Bosch B1ZAI1251W/B1ZAO1251W
Uses less electricity than 55% of the 3,067 split air conditioners, 3 kW on the EU register. At your selected price (European Union) that is €50 a year, €501 over ten years.
- Cooling, SEER
- 7.0
- Typical 6.5
- Heating, SCOP
- 4.1
- Typical 4.1
- Cooling cost
- €50 / year
- +€261 if you also heat with it (average climate)
Near the middle of its group: 4 % below the typical 184 kWh. Class A++ is the most common class in this group (67% of models). Heating efficiency (SCOP 4.1) is above the typical 4.1 of its group. Bosch has 77 models in this group; this one is number 46 among them. Bosch sells the same label values under other model names: B1ZAI1241W/B1ZAO1241W. On the register since 2020 and still on sale.
Where it stands
Rank 1,341 of 3,067 split air conditioners, 3 kW by yearly consumption. 1,340 use less.
Next to it in the ranking
- Mobika EL-CLSAURIR32-035-2 177 kWh same
- Bosch B1ZAI1241W/B1ZAO1241W 177 kWh same
- Bosch B1ZAI1251W/B1ZAO1251W 177 kWh
- Daitsu DB-12KDB_DOX-12KDB 177 kWh same
- Argo ACG ECO 35PH+AEG ECO 35PIH 177 kWh same
What it will cost you
| Period | B1ZAI1251W/B1ZAO1251W | NF-ST30CR | Difference |
|---|---|---|---|
| 1 year | €50 | €1 | −€49 |
| 5 years | €251 | €4 | −€246 |
| 10 years | €501 | €8 | −€493 |
| 15 years | €752 | €13 | −€739 |
Is the more efficient model worth its price?
Enter both purchase prices to see the total cost of ownership.
Cooling and heating
Same size, lower running cost
On sale, at least 10% less energy, same size group
| Model | kWh / yr | Saves / year |
|---|---|---|
| Bosch B1ZAI1251W/B1ZAO1251W (this model) | 177 | — |
| 3 | €49 | |
| 102 | €21 | |
| 103 | €21 | |
| 103 | €21 | |
| 112 | €18 |
Label and product sheet
- Energy class cooling / heating
- A++ / A+
- SEER
- 7.0
- SCOP warmer / average / colder
- – / 4.1 / –
- Cooling design load
- 3.5 kW
- Heating design load (average)
- 2.7 kW
- Yearly cooling
- 177 kWh
- Yearly heating (average climate)
- 923 kWh
- Sound power indoor / outdoor
- 56 / 60 dB(A)
- Refrigerant
- R32 (GWP 675)
Model numbers and history
Registered by Bosch under one model number.
B1ZAI1251W/B1ZAO1251W
- First published in the EU register (EPREL)
- Placed on the EU market
Questions
How much does the Bosch B1ZAI1251W/B1ZAO1251W cost to run?
At one cooling season as on the label it uses about 177 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €50 a year, or €501 over ten years.
What do SEER and SCOP mean?
This model reaches SEER 7.0 and SCOP 4.1 in the average climate: higher is better.