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Kronoterm VERSI-O 0209-K1 HT / HK 1F

The Kronoterm VERSI-O 0209-K1 HT / HK 1F is an air-to-water heat pump with a SCOP of 4.86 (35 °C) and a sound power level of 43.9 dB(A).1,2

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SCOP (35 °C)
4.861

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

Heating capacity (A7/W35)
6.2kW2
Official source
Outdoor unit sound power
43.9dB(A)1
Official source
Refrigerant
R452B1
Official source
Type (source)
Air-to-water1
Official source

Technical specifications

General
Type (source)Air-to-water1
Compressors11
Capacity controldrehzahlregelung1
Performance
Heating capacity (A7/W35)6.2 kW2
Rated output 35 °C6.4 kW1
Rated output 55 °C6 kW1
Min. outdoor temperature-22 °C2
Efficiency
SCOP (35 °C)4.861
SCOP (55 °C)3.531
Seasonal efficiency ηs 35 °C191 %1
Seasonal efficiency ηs 55 °C138 %1
Energy label 35 °CA+++2
Energy label 55 °CA++2
COP A7/W355.011
COP A2/W353.721
COP A-7/W352.911
Noise
Outdoor unit sound power43.9 dB(A)1
Refrigerant
RefrigerantR452B1
Refrigerant GWP6982
Refrigerant charge1.5 kg1
Electrical
Max. power input3.6 kW1
Connectivity & smart
SG ReadyYes1

How it ranks

SCOP (35 °C): better than 63% of comparable models in our database (Heat pumps · Air-to-water · 6–8 kW; n = 182).

Rank 66 of 183

Compared with every model on VersusIndex in the same group with a known value; equal values do not count as better. This says nothing about price, installation or reliability.

Similar models

Other brands, same type and a comparable size.

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Frequently asked questions

Which refrigerant does the Kronoterm VERSI-O 0209-K1 HT / HK 1F use?

The Kronoterm VERSI-O 0209-K1 HT / HK 1F uses R452B.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed Oct 18, 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed Sep 29, 2026