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Heat pumps · IE

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 Ireland⇄ 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
IE

Rules in Ireland

SEAI Heat Pump System Grant

Check conditions

€14,5003Maximum for a house, incl. €2,000 boiler scrappage

Up to €14,500 for a house (€11,500 for an apartment), including a €2,000 boiler scrappage grant when an oil, gas, solid-fuel or storage-heater system is removed. Homes built before 2007 need a technical assessment (€200 grant) unless the BER shows a Heat Loss Indicator of 2.3 or less. Installation is charged at 9% VAT.4

  • The heat pump must be listed on SEAI's Home Appliance Register of Performance (HARP) and installed by an SEAI-registered contractor.
  • Home built and occupied before 2021, with an MPRN; grant approval before any work starts and a BER assessment afterwards.

Heat pumps: grants and rules in Ireland →

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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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

How much SEAI grant can you get for the Thermia Sigrin 19 400V?

Up to €14,500 with the SEAI Heat Pump System Grant, including €2,000 boiler scrappage when an oil, gas, solid-fuel or storage-heater system is removed (€11,500 for an apartment). The home must be built and occupied before 2021, the heat pump must be on SEAI's HARP register and you need grant approval before work starts.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 8 Nov 2026
  3. Heat Pump System Grants — SEAI · accessed 4 Oct 2026
  4. Heat pump heating system (VAT) — Revenue · accessed 4 Oct 2026