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Heat pump water heaters · Compare

AERMEC SWP301 vs ATLANTIC 234512

Water heating efficiency ηwh: AERMEC SWP301 124 %, ATLANTIC 234512 131 %. The ATLANTIC 234512 is better on 5 of 7 comparable points.

Last updated: + Add a model

Who wins where

  • AERMEC SWP301
  • ATLANTIC 234512

Biggest differences

FactSWP301234512
Indoor sound power60 dB(A)37 dB(A)
Outdoor sound power60 dB(A)43 dB(A)
Annual electricity use, warmer climate826 kWh656 kWh
ηwh, warmer climate124 %156 %
Annual electricity use, colder climate826 kWh925 kWh
ηwh, colder climate124 %111 %
All specifications ↓

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

AERMECSWP301ATLANTIC234512
General
Load profileL1L2
Efficiency
Water heating efficiency ηwh124 %1131 %✓2
ηwh, colder climate124 %✓1111 %2
ηwh, warmer climate124 %1156 %✓2
Energy labelA+1A+2
Annual electricity use, colder climate826 kWh✓1925 kWh2
Annual electricity use, warmer climate826 kWh1656 kWh✓2
Noise
Indoor sound power60 dB(A)137 dB(A)✓2
Outdoor sound power60 dB(A)143 dB(A)✓2

Frequently asked questions

Which is better: the AERMEC SWP301 or the ATLANTIC 234512?

Water heating efficiency ηwh: AERMEC SWP301 124 %, ATLANTIC 234512 131 %. The ATLANTIC 234512 is better on 5 of 7 comparable points.

What is the water heating efficiency ηwh of the AERMEC SWP301 and the ATLANTIC 234512?

AERMEC SWP301: 124 %. ATLANTIC 234512: 131 %.

Which is better on indoor sound power: the AERMEC SWP301 or the ATLANTIC 234512?

ATLANTIC 234512: 37 dB(A). AERMEC SWP301: 60 dB(A).

Which is better on outdoor sound power: the AERMEC SWP301 or the ATLANTIC 234512?

ATLANTIC 234512: 43 dB(A). AERMEC SWP301: 60 dB(A).

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