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The Pros And Cons Of Geothermal Heating

Geothermal Heat 

The Pros and Cons of Geothermal Heat

Geothermal energy provides so many benefits to people and their homes. They’re not only safe and healthy but they’re cost effective as well. This is the reason why the geothermal heating system is gaining popularity in the different parts of the globe and might even become the most preferred in the future.

Geothermal energy comes from the ground. When heat is at its peak during the summer months, the earth absorbs the heat and retains it even until the winter season. Underneath the earth, a temperature between 8 and 14 degrees Celsius is maintained the whole year through. And so with the use of a ground source heat pump, underground heat can be provided to your home at a very low cost without doing any harm to the environment. 

Heating system

A geothermal heating system is made up of pipes and a heat pump. Installing this type of heating system entails the digging of long trenches underground about two meter deep or the so-called vertical boreholes. Pipes are laid in these trenches to form a closed circuit filled with water which acts as the heat absorber. 

When water reaches the heat pump, the heat is further compressed to produce more heat and increase the temperature to a maximum of 50 to 55 degrees Celsius. The heat pump is similar to the size and shape of a small fridge and functions in the same way. 

The heat produced by the system can then be circulated throughout the home using an under floor heating system which operates at far lower temperatures compared to ordinary central heating units. 


This system can also be used together with a conventional immersion heater to increase water temperature for radiators or as a source of hot water for purposing of washing or bathing. 

Pros and cons

The foremost advantage of geothermal heating is its being environment-friendly. Its source of energy is natural, the heat from the underneath the earth, so there’s no worry about any hazardous effects to the surroundings unlike those that burn fossil fuels. There’s no tax imposed and there’s always constant supply.

Secondly, it’s efficient and cost effective. Being energy efficient means less electricity costs and this, in turn, leads to savings. Additionally, this is around 70 percent cheaper than heating a home using electric heating, oil or liquefied petroleum gas. 


A third benefit is its compact size. A typical geothermal heating using a heat pump is just about the same size as a small fridge and works in two ways – for both heating and cooling. 

Another advantage is its low maintenance. As natural ground energy is used, no hazardous chemicals are produced, no flammable oil, LPG or gas pipes, fuel tanks or chimney are used. No regular servicing or yearly checks are required. 

On the contrary, some disadvantages found for this system include the use of refrigerants. Refrigerants as well as the electricity to power the heat pump are not totally eco-friendly. 


Wide space and long pipes are also needed to lay the pipe system in trenches which means it is not ideal for suburban neighborhoods which are densely populated. The pipes may prove difficult to repair as they’re underground. 

Lastly, for areas that need vertical installation of pipes, drilling may be a hard task and a big rig is even required. 


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Solar Heat

Solar HeatSolar heating means utilizing the sun’s thermal energy to provide space heating and hot water to homes and buildings. With a natural source of energy, this type of heating system has major benefits to homes

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Radiant Heat

Radiant HeatThis heating system works by providing heat directly to the floor or panels in the wall or ceiling. Radiant heating from the floor is known as radiant floor heating or simply floor heating and has actually three types 



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Hydronic Heat

Hydronic HeatHydronic heating refers to the use of water as the medium in transferring heat in heating and cooling systems. It is sometimes called in-floor or in-slab heating. This type is one of the oldest and most commonly used heating systems 

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Geothermal Heat

Geothermal HeatGeothermal heating systems are also known as ground-source heat pumps that draw a steady supply of heat energy from the soil and move it through a home or building.

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