Heat pumps · MT

CTC GS 606

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The CTC GS 606 is a heat pump with SCOP (35 °C) 4.6 and refrigerant R407C.^1,2

Last updated: 15 October 2026Technical specifications Rules in Malta ⇄ Compare this model

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SCOP (35 °C): 4.6²
Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.
Refrigerant: R407C¹
Official source
Type (source): Ground source¹
Official source
Rated output 35 °C: 7kW²
Official source
Rated output 55 °C: 6kW²
Official source

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)	Ground source¹
Performance
Rated output 35 °C	7 kW²
Rated output 55 °C	6 kW²
Efficiency
SCOP (35 °C)	4.6²
SCOP (55 °C)	3.58²
Seasonal efficiency ηs 35 °C	181 %²
Seasonal efficiency ηs 55 °C	140 %²
Energy label 35 °C	A+++²
Energy label 55 °C	A++²
Noise
Indoor unit sound power	41 dB(A)²
Refrigerant
Refrigerant	R407C¹
Refrigerant GWP	1,774¹
Refrigerant charge	1.9 kg¹

How it ranks

SCOP (35 °C): better than 23% of comparable models in our database (Heat pumps · Ground source · 6–8 kW; n = 38).

Rank 27 of 39

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.

Frequently asked questions

What is the SCOP (35 °C) of the CTC GS 606?

The SCOP (35 °C) of the CTC GS 606 is 4.6.^1,2

Which refrigerant does the CTC GS 606 use?

The refrigerant of the CTC GS 606 is R407C.^1,2

Sources

Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026
Water Heater Scheme (heat pump water heaters) — Regulator for Energy and Water Services (REWS)

Key figures