The most visionary heating and cooling
systems in the world

Fenagy develops and manufactures refrigeration and heat pump systems based on the natural refrigerants CO₂ and hydrocarbons.
We always use natural refrigerants because they are efficient and have no harmful effects on the environment and climate
- unlike all alternative synthetic refrigerants. Natural refrigerants are the refrigerants of the future, not just in Denmark.

Factory-built CO2 heat pump system for district heating and industry. Can be water-to-water or air-to-water heat pump.

HEAT PUMPS

Factory-built industrial refrigeration system installed on a rack. It's a CO2 chiller.

CHILLERS

Factory-built combined heat and cooling system on a rack. Suitable for large industrial buildings-.

COMBINED HEAT AND COOLING

High-temperature isobutane heat pump in enclosure. It can reach supply temperatures up to 95°C regardless of the return temperature.

HEAT PUMPS, CHILLERS & COMBINED

Propane industrial chiller in enclosure. It can reach supply temperatures up to 75°C.

CHILLERS, HEAT PUMPS & COMBINED

We only use natural refrigerants

Diagram showing temperature ranges of natural refrigerants CO2 (R744, Isobutane (R600a) and Propane (R290)
Green icon saying Natural Refrigerants ONLY.

R744 - CO₂

APPLICATIONS: District heating, heat networks, industrial processes, food industry, green houses, data centres, logistics centres, offices,
hospitals and HVAC in general

  • Natural refrigerant with a wide temperature range

  • Non-toxic and non-flammable

  • Excellent choice for air-sourced heat pumps for direct use in the energy collectors and with high delta T on the heat sink side

  • Optimal for medium-temperature water-sourced heat pumps, chillers and combined heating and cooling applications

  • Medium-high temperature level on heat sink (up to 85°C supply temp) with high delta T on the heat sink (dT: 30-40K)

R600a - Isobutane

APPLICATIONS: Heat networks, Biogas, PtX, geothermal, carbon capture, CO₂ heat pump sub-cooler, industrial processes and food industry 

  • High-temperature natural refrigerant

  • Suitable for water-sourced heat pumps and chillers

  • Can be used in a wide temperature range on both the heat source and heat sink sides

  • Robust operation under various operating conditions

  • Use of efficient screw compressors and high COP of the cycle

  • High temperature level on heat source (up to 40°C evap. temp)

  • High temperature level on heat sink (up to 95°C supply temp) and ideal with low delta T on heat sink - serial coupling on water side at higher delta T

R290 - Propane

APPLICATIONS: Heat networks, industrial processes, food industry, data centres, offices, hospitals and HVAC in general

  • Low-temperature natural refrigerant

  • Suitable for lower temperature water-sourced heat pumps and chillers

  • Low temperature level on heat source (down to -30 °C evap. temp)

  • Medium temperature level on heat sink (up to 75 °C supply temp)

  • Ideal with low delta T on sink and heat source

  • High refrigeration capacity ensures compact solutions with small footprint

  • Can be combined with isobutane in serial hydraulic couplings