GEOexchange Heating and Cooling Sydney
GEOexchange systems require little maintenance. When installed properly, which is critical, the buried GEOthermal ground piping loop can last for generations.
How Geoexchange Works
Geoexchange heating and cooling systems are always comfortable, yet the heating and cooling system is out of sight, performing efficiently without extensive maintenance or knowledge on the part of the homeowner. Geoexchange heating and cooling takes advantage of stable subterranean temperatures to provide efficient heating in winter and cooling in summer.
Outdoor temperatures fluctuate with the changing seasons however underground temperatures don’t change as dramatically, thanks to the insulating properties of the earth. One to two metres below ground, temperatures remain relatively constant year-round.
A geoexchange system, which typically consists of an indoor ground source heat pump and a buried system of pipes, called a ground loop, pond loop or reinjection well, capitalizes on these constant temperatures to provide “free” energy.
The pipes that make up a ground loop are made of polyethylene and can be buried under the ground horizontally or vertically, depending on the characteristics of the site
If an aquifer is available, engineers may prefer to design an “open loop” system, in which a well is drilled into the underground water.
Water is pumped up, run past a heat exchanger, and then the water is returned to the same aquifer, through “reinjection.”
In winter, fluid circulating through the system’s ground loop or well absorbs stored heat from the ground and carries it indoors. The indoor unit compresses the heat to a higher temperature and distributes it throughout the
Ground source heat pumps have efficiencies rated according to their coefficient of performance, or COP. Ground source heat pumps have COPs of 3.0 to 5.0. This means for every unit of energy used to power the system, three to five units are supplied as heat.
About the GEOexchange Process
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Geoexchange systems require little maintenance. When installed properly, which is critical, the buried ground loop can last for generations. The unit’s fan, compressor, and pump are housed indoors, protected from the harsh weather conditions, so they tend to last for many years, often decades
What maintenance do GEOexchange systems need?
Usually, periodic checks and filter changes and annual coil cleaning are the only required maintenance
How important is correctly sizing the system?
In the past, some improperly sized systems did overheat or
Is GEOexchange just for heating?
Geoexchange systems work just as effectively in cooling and can be engineered and designed to deliver comfortable and discreet supply and return air registers comparable to conventional AC systems.
Other than heating where else can GEOexchange help?
Is GEOexchange really cost effective?
Geoexchange HVAC systems remove four times more kilowatt-hours of consumption from the electrical grid per dollar spent than photovoltaic and wind power add to the electrical grid. Those other technologies can certainly play an important role, but
Is GEOexchange noisy? Will I hear it?
Ground source heat pumps run very quiet and there is no equipment needed to be installed outside eliminating the need for large “outdoor units” and acoustic constraints as such with conventional air conditioning systems.
What is the expected life of a GEOexchange system?
Ground loops can last for generations. Ground source heat pumps typically lasts decades, since it is protected indoors. When it does need to be replaced, the expense is much less than putting in an entire new
Unit 9/189 Port Hacking Rd, Miranda NSW 2228
PO Box 396, Miranda NSW 1490