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Heat pump water heaters · Compare

AERMEC SWP301 vs SAUTER 396012

Water heating efficiency ηwh: AERMEC SWP301 124 %, SAUTER 396012 132 %. The SAUTER 396012 is better on 5 of 7 comparable points.

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Who wins where

  • AERMEC SWP301
  • SAUTER 396012

Biggest differences

FactSWP301396012
Indoor sound power60 dB(A)47 dB(A)
ηwh, warmer climate124 %147 %
Annual electricity use, warmer climate826 kWh697 kWh
Annual electricity use, colder climate826 kWh894 kWh
ηwh, colder climate124 %115 %
Water heating efficiency ηwh124 %132 %
All specifications ↓

Score per area = position (0–100) relative to all 450 models in this category; higher is better.

AERMECSWP301SAUTER396012
General
Load profileL1L2
Efficiency
Water heating efficiency ηwh124 %1132 %✓2
ηwh, colder climate124 %✓1115 %2
ηwh, warmer climate124 %1147 %✓2
Energy labelA+1A+2
Annual electricity use, colder climate826 kWh✓1894 kWh2
Annual electricity use, warmer climate826 kWh1697 kWh✓2
Noise
Indoor sound power60 dB(A)147 dB(A)✓2
Outdoor sound power60 dB(A)158 dB(A)✓2

Frequently asked questions

Which is better: the AERMEC SWP301 or the SAUTER 396012?

Water heating efficiency ηwh: AERMEC SWP301 124 %, SAUTER 396012 132 %. The SAUTER 396012 is better on 5 of 7 comparable points.

What is the water heating efficiency ηwh of the AERMEC SWP301 and the SAUTER 396012?

AERMEC SWP301: 124 %. SAUTER 396012: 132 %.

Which is better on indoor sound power: the AERMEC SWP301 or the SAUTER 396012?

SAUTER 396012: 47 dB(A). AERMEC SWP301: 60 dB(A).

Which is better on ηwh, warmer climate: the AERMEC SWP301 or the SAUTER 396012?

SAUTER 396012: 147 %. AERMEC SWP301: 124 %.

How we collect and check this data →

Sources

  1. European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed Oct 13, 2026
  2. European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed Oct 13, 2026