Heat pumps · MT

ThermiaLegend 17 Duo 400V

The Thermia Legend 17 Duo 400V is a heat pump with SCOP (35 °C) 5.51 and refrigerant R452B.¹

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

SCOP (35 °C): 5.51¹

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.
Refrigerant: R452B¹

Official source
Type (source): Ground source¹

Official source
Rated output 35 °C: 21.73kW¹

Official source
Rated output 55 °C: 24.86kW¹

Official source

Technical specifications

General
Type (source)	Ground source¹
Performance
Rated output 35 °C	21.73 kW¹
Rated output 55 °C	24.86 kW¹
Efficiency
SCOP (35 °C)	5.51¹
SCOP (55 °C)	4.64¹
Seasonal efficiency ηs 35 °C	213 %¹
Seasonal efficiency ηs 55 °C	178 %¹
Energy label 35 °C	A, , , ¹
Energy label 55 °C	A, , , ¹
Noise
Indoor unit sound power	45 dB(A)¹
Refrigerant
Refrigerant	R452B¹
Refrigerant GWP	698¹
Refrigerant charge	1.25 kg¹

Manufacturer documentation

Datasheet / specifications — Thermia Legend Datasheet (login.thermia.se, PDF)
Brochure / leaflet — Thermia Legend brochure voor eindgebruikers (login.thermia.se, PDF)
Manual — Thermia Legend Gebruikershandleiding (login.thermia.se, PDF)

External links to Thermia'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 Thermia Legend 17 Duo 400V?

The SCOP (35 °C) of the Thermia Legend 17 Duo 400V is 5.51.¹

Which refrigerant does the Thermia Legend 17 Duo 400V use?

The refrigerant of the Thermia Legend 17 Duo 400V is R452B.¹

Sources

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

Key figures