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Heat pumps · MT

Thermia Sigrin 19 400V

The Thermia Sigrin 19 400V is a heat pump with SCOP (35 °C) 5.19 and refrigerant R454C.1,2

Last updated: Technical specificationsRules in Malta⇄ Compare this model
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SCOP (35 °C)
5.191

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

Refrigerant
R454C1
Official source
Type (source)
Ground source1
Official source
Rated output 35 °C
19.18kW1
Official source
Rated output 55 °C
16.64kW1
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)Ground source1
Compressors11
Capacity controlInverter1
Performance
Rated output 35 °C19.18 kW1
Rated output 55 °C16.64 kW1
Efficiency
SCOP (35 °C)5.191
SCOP (55 °C)4.081
Seasonal efficiency ηs 35 °C200 %1
Seasonal efficiency ηs 55 °C155 %1
Noise
Indoor unit sound power41 dB(A)1
Refrigerant
RefrigerantR454C1
Refrigerant GWP1462
Refrigerant charge1.55 kg1
Electrical
Max. power input6.1 kW1
Connectivity & smart
SG ReadyYes1
Grants & market
ISDE grant (NL)5,775 €2

How it ranks

SCOP (35 °C): better than 53% of comparable models in our database (Heat pumps · Ground source · ≥ 14 kW; n = 123).

Rank 56 of 124

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.

Variants

This model is registered in 2 combinations (for example with a different indoor unit or cylinder) with exactly the same performance. All figures on this page apply to each of these types. The part of the type number that differs is in bold; small differences (e.g. cylinder volume or anode) are listed after it:

  • Sigrin 19 400V
  • Sigrin 19 Duo 400V — Indoor unit sound power: 40 dB(A)

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Other brands, same type and a comparable size.

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How we collect and check this data →

Frequently asked questions

What is the SCOP (35 °C) of the Thermia Sigrin 19 400V?

The SCOP (35 °C) of the Thermia Sigrin 19 400V is 5.19.1,2

Which refrigerant does the Thermia Sigrin 19 400V use?

The refrigerant of the Thermia Sigrin 19 400V is R454C.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 25 Oct 2026
  2. ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 08 Nov 2026
  3. Water Heater Scheme (heat pump water heaters) — Regulator for Energy and Water Services (REWS)