Heatwave coming? Don’t want to see your electricity bill skyrocket? Here are 10 practical tips for staying cool without breaking the bank.
1. Choose an energy-efficient air conditioner
An evaporative air conditioner (such as Silent 3-in-1) uses 65 W. An installed wall-mounted air conditioner uses 1500–2500 W. Difference: 30× less.
2. Set the thermostat to at least 26°C
Each degree below 26°C = +7% energy consumption. Set it to 26°C and add a fan for a cooler feeling.
3. Use night / sleep mode
Night mode reduces power by 30–50% while you sleep. All Coldest Breeze units include this mode.
4. Close the shutters during the day
20% savings: closed shutters = the room doesn’t heat up = the air conditioner works less.
5. Set a timer
There’s no need to run the air conditioner all night. Set it for 4–6 hours—you’ll be in deep sleep afterward.
6. Maintain the filter
A clogged filter = +30% energy consumption. Rinse it with water every 2 weeks during summer.
7. Cool just one room
Instead of investing in a wall-mounted air conditioner for the entire apartment, buy a portable air conditioner for the bedroom (where you spend 8 hours a night). Savings: 80% of the total cost.
8. Combine it with a ceiling fan
The fan creates a perceived temperature drop of 3°C. You can set the air conditioner 2°C higher = 14% savings.
9. Take advantage of off-peak hours
Electricity costs 30% less at night (off-peak hours). Program your air conditioner to cool the room before peak hours.
10. Insulate the windows
Thermal insulation films for windows: €8–15 per window, with 20% savings on your bill. ROI in 1 summer.
Savings table
| Tip | Potential savings |
|---|---|
| Choose an evaporative model | 30× less energy consumption |
| Thermostat at 26°C | +7% per degree |
| Night mode | -30 to 50% |
| Shutters closed during the day | -20% |
| Clean filter | -30% |
| Window insulation films | -20% |
Conclusion
By combining these tips, you can cut your summer electricity bill by two-thirds while keeping your home cool. For the most energy-efficient equipment, see our evaporative portable air conditioners.