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COST OF SERVICING HEAT PUMPS IN ALABAMA.

Author(s) : LOVVORN N. C., BARTOLUCCI A. A., BIRCH R.

Summary

THE MAJOR FINDINGS INCLUDE: THERE IS A CORRELATION BETWEEN THE COST OF OWNING AND RELIABILITY, WHICH IS EVIDENCED THROUGH A 20% LOWER CUMULATIVE COST TO SERVICE PACKAGE HEAT PUMPS THAN SPLIT HEAT PUMPS AT THE END OF YEAR 5 AND A 15% LOWER CUMULATIVE COST AT THE END OF YEAR 10 ; THE COST TO SERVICE STUDY REVEALED THAT THE LOWEST COST TO SERVICE BRAND HAD A TOTAL SYSTEM MEDIAN LIFE OF APPROXIMATELY 20 YEARS IN A RANGE OF 16 TO GREATER THAN 20 AND A COMPRESSOR LIFE EXPECTANCY IN EXCESS OF 10 YEARS WITH AN EXTRAPOLATED COMPRESSOR MEDIAN LIFE OF APPROXIMATELY 13.5 YEARS ; THE COST OF MAINTAINING A HEAT PUMP BEING MARKETED IN THE MOST CURRENT 10-YEAR PERIOD IS APPROXIMATELY $600, OR $60 PER YEAR ; THE SERVICE FREQUENCY OF HEAT PUMPS HAS DECREASED SIGNIFICANTLY OVER THE PAST 20 YEARS. IN 1980-1985, APPROXIMATELY 50% OF THE UNITS HAVE REQUIRED NO SERVICE CALLS DURING THE FIRST 5 YEARS AFTER INSTALLATION.

Details

  • Original title: COST OF SERVICING HEAT PUMPS IN ALABAMA.
  • Record ID : 1988-0314
  • Languages: English
  • Publication date: 1987
  • Source: Source: ASHRAE Trans.
    vol. 93; n. 1; 1128-1136; 12 fig.; 1 tabl.; 3 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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