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Heat pumps · MT

Kronoterm ADAPT 0312-K3 HT / HK 1F

Kronoterm ADAPT 0312-K3 HT / HK 1F
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The Kronoterm ADAPT 0312-K3 HT / HK 1F is an air-to-water heat pump with a SCOP of 4.92 (35 °C) and a sound power level of 51 dB(A).1,2

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SCOP (35 °C)
4.921

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

Heating capacity (A7/W35)
6.08kW2
Official source
Outdoor unit sound power
51dB(A)1
Official source
Refrigerant
R452B1
Official source
Type (source)
Air-to-water1
Official source
MT

Rules in Malta

Water Heater Scheme (heat pump water heaters)

Unknown

REWS runs a national grant scheme for energy-efficient water heaters in homes; heat pump water heaters are eligible (alongside solar water heaters). The scheme has been extended to 31 December 2026, and part A of the application must be submitted before you buy and install the equipment. Grant amounts: see the REWS page (not verified by us).

Technical specifications

General
Type (source)Air-to-water1
Compressors11
Capacity controldrehzahlregelung1
Performance
Heating capacity (A7/W35)6.08 kW2
Rated output 35 °C8 kW1
Rated output 55 °C7.4 kW1
Efficiency
SCOP (35 °C)4.921
SCOP (55 °C)3.561
Seasonal efficiency ηs 35 °C193.8 %1
Seasonal efficiency ηs 55 °C139.3 %1
Energy label 35 °CA+++2
Energy label 55 °CA++2
COP A7/W355.481
COP A2/W354.421
COP A-7/W353.171
Noise
Outdoor unit sound power51 dB(A)1
Refrigerant
RefrigerantR452B1
Refrigerant GWP6982
Refrigerant charge2.9 kg1
Electrical
Max. power input4.5 kW1
Connectivity & smart
SG ReadyYes1

How it ranks

SCOP (35 °C): better than 50% of comparable models in our database (Heat pumps · Air-to-water · 8–10 kW; n = 171).

Rank 84 of 172

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.

Manufacturer documentation

External links to Kronoterm's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.

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Other brands, same type and a comparable size.

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Frequently asked questions

Which refrigerant does the Kronoterm ADAPT 0312-K3 HT / HK 1F use?

The Kronoterm ADAPT 0312-K3 HT / HK 1F uses R452B.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 18 Oct 2026
  2. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
  3. Water Heater Scheme (heat pump water heaters) — Regulator for Energy and Water Services (REWS)