Ground Source Heat Pump — an energy-efficient heating solution for the long term
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20+ years of experience
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Who is geothermal heating suitable for?
A ground source heat pump is a long-term investment that is particularly well-suited to the following situations and property types.
Maximum long-term savings
You want the lowest possible running costs over the decades.
Switching from oil heating
You want to move away from fossil fuels entirely.
Large detached house
Plenty of square metres to heat — the savings potential is substantial.
New build
You are planning an optimal heating system from the ground up.
Plot suitable for a borehole
There is sufficient space and permissions for drilling on the property.
Housing company joint project
A shared geothermal system for multiple units splits the costs.
Choosing geothermal doesn't feel like a decision
A sensible choice
Behind the decision is often a desire to create a permanent heating solution for your home — one you don't need to reconsider every winter.
A lasting solution
Once a ground source heat pump is in place, your heating is sorted for the long term — no need to plan the next major renovation for years to come.
Invisible everyday comfort
The system takes care of heating and hot water in the background — you can focus on other things around the home.
Geothermal investment cost and payback period
A ground source heat pump requires a larger upfront investment, but running costs are extremely low. The typical payback period is 5-10 years.
Small detached house
Smaller property (80-120 m²)
15 000 - 20 000 €
- 1 borehole (100-150 m)
- 5-8 kW ground source heat pump
- Hydronic heating
- Domestic hot water heating
Medium-sized house
Typical detached house (120-200 m²)
20 000 - 28 000 €
- 1-2 boreholes
- 8-12 kW ground source heat pump
- Underfloor or radiator heating
- Up to 70% savings
Large property / housing company
Large house or joint project
28 000 - 35 000 €
- Multiple boreholes
- 12-20 kW output
- Comprehensive system design
- Long-lasting investment
Prices are indicative and include the borehole, equipment, and installation. The exact price depends on the property — request a free estimate!
Why choose our geothermal installation?
Save 50-70% on heating costs
A ground source heat pump significantly reduces your heating bill compared to oil, electric, or gas heating. The typical payback period is 5-10 years.
Environmentally friendly renewable energy
Geothermal heating harnesses the earth's thermal energy and produces no operational emissions. At the same time, it raises your property's energy rating and value.
Maintenance-free and long-lasting
A geothermal system lasts for decades with minimal maintenance. The borehole lasts over 50 years, the heat pump 15-20 years. No regular refuelling required.
Trusted partner network
Our expert network consists of certified geothermal installers and manufacturer-authorised partners. This ensures a high-quality installation and valid manufacturer warranties.
How it works
A simple and clear process for professional renovation
Get in touch
We assess your heating needs, plot suitability, and the number of boreholes required.
Free estimate
You receive a clear, itemised quote covering the borehole, equipment, and installation.
Professional work
Drilling, equipment installation, and pipework carried out by skilled professionals.
Completed project
System optimisation, commissioning, and user guidance. We provide ongoing support as well.
What our customers say
Read experiences from our geothermal customers
Juha N.
2 kuukautta sitten
Maalämpö oli iso investointi, mutta säästöt näkyvät selvästi. Lämmityskulut putosivat yli 60%. Erinomainen valinta!
Anneli K.
1 kuukausi sitten
Porakaivo ja maalämpöpumppu asennettiin ammattitaidolla. Projekti sujui aikataulussa ja lopputulos on loistava.
Risto M.
3 viikkoa sitten
Öljylämmityksestä maalämpöön – paras päätös mitä olemme tehneet. Luotettava ja energiatehokas ratkaisu.
See also
Guides and more about ground source heat pump
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Read guideWe serve across Finland
We help with geothermal heating system design and installation across the Helsinki metropolitan area. Get in touch and we'll tell you more!
Everything you need to know about geothermal heating
Geothermal heating is Finland's most efficient form of heating — it harnesses the earth's consistent thermal energy and offers the lowest running costs over the long term. On this page, we explain how a ground source heat pump works, who it is suitable for, what it costs, and how the installation process proceeds.
Why choose geothermal heating?
- **Lowest running costs** — Up to 60-70% savings on heating expenses compared to electric or oil heating
- **Long lifespan** — A ground source heat pump lasts 15-25 years; the borehole can last up to 100 years
- **Works in all conditions** — Ground temperature remains constant all year round
- **Environmentally friendly** — A renewable energy solution that significantly reduces your carbon footprint
- **Increases property value** — A geothermal system raises the value of your property
How does geothermal heating work?
A geothermal heating system extracts thermal energy from the ground via a borehole or ground loop. The bedrock temperature remains at approximately +5-10 degrees Celsius all year round, providing a consistent energy source. The ground source heat pump raises the temperature sufficiently for hydronic heating and domestic hot water. The system's coefficient of performance (COP) is typically 3-5, meaning that for every kilowatt of electricity consumed, you receive 3-5 kilowatts of heat.
Geothermal heating prices 2026 — what does the investment cost?
The cost of a geothermal heating system depends on the property size, number of boreholes, and scope of installation. Typical prices in the Helsinki metropolitan area:
- **Small detached house (80-120 m²):** €15,000-20,000 — 1 borehole (100-150 m), 5-8 kW ground source heat pump
- **Medium-sized house (120-200 m²):** €20,000-28,000 — 1-2 boreholes, 8-12 kW ground source heat pump
- **Large property / housing company:** €28,000-35,000 — multiple boreholes, 12-20 kW output
Borehole or ground loop?
**Borehole** is the most common solution — vertical drilling into bedrock requires little space and is suitable even for smaller plots. A typical borehole is 100-200 metres deep. **Ground loop** is a horizontal piping system laid underground, typically at a depth of 1-2 metres. It requires a larger plot (at least 500-1,000 m²) but is less expensive to install. We help you choose the right solution based on your plot and heating requirements.
Ground source heat pump vs. air-to-water heat pump
An air-to-water heat pump requires a smaller upfront investment (€8,000-18,000) but running costs are slightly higher. A ground source heat pump offers the lowest running costs and the most consistent performance, but the upfront investment is larger. If you are planning to live in the property long-term and want to minimise heating costs, geothermal is the better choice. If your budget is limited or a borehole is not feasible, an air-to-water heat pump is a sensible alternative.
Myths and facts about geothermal heating
There are many misconceptions about geothermal heating that no longer hold true. Here are a few common claims and what the reality looks like with today's technology.
**Claim: Geothermal heating is only for large houses.** Fact: A typical detached house also benefits significantly. What matters is energy consumption, not just the number of square metres.
**Claim: Drilling ruins the garden.** Fact: Drilling is completed in a matter of days and the garden is restored. The boreholes do not restrict use of the garden.
**Claim: The system is complicated to use.** Fact: Day-to-day use is simple — set the temperature once and the system takes care of the rest.
Geothermal heating for a detached house
Geothermal heating is an excellent choice for detached houses where a long-term, energy-efficient heating solution is desired. It is especially worthwhile for larger houses where heating costs are significant. Geothermal is suitable for both new builds and renovations — an existing hydronic heating system can be connected directly to a ground source heat pump.
Geothermal heating for a housing company
In a housing company, the savings potential of geothermal heating is substantial because there are many square metres to heat. A joint project splits the upfront investment among the residents, and maintenance charges can decrease significantly. We help housing companies design a geothermal system that efficiently serves the entire property.
Geothermal heating and the household tax deduction
The installation work for a geothermal heating system qualifies for the household tax deduction. In 2026, the deduction is 35% of the labour portion, up to a maximum of €1,600 per person per year (excess €150). Borehole drilling does not qualify for the deduction, but heat pump installation work does. We itemise the labour and material portions in the quote. Learn more from the household tax deduction calculator.
Geothermal as a replacement for oil heating
Geothermal heating is an excellent solution for replacing oil heating. An existing hydronic system can be connected directly to a ground source heat pump, and the oil boiler is decommissioned. Savings compared to oil heating can be 60-70% per year, and you get rid of the oil tank along with its associated maintenance costs and environmental risks.
We operate in the Helsinki metropolitan area
We handle geothermal heating system design and installation in Helsinki, Espoo, Vantaa, Kauniainen, Kerava, Järvenpää, and Kirkkonummi. We are familiar with the local bedrock and building stock, and we can assess the feasibility of a borehole for each property.
Other heat pump options
If geothermal heating is not suitable for your property or your budget is limited, explore other options: Air-to-water heat pump (lower upfront investment, no drilling) or Air source heat pump (quick and affordable supplementary heating). We help you compare the options and choose the right solution.
Request a free geothermal estimate
Get in touch and tell us about your property. We assess borehole feasibility, calculate energy savings, and prepare a quote. You will receive a clear overview of the geothermal investment and payback period.
Frequently asked questions
Find answers to the most common questions here. Don't hesitate to contact us if you can't find an answer!
Didn't find your answer?
Contact us →Request a geothermal heating quote
Considering geothermal heating for your home or housing company? Tell us the basic details of your property and we'll prepare an indicative quote for the geothermal investment.