Geothermal heating in a housing company
Geothermal heat is the choice for a housing company that values sustainability and energy efficiency. Helen offers housing companies a geothermal heating solution either to be owned by the housing company or as a service with a monthly fee. A heat recovery system can be added to the geothermal heating solution, taking account of cost-effectiveness and the housing company’s needs.
Why geothermal heat?
Geothermal heat, i.e. geothermal energy, means energy that is stored in the bedrock, soil and waterways, which can be utilised in the heating, and also in cooling, of properties. The stored geothermal energy is renewable energy mainly originating from the sun, but it also includes heat rising from the Earth’s core. Geothermal heat is a long-term and ecological heating solution. When correctly designed, geothermal wells provide enough thermal energy for the entire life cycle of a housing company.
- Geothermal heat reduces the heating costs and the total service charges of a housing company
- Geothermal heat is environmentally friendly and self-sufficient energy production on the housing company’s own land
- Geothermal heat increases the property’s attractiveness and the market value of homes
- Heat recovery that is combined with geothermal heating enables efficient utilisation of all energy flows of the property and reduces the number of geothermal bore holes to be drilled.
The acquisition of a geothermal heating system has many phases that are significant for housing companies, and Helen provides support for the housing company every step of the way. With a high-standard survey and planning, the new geothermal heat system of the housing company will start producing ecological heating energy about 12–20 weeks from placing the order. A more detailed description of the different stages of installing geothermal heating is available in the buyer’s guide to geothermal heating.
Offer and order
Plans and permits
Well drilling and installation of equipment
Installation of equipment and dismantling of previous system
Commissioning and adjustment of the system
Handover and instruction for use
Warranty period and monitoring and maintenance service
Two ways to acquire geothermal heat
Own geothermal heat
A geothermal heating system tailor-made for housing companies as a ready-for-use delivery with a contract price. The geothermal heating system can be implemented with or without heat recovery, depending on the housing company’s needs. We offer monitoring and maintenance security as an extra service.
Geothermal heat as a service
Geothermal heating with a service model where Helen is responsible for the implementation and operation of the entire solution for a monthly fee. Predictable costs mean a worry-free investment and easier budgeting for a housing company as there will be no loan burden. Heat recovery can be included in the solution, depending on the housing company’s needs.
Monitoring and maintenance service
With the monitoring and maintenance service, Helen’s experts are at your disposal to ensure that the housing company’s own geothermal heating system operates well in any situation. Our experts monitor the system remotely throughout the day and night, which means that any fault situations are remedied in no time at all. With annual maintenance carried out by professionals, you will take good care of the housing company’s system and will be informed of any repair needs well in advance.
Frequently asked questions about geothermal heat
The price of a geothermal heating system is determined on the basis of the housing company’s specifications, such as the annual heating energy need, the required geothermal wells, the available land, and the housing company’s technical facilities. Read more about pricing here.
Geothermal heat is heat stored in the top layers of the earth and bedrock, which can be utilised in the heating of indoor spaces and service water of the housing company.
Geothermal heat with heat recovery is a solution where the heat recovery equipment installed in the extractor fans act as the heat source of the building in support of geothermal heat. When heat recovery is used in addition to geothermal heat, the various energy flows of the property can be utilised efficiently, which improves the energy efficiency of the entire building. In addition, the heat recovery system reduces the number of geothermal heat boreholes to be drilled, due to which the geothermal heating solution can also be implemented for apartment blocks standing on a smaller plot.
We offer both geothermal heating and geothermal heating with heat recovery as an investment and as a service with a monthly fee.
The life cycle of a property’s heating solution is normally 20–30 years, after which the connected equipment must be replaced either in part or in full. In connection with the replacement, it is time to assess the most suitable heating solution for the housing company. If the property’s heating system has only recently been replaced, it may not be justified to change the heating method.
Always use the help of an expert to find out whether geothermal heat is suitable for your housing company. For example, Helen can carry out this survey free of charge. The most important criteria in terms of suitability are the sufficient size of the plot, the thermal properties of the bedrock, and the special characteristics of the heating in the property itself.
In the location and drilling of geothermal wells, you need to take into account the regulations of the local authority concerning the minimum distances of the well to buildings, plots and common areas. Also take into account the underground plan of the property, tunnels or various main pipelines running under the plot when assessing the suitability of the system. If geothermal wells are located in a rented plot, a written permit is required from the owner.
Inside the property, the location and size of the technical facility for the new heat pump system, the sufficient capacity of the electricity connection and electrical centres, and the options for heat recovery must be taken into account.
Geothermal heat is not suitable for all properties, and therefore the alternatives must always be assessed separately for each property. Helen offers housing companies the best heating solution for their exacting needs.
Make sure that the supplier has previous experience in delivering geothermal heat to housing co-operative sites. Also check that the supplier is a financially sound operator whose warranties will remain in force. Also find out whether the supplier is capable of offering monitoring and maintenance services for the heating solution.
Helen is a reliable energy expert with over one hundred years’ experience. We can offer you a suitable solution for the individual needs of your housing company. Our solid expertise and extensive range enable high-standard, comprehensive service throughout the year. Get in touch and together we can survey the needs of your housing company and find a suitable heating solution for you.
The correct size of the system is of utmost importance. When making the selection, it is necessary to use the property’s thermal energy need based on measurement data, as well as an estimate of hot service water consumption. The most common mistake is to choose a heat pump that is too small or to design the well field with inadequate capacity. It is both difficult and expensive to correct the error retrospectively. In the sizing of the heat pump, it is necessary to take into account the power demand of the property so that the heat pump is not sized too small or large. It is also worth checking the temperature levels of the property’s heating network as they have an impact on the selection of heat pumps. Low temperature levels are favourable to heat pumps.
The number and drilling depth of geothermal wells are calculated according to the energy demand of the site. The distance between the wells is normally 15–20 metres, which means that the wells produce a sufficient amount of energy throughout their life cycle. Safety distances to buildings must also be taken into account. The depth of the wells is usually between 200 and 400 metres.
The sizing of the system should be carried out by a professional to make sure that the system produces a sufficient amount of heat throughout its life cycle. Professional suppliers carry out a computer simulation of the amount of heat obtained from the bedrock to ensure that the well field will not cool down prematurely.
The sufficiency of the property’s electricity connection must also be ensured in connection with the sizing.
It is worth comparing the warranty periods and terms. Make sure that there is at least a two-year warranty for the entire contract and its equipment. The system parts may also have extended warranties, i.e. the heat collector circuit of the heat wells may have a 10-year warranty and heat pumps a factory warranty of up to 6 years.
Please check the following:
Has the offer taken into account the sufficient capacity of the property’s electricity connection and the need to modify the main and distribution boards, as well as their costs?
What is the amount of electricity required by the heat pump equipment and what are the total costs. Does the offer also include a new, favourably priced electricity contract?
Does the offer include obtaining the necessary permits and the removal of the old heating solution?
Does the site’s profitability calculation or offer include replacements of the compressors of geothermal heat pumps?
Does the offer include restoration of the plot to the original condition (e.g. tarmacking and replanting) and the removal of waste material?
Make sure that the offers you have received are comparable with each other, for example, in terms of the heat pump capacity and the depth of wells. It is easiest to compare the overall offers when the different equipment, work phases and responsibilities of the parties are clearly listed in them.
Significant cost factors include the price of the total contract, i.e. the investment, the cost of electricity used by the heat pumps, remote control and annual maintenance costs, and the replacement of compressors. The repayment period and the savings gained are also affected by the trend in the market prices of energy. Always compare the annual savings to the current price level, after which the prices can be compared +/-2% in each way. Also remember to take into account the housing company’s loan management fees and the total impact on maintenance charges.