Lambda Heat Pumps

EUREKA Air Series

LAMBDA Heat Pumps is a multi-award-winning technology leader in energy-efficient air-source heat pumps. Our product range stands for innovation, quality, and sustainability—it heats and cools efficiently, reduces energy costs, and protects the environment. The Eureka-Luft series saves up to 30% in operating costs compared to the highest energy efficiency standard, A+++, making it more efficient than 97% of all ground-source heat pumps.

About the heat pump
Lambda Principle

Energy Efficiency - The 3K Process® as the Industry Standard

The successful implementation of the 3K Process® for heat pumps has marked a quantum leap in the industry. As a result, LAMBDA heat pumps are among the most energy-efficient in their class. Thanks to optimized and patented fluid dynamics, we have succeeded in significantly improving heat transfer → by a factor of four to six.

About the LAMBDA Principle
Applications

High temperatures for new construction and existing buildings

Not just for new construction our heat pumps are designed for operating temperatures of up to 70°C. This allows us to ensure effective thermal protection against Legionella, a higher efficiency for your PV system, and high flow temperatures in existing buildings.

How it works
Lambda Sustainability

Natural refrigerant propane (R290)

For us, sustainability isn’t just about developing highly efficient heat pumps; it’s also reflected in our consistent use of the natural refrigerant propane (R290). With a Global Warming Potential (GWP) of just 3, we’re not only saving you money but also helping to protect the climate. By comparison, the widely used refrigerant R410a has a GWP of 1920.

on sustainability
Lambda Heat Pumps

EUREKA Air Series

mehr anzeigen

LAMBDA Heat Pumps is a multi-award-winning technology leader in energy-efficient air-source heat pumps. Our product range stands for innovation, quality, and sustainability—it heats and cools efficiently, reduces energy costs, and protects the environment. The Eureka-Luft series saves up to 30% in operating costs compared to the highest energy efficiency standard, A+++, making it more efficient than 97% of all ground-source heat pumps.

About the heat pump
Lambda Principle

Energy Efficiency - The 3K Process® as the Industry Standard

mehr anzeigen

The successful implementation of the 3K Process® for heat pumps has marked a quantum leap in the industry. As a result, LAMBDA heat pumps are among the most energy-efficient in their class. Thanks to optimized and patented fluid dynamics, we have succeeded in significantly improving heat transfer → by a factor of four to six.

About the LAMBDA Principle
Applications

High temperatures for new construction and existing buildings

mehr anzeigen

Not just for new construction our heat pumps are designed for operating temperatures of up to 70°C. This allows us to ensure effective thermal protection against Legionella, a higher efficiency for your PV system, and high flow temperatures in existing buildings.

How it works
Lambda Sustainability

Natural refrigerant propane (R290)

mehr anzeigen

For us, sustainability isn’t just about developing highly efficient heat pumps; it’s also reflected in our consistent use of the natural refrigerant propane (R290). With a Global Warming Potential (GWP) of just 3, we’re not only saving you money but also helping to protect the climate. By comparison, the widely used refrigerant R410a has a GWP of 1920.

on sustainability
Installation partners near you

Find an installation partner for LAMBDA heat pumps

Are you looking for an installation partner near you who can install our LAMBDA heat pumps? Use our new Partner Finder to find the installer nearest you right away.

Frequently Asked Questions

LAMBDA heat pumps are sold through our authorized dealers. 

You can search for a specialist partner using our Partner Finder. If that doesn’t work, please feel free to contact us via our contact form or by email.

Despite significantly higher efficiency, LAMBDA heat pumps are priced at roughly the same level as similar competing products. This outstanding value for money stems from the high heat transfer achieved through the 3K process, which has allowed us to keep material costs for air heat exchangers relatively low. Furthermore, our motto is: More machine, less housing. We prefer to invest in high-quality, well-dimensioned refrigeration circuit components rather than in expensive designs.
When comparing products, the model designation is often misleading. The model designation of our heat pumps is based on the maximum output at an outdoor temperature of -10°C. For most other heat pump manufacturers, the model designation corresponds to the maximum output at an outdoor temperature of 2°C or 7°C.

The ideal installation location for an air-source heat pump depends on several factors.
The following points should be considered when selecting an installation location for an air-source heat pump: 

  • Compliance with safety zones (e.g., no basement shafts or ignition sources within a 1-meter radius)
  • Free air circulation (avoidance of niches, obstacles, depressions, and obstructions in front of the heat pump, etc.) to ensure efficiency and reduce noise
  • Connection lines to the boiler room should be as short as possible
  • Accessibility for servicing
  • Noise pollution (compliance with required distances to neighboring properties based on noise calculations, distance from bedroom windows or quiet areas)

Yes! LAMBDA heat pumps offer a wide range of hydraulic systems and accessories.
These include solutions that are perfectly tailored to our heat pumps, such as buffer tanks, hygiene tanks, domestic hot water tanks, combination tanks, and fresh water systems.

NEWS

Switch to our LAMBDA heat pump today—and secure up to €15,825 through generous federal incentives combined with applicable state incentives!

NEWS

How to winterize your LAMBDA heat pump: Cleaning, heating system pressure, automatic mode, and more. For maximum efficiency during winter operation.

NEWS

On October 8, 2025, LAMBDA was once again awarded second place in the Large Enterprises category at the Tyrolean Austrian Leading Companies Award—for…

NEWS

The refrigerant is a special substance that evaporates at very low temperatures, thereby transferring heat. It is the heart of every heat pump.

LAMBDA gewinnt den Klimaschutzpreis
NEWS

LAMBDA Wärmepumpen GmbH, based in Kirchbichl, was awarded the first Tyrolean Climate Protection Prize in the business category. The award ceremony…

NEWS

The LAMBDA group of companies is growing: With the full integration of Energiereform GmbH & Co. KG, a significant step has been taken toward expanding…

NEWS

Our proprietary hydraulic solution combines all key components into a single compact unit: a 250-liter hot water tank, a 100-liter buffer tank, a…

NEWS

This year, we at LAMBDA have decided to celebrate the holiday season in the spirit of community and compassion.

NEWS

As part of this year’s Change Summit, which took place for the first time on the “MS Achensee,” the Tirol Change Award was presented for the fifth…

NEWS

The Tyrolean company LAMBDA Wärmepumpen was awarded second place in the “Large Companies” category at the 2024 Austrian Leading Companies Award Tyrol…