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SmartHeat aero nature 074

The SmartHeat aero nature 074 is an air-to-water heat pump with a SCOP of 4.58 (35 °C) and a sound power level of 64 dB(A).1,2

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SCOP (35 °C)
4.582

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

Outdoor unit sound power
64dB(A)2
Official source
Refrigerant
R2901
Official source
Type (source)
Air-to-water1
Official source
Rated output 35 °C
49kW2
Official source

Technical specifications

General
Type (source)Air-to-water1
Compressors21
Capacity controlleistungsstufen1
Performance
Rated output 35 °C49 kW2
Rated output 55 °C54 kW2
Efficiency
SCOP (35 °C)4.582
SCOP (55 °C)3.832
Seasonal efficiency ηs 35 °C180 %2
Seasonal efficiency ηs 55 °C150 %2
Energy label 35 °CA+++2
Energy label 55 °CA+++2
COP A7/W355.341
COP A2/W354.731
COP A-7/W353.591
Noise
Outdoor unit sound power64 dB(A)2
Refrigerant
RefrigerantR2901
Refrigerant charge9 kg1
Electrical
Max. power input33.8 kW1
Connectivity & smart
SG ReadyYes1

How it ranks

SCOP (35 °C): better than 26% of comparable models in our database (Heat pumps · Air-to-water · ≥ 14 kW; n = 208).

Rank 152 of 209

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:

  • aero nature 074
  • aero nature 074 R

Similar models

Other brands, same type and a comparable size.

How we collect and check this data →

Frequently asked questions

Which refrigerant does the SmartHeat aero nature 074 use?

The SmartHeat aero nature 074 uses R290.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed Sep 27, 2026
  2. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed Oct 15, 2026