31
INSTALL AN AIR-SOURCE
HEAT PUMP
This works on a similar principle to the ground-source heat pump, exchanging heat with the
air rather than the ground.
You will need space on an outside wall to fit the evaporator coil. It is slightly less efficient than the ground-
source version, but in a well-insulated property can be quite effective. As such, it can contribute towards energy
spent on heating and cooling to the tune of $800 for a system that costs in the region of ten times that to install.
MORE INFORMATION ABOUT RENEWABLE ENERGY AND POWER MICRO-GENERATION
N.B. The following notes apply to all of the renewable energy technologies mentioned in this and preceding
entries:
-The DSIRE (Database of State Incentives for Renewables and Efficiency) database at www.dsireusa.org/
provides a comprehensive listing of all federal, state, and local incentives (tax breaks, grants and interest-free
loans) for investing in renewable energy micro-generation.
-Also see the DOE’s own website www.doe.gov/energysources/ for information on the different sources of
power available.
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