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CTAOH CT 18s (Wasser/Wasser)

The CTA OH CT 18s (Wasser/Wasser) is a heat pump with SCOP (35 °C) 7.06 and refrigerant R290.1

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SCOP (35 °C)
7.061

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.

Refrigerant
R2901
Official source
Type (source)
Water-to-water1
Official source
Rated output 35 °C
17kW1
Official source
Rated output 55 °C
17kW1
Official source

Technical specifications

General
Type (source) Water-to-water1
Compressors 21
Capacity control drehzahlregelung1
Performance
Rated output 35 °C 17 kW1
Rated output 55 °C 17 kW1
Efficiency
SCOP (35 °C) 7.061
SCOP (55 °C) 5.031
Seasonal efficiency ηs 35 °C 274 %1
Seasonal efficiency ηs 55 °C 193 %1
Noise
Indoor unit sound power 40 dB(A)1
Refrigerant
Refrigerant R2901
Refrigerant charge 0.3 kg1
Electrical
Max. power input 8.6 kW1
Connectivity & smart
SG Ready Yes1

Frequently asked questions

What is the SCOP (35 °C) of the CTA OH CT 18s (Wasser/Wasser)?

The SCOP (35 °C) of the CTA OH CT 18s (Wasser/Wasser) is 7.06.1

Which refrigerant does the CTA OH CT 18s (Wasser/Wasser) use?

The refrigerant of the CTA OH CT 18s (Wasser/Wasser) is R290.1

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026