Ground Source or Geothermal Heat Pumps.

You can cost-effectively cool or heat your property using the energy stored in the ground.

Conventional air conditioning and heating systems often have a lower initial financial outlay but have higher operating costs and are more prone to mechanical failures.

Automatic Heating now offers ground source heat pumps in our range of heating and cooling equipment. Explore our range of ground source heat pumps or calculate savings using the Earthlinked Technologies online savings calculator.

Learn all about this environmentally sustainable technology with our quick yet comprehensive guide below.

Ground Source Heating
You Can Use Ground Source Heating for Residential or Commercial Applications
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Ground Source Heating and Cooling. How Does it Work?

At approximately 6 meters below ground, the earth’s temperature remains relatively constant throughout the year. We can use this for both heating and cooling by using a ground source heat pump.

A water pump can move water against gravity (ie uphill) and a heat pump can move heat against a temperature gradient (ie from a colder environment to a warmer one). It’s the same principle that’s used in refrigeration – heat is taken from a cold place (inside the fridge) and distributed into a warmer place (the kitchen).

The beauty of using this to control an indoor climate is that it’s reversible; bring heat in when you want it during the winter and remove it when you don’t want it during the summer. The heat pump moves the heat around and the ground either supplies it or absorbs it as appropriate.

You can take advantage of this technology at home or in a commercial setting as it represents one of the most efficient solutions for internal climate control and water heating on the market.

While technology improves all the time and there is still a place for conventional and condensing hot water heating solutions, renewable and energy efficient methods are becoming increasingly sophisticated and popular. An environmental conscience need not be at odds with the commercial imperative any longer. Contact us with your requirements and we’ll walk you through the alternatives and show you just how much you can save in the long term. We think you’ll be surprised.

Geothermal or Ground Source?

Strictly, geothermal refers to the heat that is stored by the core of the Earth that remains from its formation, the same energy that produces volcanoes, geysers and hot springs. Geothermal power is electricity generated by using this heat in appropriate and convenient locations. In some parts of the world, this heat is harvested and used to directly warm buildings and the water supply but this is not the technology we are referring to here.

The heat that is utilized to provide the warming and cooling effect, in this case, comes mainly from the sun. The top few meters absorb thermal energy from the sun and due to the sheer bulk, retains it all year round. This process allows us to use a ground source heat pump for application in the home or business.


Attribute                        Advantage                            Result
1. Cheaper Savings over long term. Save up to 75% of your heating and cooling bill.
2. Efficient. Uses heat from the sun. Solar energy is the most efficient and cost-effective available.
3. Clean. No exhaust vents or ashes. Cleaner home or commercial environment.
4. Sustainable. Earth and solar sourced energy. Uses very little energy from nonrenewable sources.




Unobtrusive earthlinked technology provides the most environmentally sensitive heating and cooling system you could possibly imagine.

This technology can also be used to produce hot water and can even heat your swimming pool, producing savings across the board – upto 80% in some applications.

Heating and Cooling From 3 Main Components.

The whole ground source heat pump system is powered by three main constituent parts – earth loops, heat pump and an air handler.

Heat is collected or distributed (dependant on if your system is in heating or air conditioning mode) by resilient copper tubular loops that contain refrigerant for heat exchange. The heat pump then passes the thermal energy or cooling to be distributed. The air handling equipment passes cooling or heating via high quality filtered air that is passed to the rooms of the building through ducting.

This technology can also be used to produce hot water and can even heat your swimming pool, producing savings across the board – up to 80% in some applications. Cold water feed preheating and de-superheating options both utilise residual thermal energy to produce bonus hot water on top of the HVAC capabilities.

Earth Loops

The durability of the thermal exchange system is exemplary. In nearly 40 years since the first one went into active service, there hasn’t been a single failure due to corrosion. The loops are made from hard wearing copper tubing to ensure they serve you well into the future. Copper EarthLinked technology carries a 10 year anti-corrosion warranty and can be further bolstered with our Cathodic Protection System in very harsh ground conditions.

  • Extremely durable.
  • Pre-assembled and pressure tested.
  • Vertical, horizontal and diagonal installations.
  • Smallest footprint on the market.
  • Highest temperature differential.
  • Installed in 1 or 2 days.

The loops contain refrigerant and are technically part of the heat pump. The vapour-compression refrigeration cycle allows the movement of heat to and from the heat-sink which in this case is the earth.

Greenhouse Gas Reduction.

This means of heat management is far more environmentally friendly than conventional electrical resistance, natural gas or oil burning systems and will significantly reduce the carbon footprint of your home or business. A typical domestic installation of a Ground Source Heating, Ventilation and Air Conditioning system will produce less carbon dioxide than conventional methods.

Can Also Be Used For Hot Water.

You can get your hot water from this technology too. We heat water all year round and the residual thermal energy from earth sourced heating can save you money by improving the efficiency of your boilers. There are two ways to achieve this.

Full-Time Preheating.

The water can be preheated in a secondary tank to a predetermined temperature, this can be fed into the main tank and heated further by conventional methods if required. Since the temperature of the preheated water is much closer to the required output levels, the electric element needs to do less work which produces a saving of around 80%. You can use Earth Power for hot water all year round.

Desuperheating the Air Conditioning Mode.

During the warmer months when the system is producing a cooling effect on the air, the heat removed from the compressor can be used to augment the existing water heating system.