AIRTHERMIA EU-RSJ-09/150RDN7-B1 vs Qlima ST 23 190 HRU
Water heating efficiency ηwh: AIRTHERMIA EU-RSJ-09/150RDN7-B1 122 %, Qlima ST 23 190 HRU 128 %. The Qlima ST 23 190 HRU is better on 4 of 7 comparable points.
Last updated: + Add a model
Both models in detail
Who wins where
- AIRTHERMIA EU-RSJ-09/150RDN7-B1
- Qlima ST 23 190 HRU
Biggest differences
| Fact | EU-RSJ-09/150RDN7-B1 | ST 23 190 HRU |
|---|---|---|
| Annual electricity use, colder climate | 997 kWh | 100 kWh |
| Annual electricity use, warmer climate | 746 kWh | 145 kWh |
| Indoor sound power | 56 dB(A) | 64 dB(A) |
| ηwh, warmer climate | 137 % | 145 % |
| Water heating efficiency ηwh | 122 % | 128 % |
| ηwh, colder climate | 103 % | 100 % |
Score per area = position (0–100) relative to all 450 models in this category; higher is better.
| Technical specifications | AIRTHERMIAEU-RSJ-09/150RDN7-B1 | QlimaST 23 190 HRU |
|---|---|---|
| General | ||
| Load profile | L1 | L2 |
| Efficiency | ||
| Water heating efficiency ηwh | 122 %1 | 128 %✓2 |
| ηwh, colder climate | 103 %✓1 | 100 %2 |
| ηwh, warmer climate | 137 %1 | 145 %✓2 |
| Energy label | A+1 | A+2 |
| Annual electricity use, colder climate | 997 kWh1 | 100 kWh✓2 |
| Annual electricity use, warmer climate | 746 kWh1 | 145 kWh✓2 |
| Noise | ||
| Indoor sound power | 56 dB(A)✓1 | 64 dB(A)2 |
| Connectivity & smart | ||
| Smart control | Yes1 | Yes2 |
Frequently asked questions
Which is better: the AIRTHERMIA EU-RSJ-09/150RDN7-B1 or the Qlima ST 23 190 HRU?
Water heating efficiency ηwh: AIRTHERMIA EU-RSJ-09/150RDN7-B1 122 %, Qlima ST 23 190 HRU 128 %. The Qlima ST 23 190 HRU is better on 4 of 7 comparable points.
What is the water heating efficiency ηwh of the AIRTHERMIA EU-RSJ-09/150RDN7-B1 and the Qlima ST 23 190 HRU?
AIRTHERMIA EU-RSJ-09/150RDN7-B1: 122 %. Qlima ST 23 190 HRU: 128 %.
Which is better on annual electricity use, colder climate: the AIRTHERMIA EU-RSJ-09/150RDN7-B1 or the Qlima ST 23 190 HRU?
Qlima ST 23 190 HRU: 100 kWh. AIRTHERMIA EU-RSJ-09/150RDN7-B1: 997 kWh.
Which is better on annual electricity use, warmer climate: the AIRTHERMIA EU-RSJ-09/150RDN7-B1 or the Qlima ST 23 190 HRU?
Qlima ST 23 190 HRU: 145 kWh. AIRTHERMIA EU-RSJ-09/150RDN7-B1: 746 kWh.
Related comparisons
- AIRTHERMIAEU-RSJ-09/150RDN7-B1vsAUSTRIA EMAIL976043
- AIRTHERMIAEU-RSJ-09/150RDN7-B1vsComfortzoneRX20-200
- AIRTHERMIAEU-RSJ-09/150RDN7-B1vsEco Hot Water01-05 150l
- AIRTHERMIAEU-RSJ-09/150RDN7-B1vsEco Hot Water01-05 200l
- AIRTHERMIAEU-RSJ-09/150RDN7-B1vsMideaRSJ-15/185RDN7-L1
- AIRTHERMIAEU-RSJ-09/150RDN7-B1vsOekoboilerZG 02-05 150l
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