Programs (PMP’s) in Small HVAC Applications: Analysis of Available Products and Technology. Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University; Department of Mechanical Engineering, Texas A&M University. Available electronically from