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geothermal positives vs negatives

. . . are you in a propane area?   or do you have to pay to bring a gas line to your new home with a long driveway?   the cost of a geo installation is sometimes for a quote.

What are the positives and negatives related to using earth energy heat pump systems? POSITIVES There can be extraordinary energy savings - up to 70 percent in some cases. Water source heat pumps DO NOT REQUIRE A DEFROST CYCLE in the heating mode. The DEFROST CYCLE AND THE RELATED STRAINS it puts on an air source heat pump have been directly linked to POOR PERFORMANCE AND SHORTENED EQUIPMENT LIFE. There is NO outdoor equipment required. This solves the noise pollution problem, aesthetics and potential vandalism of air cooled condensers or cooling towers. While Command-Aire recommends using supplemental heat in some areas, the size and operation frequency is substantially reduced when compared to air source heat pumps. If service should be required, the equipment is indoors, not outside where the serviceman is at the mercy of weather extremes. The system provides year 'round comfort; heating, cooling dehumidification and optionally a considerable portion of the hot water requirements. It is a wise investment - there is normally a RAPID PAYBACK (2 to 7 years - depending on fuel/system comparison) and any property equipped for future energy conservation is more marketable. Since there is NO COMBUSTION, there is no chimney or flue requirement and no combustion gases in conditioned space. Thus also, no combustion hazards. Since the system water loop temperature changes much less than outside temperature, the system's performance is relatively unaffected by changes in the weather conditions. The system is all electric - no valuable fossil fuels are consumed and there is no need for the expense of using a second utility; if it's available. The earth energy heat pump system has benefited from the attention from a growing technology. The systems are extremely reliable, utilizing components developed and incorporated after years of research, testing and experience. Two-thirds or more of the heat energy used comes indirectly from the sun - a renewable, non-polluting energy source. No defrost cycle and having the compressor indoors are two factors which contribute to the earth energy heat pump's long life. ASHRAE studies indicate an average life of 19 years for water source heat pumps - substantially greater than the average life of air source heat pumps. The polybutylene EARTH ENERGY PIPE used in closed-loop earth-coupled applications is warrantied for 25 years, with an estimated useful life in excess of 50 years. NEGATIVES Initial first cost is higher than conventional systems, however there is usually a rapid payback. Some customers are concerned about heat pumps due to bad experiences with air-to-air heat pumps, especially in the northern portion of the United States, or based on early installations in the 1950s or 1960s. Water source heat pumps have no defrost cycle, are not subjected to outdoor temperature extremes nor deterioration from weather or atmospheric conditions. Thus, life and performance are substantially improved.