Heat pumps · MT

VaillantVWS 53/8.1 iQ

The Vaillant VWS 53/8.1 iQ is a heat pump with SCOP (35 °C) 5.71 and refrigerant R290.¹

Last updated: 29 September 2026 Technical specifications ⇄ Compare this model

SCOP (35 °C): 5.71¹

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.
Refrigerant: R290¹

Official source
Type (source): Ground source¹

Official source
Rated output 35 °C: 5.04kW¹

Official source
Rated output 55 °C: 4.9kW¹

Official source

Technical specifications

General
Type (source)	Ground source¹
Performance
Rated output 35 °C	5.04 kW¹
Rated output 55 °C	4.9 kW¹
Efficiency
SCOP (35 °C)	5.71¹
SCOP (55 °C)	4.14¹
Seasonal efficiency ηs 35 °C	220 %¹
Seasonal efficiency ηs 55 °C	158 %¹
Energy label 35 °C	A, , , ¹
Energy label 55 °C	A, , , ¹
Noise
Indoor unit sound power	37 dB(A)¹
Refrigerant
Refrigerant	R290¹
Refrigerant GWP	3¹
Refrigerant charge	0.65 kg¹

Manufacturer documentation

Product page (vaillant.de)
Brochure / leaflet — Produktinfo geoCOMPACT exclusive (vaillant.de, PDF)
Manual — geoCOMPACT exclusive 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

What is the SCOP (35 °C) of the Vaillant VWS 53/8.1 iQ?

The SCOP (35 °C) of the Vaillant VWS 53/8.1 iQ is 5.71.¹

Which refrigerant does the Vaillant VWS 53/8.1 iQ use?

The refrigerant of the Vaillant VWS 53/8.1 iQ is R290.¹

Sources

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

Key figures