Closed-loop heat pump system: A heat pump system that uses a loop of buried plastic pipe as a heat exchanger. Loops can be horizontal or vertical.

COP (Coeffi cient of Performance): The ratio of heating provided by a heat pump (or other refrigeration machine) to the energy consumed by the system under designated operating conditions. The higher the COP, the more effi cient the system.

Compressor: The central part of a heat pump system. The compressor increases the pressure and temperature of the refrigerant and simultaneously reduces the volume while causing the refrigerant to move through the system.

Cycling losses: The actual effi ciency of a heating or cooling system is reduced due to start-up and shutdown losses. Over sizing a heating or cooling system increases cycling losses.

EER (Energy Effi ciency Ratio): The ratio of cooling provided by a heat pump (or other refrigeration machine) to the energy consumed by the system under designated operating conditions. The higher the EER, the more effi cient the system.

Fossil fuel: Any of several types of combustible fuels formed from the decomposition of organic matter. Examples are natural gas, propane, fuel oil, and coal.

Geothermal heat pump: A heat pump that uses the earth as a heat source and heat sink.

Heat exchanger: A device designed to transfer heat between two physically separated fluids or mediums of different temperatures.

Heat pump: A mechanical device used for heating and cooling which operates by pumping heat from a cooler to a warmer location. Heat pumps can extract heat from air, water, or the earth. They are classified as either air-source or ground-source (geothermal) units.

Heat sink: The medium - air, water or earth - which receives heat rejected from a heat pump.

Heat source: The medium - air, water or earth - from which heat is extracted by a heat pump.

Hot Water Generator: A device for recovering superheat from the compressor discharge gas of a heat pump or central air conditioner for use in heating or preheating water.

Open-loop heat pump system: A heat pump system that uses groundwater from a well. The water is returned to the environment.

Payback: A method of calculating how long it will take to recover the difference in costs of two different heating and cooling systems by using the energy and maintenance cost savings from the more effi cient system.

Supplemental heating: A heating system used during extremely cold weather when additional heat is needed to moderate indoor temperatures. May be in the form of electric resistance or fossil fuel.

Geothermal heat pumps are similar to ordinary heat pumps, but use the ground instead of outside air to provide heating, air conditioning and, in most cases, hot water. Because they use the earth's natural heat, they are among the most efficient and comfortable heating and cooling technologies currently available.

More Information from our goverment:

Educational Geothermal Systems:

Helpful Resources
- IRS tax code summarized - United States Code Title 26
- More information about the "Residential Renewable Energy Tax Credit"
- Federal tax credit detail: Energy Star requirements

Consult your tax professional for details.

Maitz Home Services Serves the Counties of: Lehigh, Northampton, Berks, Monroe,
Upper Bucks, and Upper Montgomery and the following cities.

Allentown PA 18102 Bath PA 18014 Bethlehem PA 18015 Coopersburg PA 18036 Easton PA 18045 Emmaus PA 18049 Fleetwood PA 19522 Hellertown PA 18055 Kutztown PA 19530 Lehigh Valley PA Macungie PA 18062 Mount Pocono PA 18344 Nazareth PA 18064

Northampton PA 18067 Pennsburg PA 18073 Tobyhanna PA 18466 Quakertown PA 18951 Reading PA 19606 Salisbury PA 18103 Stroudsburg PA 18360 South Whitehall PA 18104 Topton PA 19562 Whitehall PA 18062 Bethlehem Twp PA18017 Coopersburg PA 18035