Assessing Geothermal Heat Pumps for a Southeast Alaska Property
Friday, January 16th, 2009
Geothermal heat pump application will reduce heating costs and reduce risks of monopolistic pricing practices by the only diesel supplier in town.
I’m evaluating using a geothermal heat pump to heat a property I manage in Southeast Alaska. The drivers for considering this application are:
1. Presently the property is heated using a diesel oil powered furnace for radiant in floor heating. The price of diesel oil is controlled by one monopolistic company in town and the prices go up but not down.
2. The property is vacant about 30% of the time - primarily during the coldest winter months. The heat pump will keep the house warm enough to prevent damage from freezing if no one is on site. The property has a large central chimney with a large wood stove that would suffice as the heating back up on days where the heat pump system may not provide sufficient heat when people are present.
3. There are numerous options for the geothermal heat source of water - the property is on a large body of water that never freezes.
The best site I have found so far that succinctly defines how geothermal heat pumps work is by the California Energy Commission - http://www.consumerenergycenter.org/home/heating_cooling/geothermal.html




