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What’s The Problem Space? Compressor oil migration, which is unavoidable, impedes heat transfer capabilities that reduce energy efficiency Loss of energy efficiency of 7% the 1st year, 5% the 2nd year, and 2% each following year according to ASHRAE1
This ‘silent’ problem degrades every year requiring more kWh ($$$) to overcome inefficiency
What’s The REAL Problem?
The real problem is the operation and maintenance costs of inefficient equipment. In 1996 the average cost per kWh was 2.4¢. In 2006 the average cost per kWh is 8.1 ¢
On average, HVAC maintenance costs have more than doubled during the same period A new unit installed in 1996, if still in operation, in total compliance with the prescribed OEM maintenance, has had its performance degraded by as much as 30%2 The real problem is the significant money that it costs your company to do nothing or continue in a maintenance program incapable of adequately addressing this ‘silent’ problem. This problem is exacerbated by HVAC, operations, and facility technicians who either don’t know it exists, are misled by OEM technicians to marginalize it, or who refuse to act in the presence of even the slightest risk. 
Why do systems lose efficiency? - As defined by ASHRAE3 Systems degrade due to buildup of contaminates on internal metallic surfaces This buildup causes: Increased kWh at startup Higher air supply temperature Wasted energy usage Increased operating pressure Heat exchange inefficiency Increased operating time High electric bills Shorter equipment life
ASHRAE Citations
1, 2 “A Survey of Refrigerant Heat Transfer and Pressure Drop Emphasizing Oil Effects and In- Tube Augmentation;” ASHRAE Winter Symposium of 1987; Schlager, Plate, and Bergles. 3 1998 ASHRAE Handbook, Refrigeration, Chapters 2.9 and 6.7
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