Thermia Atec

    • Reduce your energy consumption by up to 75%
    • Efficient energy savings at temperatures as low as -20 °C
    • Low sound level
    • Flexibility – three different indoor packages: Standard, Plus and Total
    • One solution for heating and domestic hot water that also supports optional cooling and pool heating
    • Online – control your heat pump from anywhere

Energy class when the heat pump is part of an integrated system, such as Atec 11 for low temperature applications


Energy class when the heat pump is the sole heat generator



  • Efficient performance in all seasons

    Efficient performance in all seasons

    With an impressive coefficient of performance (COP) of 4.7 (Atec 11 at A7/W35 according to EN14511), Thermia Atec offers maximum energy savings. COP is a measure of heat pump efficiency and indicates the relationship between the amount of energy produced and the amount consumed. The higher the number, the better the system.

  • Heating


    Most common European heating systems are water-based, with heating being distributed via radiators or hydronic floor heating. The output temperature of the water distribution system is usually 30-35°C for floor heating and 45-55°C for radiators. Thermia heat pumps offer a low-carbon alternative to traditional boilers in modern buildings, whether for new-builds or refurbishments and regardless of the temperature required in the heating system.

  • Cool in the summer

    Cool in the summer

    The heat pump provides heat during the winter while in the summer the process can be simply reversed. The heat pump now collects heat from the house and – via a refrigeration process and compressor (the same technology used in your refrigerator) – removes it to provide cooling. In this way, Atec can also provide efficient cooling for your home during the summer.

  • Cascade function

    Cascade function

    Thermia Atec is available in a range of output sizes and can be combined to provide power levels ranging from 6 to 36 kW. A single control unit switches two Atec heat pumps on and off in sequence, optimizing efficiency and keeping costs as low as possible.

  • More hot water, faster (with Atec Total indoor unit)

    More hot water, faster (with Atec Total indoor unit)

    The integrated Tap Water Stratification (TWS) system – a patented Thermia technology that ensures extremely fast production of hot tap water – provides 15% more hot water significantly faster and at higher temperatures than traditional alternatives. In the TWS hot water tank, the hot water is led from the heat pump via a coil through the water that is to be heated. It provides more effective heat transfer and greater volumes of hot water.

    Thermia versus other brands in terms of hot water production:

    Thermia with TWS technology Typical traditional water heater
    • Recharging from 40°C to full load for a water heater using TWS technology: just 21 mins.
    •  Recharging from 40°C to full load for traditional water heater: 50 mins.
    • Time to fully recharge tank after peak consumption: 21 mins.
    •  Time to fully recharge tank after peak consumption: 50 min.



  • Intelligent control system

    Intelligent control system

    The controller coordinates and controls the heating system. Thermia heat pumps work with complete precision to give your home the best possible indoor climate at the lowest possible cost. Our controller is very easy to use.

    The controller displays visualized heat curves and, once it is set, you never need to think about it again. Raising or lowering the temperature can be achieved at the touch of a button.

  • Optimum technology

    Optimum technology

    Optimum Technology is a technology that constantly monitors your system and adjusts the pump’s performance accordingly. Speed-controlled Class-A circulation pumps guarantee that daily operation is always adjusted according to the user’s requirements and conditions. That means you can be sure your heat pump is always running at its most efficient level.

  • Flexibility


    Thermia Atec is available in five output sizes: 6 kW, 9 kW, 13 kW, 16 kW and 18 kW in both three-phase (400V) and single-phase versions (230V, only up to 16kW). Atec comes with a range of different indoor units, giving you complete flexibility to adapt the solution to your needs. You can choose from three versions of the indoor unit – Standard, Plus and Total – each with different features. The choice of unit is matched to the set-up of your heating system and ensures that you never pay for more than you actually need.

  • Low sound level

    Low sound level

    Acoustically engineered design makes Atec one of the quietest heat pumps on the market. Thanks to its excellent acoustic performance, the outdoor unit can be placed wherever is most convenient without worrying about sound affecting your neighbors, for example.

  • Thermia Online

    Thermia Online

    The Thermia Online app enables you to check that your heating system is working properly, reduce the temperature when you are on holiday, or receive a notification if anything unexpected comes up. Our online system provides installers with comprehensive diagnostics data and also enables them to respond promptly to notifications or access a live feed on system performance. The Thermia Online app is available for both Android and iPhone.

  • Pool


    Atec can easily be supplemented to heat your pool, all year round. In this way, you can enjoy your pool in all seasons while substantially reducing the cost of heating it.

  • The essence of Scandinavian design

    The essence of Scandinavian design

    Thermia Atec is built on 40 years of experience in developing and supplying heat pumps and has been one of Thermia’s best-selling products since its launch in 2011. Clean, Scandinavian design allows the product blend in with its surroundings. Atec’s sleek Scandinavian look makes it a subtle and elegant addition to your home.

Incredible, but true…

Incredible, but true…

The sun sends the earth 174,000 terawatts of free energy – every day.

It makes sense to use this gift of nature to heat and cool our homes.

Thermia customers tell their stories

  • Two housing associations from the Jesenice community committed themselves to reducing their heating bills. This is the story of how two independent residential buildings implemented the same solution for domestic hot water production.

    Thermia Atec slashes heating bills by up to 67%

    Jesenice is a Slovenian town located in the north of the country, close to the Alps and bordering Austria. It has a population of 13,000 inhabitants and is renowned as the Slovenian home of mining and iron forging.

    “Costs plummeted by 70% resulting in the original investment being recouped in just 3 years.” - Yasin Jodeh, technical manager at Atlas Trading d.o.o.

  • 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


If you have any questions please contact us

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Thermia Heat Pumps

Thermia Heat Pumps