COSMOGAS AGUAMAX 300 vs Goodheat GHWSVT-300AA1
Water heating efficiency ηwh: COSMOGAS AGUAMAX 300 118 %, Goodheat GHWSVT-300AA1 124 %. The Goodheat GHWSVT-300AA1 is better on 8 of 8 comparable points.
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Both models in detail
Who wins where
- COSMOGAS AGUAMAX 300
- Goodheat GHWSVT-300AA1
Biggest differences
| Fact | AGUAMAX 300 | GHWSVT-300AA1 |
|---|---|---|
| Annual electricity use (average climate) | 1,389 kWh | 1,111 kWh |
| ηwh, colder climate | 97 % | 117 % |
| Annual electricity use, colder climate | 1,740 kWh | 1,467 kWh |
| Annual electricity use, warmer climate | 1,300 kWh | 1,205 kWh |
| ηwh, warmer climate | 130 % | 140 % |
| Indoor sound power | 58 dB(A) | 55 dB(A) |
Score per area = position (0–100) relative to all 450 models in this category; higher is better.
| Technical specifications | COSMOGASAGUAMAX 300 | GoodheatGHWSVT-300AA1 |
|---|---|---|
| General | ||
| Load profile | XL1 | XL2 |
| Efficiency | ||
| Water heating efficiency ηwh | 118 %1 | 124 %✓2 |
| ηwh, colder climate | 97 %1 | 117 %✓2 |
| ηwh, warmer climate | 130 %1 | 140 %✓2 |
| Energy label | A1 | A+2 |
| Annual electricity use (average climate) | 1,389 kWh1 | 1,111 kWh✓2 |
| Annual electricity use, colder climate | 1,740 kWh1 | 1,467 kWh✓2 |
| Annual electricity use, warmer climate | 1,300 kWh1 | 1,205 kWh✓2 |
| Noise | ||
| Indoor sound power | 58 dB(A)1 | 55 dB(A)✓2 |
| Outdoor sound power | 58 dB(A)1 | 55 dB(A)✓2 |
| Connectivity & smart | ||
| Smart control | – | Yes2 |
Frequently asked questions
Which is better: the COSMOGAS AGUAMAX 300 or the Goodheat GHWSVT-300AA1?
Water heating efficiency ηwh: COSMOGAS AGUAMAX 300 118 %, Goodheat GHWSVT-300AA1 124 %. The Goodheat GHWSVT-300AA1 is better on 8 of 8 comparable points.
What is the water heating efficiency ηwh of the COSMOGAS AGUAMAX 300 and the Goodheat GHWSVT-300AA1?
COSMOGAS AGUAMAX 300: 118 %. Goodheat GHWSVT-300AA1: 124 %.
Which is better on annual electricity use (average climate): the COSMOGAS AGUAMAX 300 or the Goodheat GHWSVT-300AA1?
Goodheat GHWSVT-300AA1: 1,111 kWh. COSMOGAS AGUAMAX 300: 1,389 kWh.
Which is better on ηwh, colder climate: the COSMOGAS AGUAMAX 300 or the Goodheat GHWSVT-300AA1?
Goodheat GHWSVT-300AA1: 117 %. COSMOGAS AGUAMAX 300: 97 %.
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