CTC EcoAir 400 Outdoor Air Source Heat Pump (Models 406 - 420)

The CTC EcoAir 400 is one of Scandinavia's most trusted and widely installed series of air-to-water outdoor heat pumps. Engineered to withstand harsh winter conditions, this premium outdoor unit harvests renewable energy from the outside air and converts it into affordable hydronic space heating and domestic hot water without the need for expensive ground loops or boreholes. It operates efficiently in temperatures as low as -22°C and can produce hot water up to 65°C.

To ensure an exact match for any property size—from modest residential homes to larger buildings—the CTC EcoAir 400 range is split into five specific model sizes: EcoAir 406, EcoAir 408, EcoAir 410, EcoAir 412, and EcoAir 420. Each unit utilizes a reliable, high-output on/off scroll compressor paired with an electronic expansion valve and an aerodynamic, sound-dampening fan design to guarantee exceptionally quiet operation. A smart, demand-controlled hot-gas defrost system minimizes runtime interruptions during freezing weather, extending the unit's lifespan while maximizing cumulative seasonal energy savings.

The series features an adaptable architecture designed for flexible integration. It performs optimally when docked with a dedicated indoor module, such as the CTC EcoZenith range. For property owners looking to integrate a heat pump into an existing system alongside an older boiler, solar panels, or a pool setup, it can be linked directly using the CTC EcoLogic smart control module. This master-controller setup can even cascade up to ten separate EcoAir heat pumps together for high-capacity light commercial applications.

Technical Specifications Matrix (All 5 Sizes)

Please note that the manufacturer’s full warranty is not applicable for units bought in Sweden and installed outside Sweden.