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VaillantVWL 75/8.2 AS 230V S2 + VWL 78/8.2 IS C2

Vaillant VWL 75/8.2 AS 230V S2 + VWL 78/8.2 IS C2
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The Vaillant VWL 75/8.2 AS 230V S2 + VWL 78/8.2 IS C2 is an air-to-water heat pump with a SCOP of 4.75 (35 °C) and a sound power level of 48 dB(A).1

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SCOP (35 °C)
4.751

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

Heating capacity (A7/W35)
5.07kW1
Official source
Outdoor unit sound power
48dB(A)1
Official source
Refrigerant
R321
Official source
Type (source)
Air-to-water1
Official source

Technical specifications

General
Type (source) Air-to-water1
Performance
Heating capacity (A7/W35) 5.07 kW1
Rated output 35 °C 6.61 kW1
Rated output 55 °C 5.67 kW1
Min. outdoor temperature -20 °C1
Efficiency
SCOP (35 °C) 4.751
SCOP (55 °C) 3.41
Seasonal efficiency ηs 35 °C 187 %1
Seasonal efficiency ηs 55 °C 133 %1
Energy label 35 °C A, , , 1
Energy label 55 °C A, , 1
COP A7/W35 51
Noise
Outdoor unit sound power 48 dB(A)1
Indoor unit sound power 42 dB(A)1
Refrigerant
Refrigerant R321
Refrigerant GWP 6751
Refrigerant charge 1.5 kg1

Manufacturer documentation

  • Product page (vaillant.de)
  • Brochure / leaflet — Produktinfo Luft/Wasser-Wärmepumpe aroTHERM Split plus (vaillant.de, PDF)
  • Manual — aroTHERM Split plus Betriebs- und Installationsanleitung (vaillant.de, PDF)

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

Frequently asked questions

Which refrigerant does the Vaillant VWL 75/8.2 AS 230V S2 + VWL 78/8.2 IS C2 use?

The Vaillant VWL 75/8.2 AS 230V S2 + VWL 78/8.2 IS C2 uses R32.1

Sources

  1. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026