AERMEC SWP301 vs Immergas RAPAX 200 V4
Water heating efficiency ηwh: AERMEC SWP301 124 %, Immergas RAPAX 200 V4 131 %. The Immergas RAPAX 200 V4 is better on 6 of 7 comparable points.
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Both models in detail
Who wins where
- AERMEC SWP301
- Immergas RAPAX 200 V4
Biggest differences
| Fact | SWP301 | RAPAX 200 V4 |
|---|---|---|
| Annual electricity use, colder climate | 826 kWh | 148 kWh |
| ηwh, colder climate | 124 % | 98 % |
| Annual electricity use, warmer climate | 826 kWh | 710 kWh |
| ηwh, warmer climate | 124 % | 144 % |
| Indoor sound power | 60 dB(A) | 56 dB(A) |
| Outdoor sound power | 60 dB(A) | 56 dB(A) |
Score per area = position (0–100) relative to all 450 models in this category; higher is better.
| Technical specifications | AERMECSWP301 | ImmergasRAPAX 200 V4 |
|---|---|---|
| General | ||
| Load profile | L1 | L2 |
| Efficiency | ||
| Water heating efficiency ηwh | 124 %1 | 131 %✓2 |
| ηwh, colder climate | 124 %✓1 | 98 %2 |
| ηwh, warmer climate | 124 %1 | 144 %✓2 |
| Energy label | A+1 | A+2 |
| Annual electricity use, colder climate | 826 kWh1 | 148 kWh✓2 |
| Annual electricity use, warmer climate | 826 kWh1 | 710 kWh✓2 |
| Noise | ||
| Indoor sound power | 60 dB(A)1 | 56 dB(A)✓2 |
| Outdoor sound power | 60 dB(A)1 | 56 dB(A)✓2 |
Frequently asked questions
Which is better: the AERMEC SWP301 or the Immergas RAPAX 200 V4?
Water heating efficiency ηwh: AERMEC SWP301 124 %, Immergas RAPAX 200 V4 131 %. The Immergas RAPAX 200 V4 is better on 6 of 7 comparable points.
What is the water heating efficiency ηwh of the AERMEC SWP301 and the Immergas RAPAX 200 V4?
AERMEC SWP301: 124 %. Immergas RAPAX 200 V4: 131 %.
Which is better on annual electricity use, colder climate: the AERMEC SWP301 or the Immergas RAPAX 200 V4?
Immergas RAPAX 200 V4: 148 kWh. AERMEC SWP301: 826 kWh.
Which is better on ηwh, colder climate: the AERMEC SWP301 or the Immergas RAPAX 200 V4?
AERMEC SWP301: 124 %. Immergas RAPAX 200 V4: 98 %.
Related comparisons
How we collect and check this data →
Sources
- European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed 13 Oct 2026
- European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed 13 Oct 2026