Overview

• Stiftung Warentest evaluated seven split units for issue 6/2024, with five rated good and two satisfactory across six ≈2.5 kW models and one 3.5 kW unit.
• Bosch’s CLC8001i-W 25 E + CLC8001i 25 E emerged as the top performer at about €1,500, noted for efficient cooling and heating plus precise temperature control.
• In testing, devices warmed a 25 m² room from 15°C to 20°C in 7.5–12 minutes, met roughly 80% of heat demand, and cost about €410 per year to heat that space, about 20% cheaper than gas with ~60% lower environmental impact.
• Certain split systems qualify as air-to-air heat pumps and may receive BAFA/BEG support, which requires checking the federal eligible list.
• Retailer ACTEC is promoting Hantech single-split units with inverter tech and R32 at €449 for 2.6 kW (≈30–35 m²), €698.99 for 3.6 kW (≈50 m²), and €899 for 5.1 kW (≈70 m²), with example annual electricity costs of roughly €104, €156, and €233.