Air-Source Heat Pumps
As the critical first link in the heat pump chain, Güntner's heat collector maximizes evaporative efficiency and low-temperature viability — shaping system-wide COP from the very first stage.
WHAT’S AT STAKE FOR AIR-SOURCE HEAT PUMPS
In air-source heat pumps, heat collector performance shapes real-world efficiency, cold-climate capability, and defrost behavior — defining system success from the very first stage
Seasonal Efficiency (SCOP)
Real performance across all operating conditions drives operating cost — not just a single lab COP value.
Cold-Climate Evaporation
Low-temperature efficiency defines winter performance and system reliability.
Frost & Defrost Management
Optimized defrost behavior ensures continuous heat extraction and stable operation even in winter.
RIGHT FROM SPECIFICATION
Heat collector decisions made early define real-world performance. Güntner supports design from the initial concept phase to address critical air-side factors:
Ambient conditions and low-temperature evaporation
Installation layout (distance, height, surroundings)
Air circulation strategy (blow-through vs. draw-through)
Frost and defrost strategy
These parameters directly impact field performance beyond lab conditions.
ENGINEERED FOR REAL-WORLD PERFORMANCE
True performance is defined not in ideal conditions, but in the field. Under real operating environments including wind exposure, air recirculation, frost formation, and installation constraints maintaining stable and reliable performance requires more than standard design approaches. Güntner heat collectors are developed with a clear focus on these real-world challenges:
- Wind stability — Optimized airflow design supports uniform evaporation and consistent operation, even under varying wind conditions
- Controlled air management — CFD-based layouts reduce recirculation effects and support stable thermal performance
- Frost management — Carefully engineered fin geometry, coatings, and coordinated defrost strategies help maintain longer operating cycles and faster recovery
- Proven reliability — Validated through laboratory testing and demonstrated across diverse climates worldwide
The result: consistent seasonal performance (SCOP) that aligns with design expectations — delivered in practice, not only in theory.
SUSTAINABILITY – ACCELERATING DECARBONIZATION
Heat pumps already play a key role in energy transition. Güntner enhances this impact with natural refrigerant solutions:
CO₂, NH₃, and propane (R290) systems enable low-GWP operation
CO₂ systems support high pressures up to 130 bar
Efficient heat extraction even at -25 ℃ conditions
This allows high efficiency without compromising environmental targets.
WHY GÜNTNER HEAT COLLECTORS
PROVEN IN CO₂
Design pressure up to 130 bar — validated in multiple transcritical CO₂ heat pump projects.
QUIET & SAFE
Low-noise operation, optimized airflow, safe handling, and corrosion protection for installations close to inhabited areas.
MULTI-REFRIGERANT READY
Engineered for a wide range of working fluids — NH₃, CO₂, propane (R290), and glycol — without compromising evaporative efficiency.
WIDE MODEL RANGE
Flat, vertical, and V-shaped designs suit any installation site — from compact rooftop setups to large district heating fields.
AIR SOURCE HEAT PUMP HEAT COLLECTORS
Our heat collector portfolio is engineered for low-temperature evaporation, continuous operation, and natural refrigerants — keeping heat pumps stable and efficient across all seasons.
Vertical COMPACT Dry Cooler
With its slim design, the Vertical COMPACT Dry Cooler is ideal for use in commercial HVAC and can be installed in a variety of applications.
Vertical VARIO Dry Cooler
The Vertical VARIO Dry Cooler's robust design can withstand all weather conditions, including heavy snow and wind loads. The dry cooler has a small footprint too, which saves on space.
Flat COMPACT Dry Cooler
Optimized for use in commercial HVAC, the Flat COMPACT boasts a slim, horizontal design so it can be used for a wide range of applications.
Flat VARIO Dry Cooler
The Flat VARIO’s robust, horizontal design means you don’t have to worry about building regulations and height restrictions of your unit and it will be able to withstand all manner of weather conditions.
V-shape COMPACT Dry Cooler
Boasting high power with a small footprint, the V-shape COMPACT Dry Cooler is best suited for noise-sensitive applications under stringent sound constraints.
V-shape VARIO Dry Cooler
A cooling solution that’s configurable to meet your business’s needs, the dry cooler's v-shape design means it can be easily integrated into your building, offering maximum capacity with a minimal footprint.
