AERMEC SWP301 vs ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073
Water heating efficiency ηwh: AERMEC SWP301 124 %, ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073 142 %. The ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073 is better on 5 of 7 comparable points.
Both models in detail
Who wins where
- AERMEC SWP301
- ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073
Biggest differences
| Fact | SWP301 | ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073 |
|---|---|---|
| Annual electricity use, warmer climate | 826 kWh | 648 kWh |
| ηwh, warmer climate | 124 % | 158 % |
| Indoor sound power | 60 dB(A) | 48 dB(A) |
| Annual electricity use, colder climate | 826 kWh | 1,025 kWh |
| ηwh, colder climate | 124 % | 100 % |
| Water heating efficiency ηwh | 124 % | 142 % |
Score per area = position (0–100) relative to all 450 models in this category; higher is better.
| Technical specifications | AERMECSWP301 | ATAGENERGION NUOS PLUS S2 WI-FI 200 FS 4057073 |
|---|---|---|
| General | ||
| Load profile | L1 | L2 |
| Efficiency | ||
| Water heating efficiency ηwh | 124 %1 | 142 %✓2 |
| ηwh, colder climate | 124 %✓1 | 100 %2 |
| ηwh, warmer climate | 124 %1 | 158 %✓2 |
| Energy label | A+1 | A+2 |
| Annual electricity use, colder climate | 826 kWh✓1 | 1,025 kWh2 |
| Annual electricity use, warmer climate | 826 kWh1 | 648 kWh✓2 |
| Noise | ||
| Indoor sound power | 60 dB(A)1 | 48 dB(A)✓2 |
| Outdoor sound power | 60 dB(A)1 | 57 dB(A)✓2 |
Frequently asked questions
Which is better: the AERMEC SWP301 or the ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073?
Water heating efficiency ηwh: AERMEC SWP301 124 %, ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073 142 %. The ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073 is better on 5 of 7 comparable points.
What is the water heating efficiency ηwh of the AERMEC SWP301 and the ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073?
AERMEC SWP301: 124 %. ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073: 142 %.
Which is better on annual electricity use, warmer climate: the AERMEC SWP301 or the ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073?
ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073: 648 kWh. AERMEC SWP301: 826 kWh.
Which is better on ηwh, warmer climate: the AERMEC SWP301 or the ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073?
ATAG ENERGION NUOS PLUS S2 WI-FI 200 FS 4057073: 158 %. AERMEC SWP301: 124 %.
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