FAQ's
What are the major benefits?
How efficient is a geothermal heat pump?
They are more than three times as efficient as the most
efficient fossil fuel furnace. Instead of burning a combustible fuel to
make heat, they simply move heat that already exists. By doing that, they
provide three units of energy for every one unit used to power the heat-pump
system.
What does a system like this cost?
A system for the typical home will cost more than if
you bought a separate furnace and central air-conditioning system. But you
wouldn't really be comparing apples to apples. To get an accurate comparison
of cost you need to consider the following:
- Payback or how long it takes to recover the difference in cost between the two systems using energy savings. Payback for most geothermal heat-pump systems runs two to six years
- Energy efficiency of the two Systems. To get an accurate picture, make sure efficiency claims are substantiated. Your lifestyle and how well your home is insulated affect how economical a system will be
- Total operating savings from heating, cooling and domestic hot water must be combined to get an accurate picture of total energy savings
- Energy cost and availability, both present and future
- Maintenance cost and system reliability
- System lifespan
A geothermal heat pump system moves warm air (90 degrees
- 105 degrees) throughout your home via a standard duct network. Typically,
a very even comfort level is found throughout the home. This is because
the warm air is moved in slightly higher volumes and, therefore, saturates
the home with warmth more evenly. This helps even out hot or cold spots
and eliminates the cold air blast common with fossil fuel furnaces. It's
also a great comfort to know that you've reduced your energy consumption
while using an inexhaustible energy source - the earth.
Which system is best, open - or closed loop?
The net results in operating cost and efficiency are
virtually the same. Which system to choose depends mainly on whether you
have an adequate groundwater supply and means of disposal. If you do, an
open loop can be used very effectively. If not, either a horizontal or vertical
closed-loop system is your best choice. Over a period of years, a closed-loop
system will require less maintenance because it's sealed and pressurized,
eliminating the possible buildup of minerals or iron deposits.
Can I get a tax credit for installing this system?
It depends on where you live. Some states and provinces
do have tax credits for installing geothermal systems. Check with your electric
utility, Department of Commerce or Ministry of Revenue for further details.
