Homeowners – Case Stories


Thermia customers tell their stories

  • After carefully examining all available options, the homeowner decided on Thermia. The system proposed by Atlas Trading was based on the Thermia Diplomat Optimum G3 8kW ground-source heat pump with passive cooling module and met all the project requirements.

    Performance that speaks for itself

    The investor was building a new house and decided to use a renewable energy source. The house has a living area of 235 m² and is located in the town of Domžale, central Slovenia, around 15 minutes from Ljubljana and the same distance from the Alps. The homeowner was very well informed about different types of renewable energy sources, as well as about the energy demand of his new home. The basement features a home spa with sauna, fitness machines and a Jacuzzi, which requires heating throughout the year.

    “…we ultimately succeeded in satisfying the homeowner and providing all the requested functions. Moreover, when we measured the SPF again three years later, it was 4.17 – the perfect result.” – Yasin Jodeh, Technical Manager, Atlas Trading d.o.o.

  • Tormod Heldal is delighted with both the Thermia heat pump and TPA Plumbing Service: “The Atec heat pump is significantly better than the old heat pump. After the first winter of operation, our energy consumption halved and, most importantly, it is significantly quieter than the heat pump we installed when the house was built."

    50% reduction in energy consumption

    In 2004, the Heldal family moved into a newly built detached house on Fana in Norway. The detached house has a total living area of 235 m²,, with 191 m² on the ground floor and 44 m² on the first floor.

    “We chose Atec due to its impressive operating record and received excellent help from Thermia’s representative” – Tormod Heldal

  • The Gjefsen family chose a geo-thermal heat pump for their new house. Explaining their decision, they cited two deciding factors: first, that winter temperatures in this part of Norway can fall as low as minus 25 degrees Celsius and secondly, that electricity prices are set to fluctuate considerably over the next 30 years. Now, they will be able to enjoy free heat without worrying about rising energy prices.

    Economists spot a smart long-term investment

    Detached house: Wooden house built in 2012
    Living space: 250 m²
    Location: Brandbu, Norway
    Occupants: Two adults and two children
    Heat source: Borehole
    Heat pump: Thermia Diplomat

    ”Compared to some alternatives, this choice may seem a little more expensive. However, the long term returns are worth it. We have chosen a heating solution that is basically climate neutral" - Camilla and Thor Erik

  • The housing envelope and infrastructure has been planned with a green and nature-friendly bias. All the homes are well insulated, fitted with triple-glazing in plastic frames for low heat transfer. The homes are all equipped with Thermia Diplomat or Thermia Diplomat G3 ground source heat pumps with integrated hot water tanks. Renewable energy comes from a ground collector – a horizontal loop buried about 1,5 meter below the surface. 'All tenants will benefit from the renewable heating system' – says Toomas Kibus, head of renewable energy & heating at Airwave,

    Low carbon heating

    Uuesalu, a residential area is located just 8 km from the city center of Tallinn. Domestic bliss, tranquility and friendly locals are only a few of the keywords conveying the atmosphere of the Uuesalu residential area. It is very
    popular among young people and families with children, as the area has private and spacious sized housing, plenty of greenery and a well thought out infrastructure.

    '...looking at the pictures of the houses – we were immediately smitten! Impressed by not only the architecture and the choice of materials, but the geothermal heating...' says Stanislav Kalov, whose family was the first client for the Uuesalu Kodu development.

  • Today the situation has dramatically changed. In spite of growing teenagers with their frequent training, the lack of hot water is nothing but a memory. The family counts on savings of at least 30 000 SEK annually. To begin with, the family contacted many different sales representatives. When they chose Thermia, it took less than three weeks for everything to be installed and ready for use.

    Plenty of hot water for the whole family

    Soaring utility bills and constant problems with lack of hot water were the main reasons why the Wigren-Jakobssons switched to geothermal heating. Access to hot water is an important aspect of daily logistics in any big family.

    Access to hot water is an important aspect of daily logistics in any big family.

  • Their new heat pump is a Diplomat Optimum G3, which is the newest on the market and which was exactly what the couple requested. Obviously the environmental aspect was important. The couple thinks that the best feature of their heat pump is that it is quiet and maintenance-free.

    33 trouble-free years

    After 33 trouble-free years with their first heat pump, the Josefssons are looking forward to more of the same with their new heat pump.

    Everything has worked perfectly throughout all these years. My wife and I are extremely happy and we will never change our heat source.”

  • When the Carlsson family moved in to their new home, they were using an oil-fired boiler and a pellet stove to heat the house. The boiler was approaching the end of its working life and the pellet stove required a lot of attention.

    The Carlsson Family

    When the Carlsson family moved in to their new villa, they were using an oil boiler and a pellet stove to heat the house.

    "…we wanted to simplify our daily life. That is why we wanted to have a heating system that would take care of itself as much as possible. And we don’t need to do anything with our heat pump…" Mattias Carlsson

  • Energy consumption for heating purposes dropped to 2847 kWh and the heat delivered to the house was 9373 kWh, so 70 % comes from thin air and is renewable energy. CO2 emissions, originally 4 240 kg dropped to 2 070 kg, this is a massive 51 % reduction (2,170 kg CO2).

    Thermia Atec – The choice of professionals

    Günter Oldigs is a consultant certified and authorized by a number of different German energy agencies and associations, including BAFA, DENA, DEN e.V. and GIH-Nord e.V. He advises homeowners and builders about the possibilities of energy saving, optimal energy use, environmentally friendly energy carriers and the selection of suitable equipment, systems, building materials and measures.

    True performance, measured day by day speaks for itself

  • .With Atec, Thermia’s air-source heat pump, this Slovenian family is able to save up to 2,000 Euros every heating season.

    Outstanding heating efficiency

    The old oil-fired heating system was replaced with a Thermia Atec 13 air-source heat pump. In addition to the heat pump, an indoor “Plus” kit was installed –comprising a 3-15 kW electric auxiliary heater, Class A circulation pump and 3-way valve – as well as a 300-liter domestic hot water tank. The owner decided to remove the old solar installation and use the heat pump as the only source of heating and domestic hot water for the house.

    With Atec, Thermia’s air-source heat pump, this Slovenian family is able to save up to 2,000 Euros every heating season.


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