AERMEC SWP301 vs Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW
Water heating efficiency ηwh: AERMEC SWP301 124 %, Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW 132 %. The Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW is better on 4 of 7 comparable points.
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Both models in detail
Who wins where
- AERMEC SWP301
- Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW
Biggest differences
| Fact | SWP301 | 2121261 AquaSnap 250 DHW-HP 1.25 kW |
|---|---|---|
| ηwh, warmer climate | 124 % | 144 % |
| Annual electricity use, warmer climate | 826 kWh | 713 kWh |
| Indoor sound power | 60 dB(A) | 53 dB(A) |
| ηwh, colder climate | 124 % | 116 % |
| Outdoor sound power | 60 dB(A) | 64 dB(A) |
| Annual electricity use, colder climate | 826 kWh | 880 kWh |
Score per area = position (0–100) relative to all 450 models in this category; higher is better.
| Technical specifications | AERMECSWP301 | Carrier2121261 AquaSnap 250 DHW-HP 1.25 kW |
|---|---|---|
| General | ||
| Load profile | L1 | L2 |
| Efficiency | ||
| Water heating efficiency ηwh | 124 %1 | 132 %✓2 |
| ηwh, colder climate | 124 %✓1 | 116 %2 |
| ηwh, warmer climate | 124 %1 | 144 %✓2 |
| Energy label | A+1 | A+2 |
| Annual electricity use, colder climate | 826 kWh✓1 | 880 kWh2 |
| Annual electricity use, warmer climate | 826 kWh1 | 713 kWh✓2 |
| Noise | ||
| Indoor sound power | 60 dB(A)1 | 53 dB(A)✓2 |
| Outdoor sound power | 60 dB(A)✓1 | 64 dB(A)2 |
Frequently asked questions
Which is better: the AERMEC SWP301 or the Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW?
Water heating efficiency ηwh: AERMEC SWP301 124 %, Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW 132 %. The Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW is better on 4 of 7 comparable points.
What is the water heating efficiency ηwh of the AERMEC SWP301 and the Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW?
AERMEC SWP301: 124 %. Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW: 132 %.
Which is better on ηwh, warmer climate: the AERMEC SWP301 or the Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW?
Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW: 144 %. AERMEC SWP301: 124 %.
Which is better on annual electricity use, warmer climate: the AERMEC SWP301 or the Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW?
Carrier 2121261 AquaSnap 250 DHW-HP 1.25 kW: 713 kWh. AERMEC SWP301: 826 kWh.
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