人们普遍推测，商用地源热泵系统的服务和维护成本明显低于其他暖通空调系统，但尚未得到证实。本文描述了最近开展的利用地源系统调查商业建筑的工作。本文提供了25个此类系统的数据，包括内部维护和承包商提供维护的总维护成本（单位:美元/百平方英尺/年）。统计数据显示，该样本的总维护成本显著低于1995年ASHRAE手册中报告的常规系统的维护成本- 应用。调查最近一年的平均年度总维护成本为7.32美元/100 ft2至10.95美元/100 ft2，分别适用于内部劳动力和承包商提供的维护。单位:I-PCITION:研讨会，ASHRAE交易，1998年，第104卷，第2部分，多伦多

It has been widely speculated, but as yet unsubstantiated, that commercial ground-source heat pump systems have significantly lower service and maintenance costs than alternative HVAC systems. This paper describes efforts recently undertaken to survey commercial buildings with ground-source systems. Data from 25 such systems are presented here including total maintenance costs in dollars per hundred square feet per year both for in-house and for contractor provided maintenance. The total maintenance costs for this sample were shown statistically to be significantly lower than those reported for conventional systems in the 1995 ASHRAE Handbook- Applications. The mean annual total maintenance costs for the most recent year of the survey ranged from $7.32/100 ft2to $10.95/100 ft2for in-house labor and contractor provided maintenance, respectively.Units: I-P