The ideal temperature for your air conditioner is between 22 and 24 degrees Celsius. This setting offers the best balance between comfort, energy consumption, and health. For every degree below 24 degrees, your energy consumption increases by approximately 6 to 8 percent, while too large a temperature difference with the outside can be harmful to your body.

Why does an air conditioning setting that is too low cause headaches and fatigue?

An air conditioner set to 18 or 19 degrees runs much harder than necessary and creates an unnaturally large temperature difference compared to the outside temperature. This can lead to headaches, fatigue, and even cold symptoms, because your body constantly has to adjust to extreme temperature changes. Moreover, the air dries out extremely, which irritates your mucous membranes.

Set your air conditioner to a maximum of 6 to 8 degrees below the outside temperature. On a hot summer day of 30 degrees, this means a setting of 22 to 24 degrees. This prevents temperature shocks and keeps your energy bill manageable.

How does an incorrect air conditioning setting dramatically increase your energy costs?

Many people underestimate how much a difference of a few degrees costs. An air conditioner set to 20 degrees instead of 24 degrees can increase your energy bill by 25 to 30 percent. For an average household, this means hundreds of euros extra per year, especially during long heatwaves.

Use a programmable thermostat or the timer function of your air conditioner to automatically adjust the temperature. Increase the setting by 2 degrees when you are not at home and let the system cool down to your desired temperature an hour before you return.

What is the ideal temperature to set your air conditioner to?

The ideal air conditioning temperature is between 22 and 24 degrees Celsius. This range offers optimal comfort without unnecessary energy waste. At 22 degrees, you experience pleasant cooling, while 24 degrees still provides refreshment but is more energy-efficient.

The exact setting depends on various factors:

Outdoor temperature: maintain a maximum difference of 8 degrees
Humidity: at high humidity, 24 degrees already feels comfortable
Home insulation: well-insulated rooms cool down faster
Number of people: more people means more heat production
Sunlight: rooms with many windows often require a lower setting

What temperature should you set on your air conditioner in the summer?

In the summer, 24 degrees is the most energy-efficient choice that still offers comfort. On extremely hot days of 35 degrees or more, you may switch to 22 degrees, but never go lower than that for daily use.

Different situations require adjusted settings. During the day, when the sun shines on your windows, 23 degrees may be necessary. In the early morning or late evening, 25 degrees is often sufficient. Also pay attention to the humidity: at high humidity, 24 degrees feels cooler than in dry air.

A good rule is to start at 25 degrees and gradually lower it until you feel comfortable. This prevents you from immediately reaching for a temperature that is too low out of habit.

How does the optimal air conditioning temperature differ between day and night?

During the night, your body needs a lower temperature for good sleep. The ideal bedroom temperature is between 18 and 21 degrees, which means you can set your air conditioner 2 to 3 degrees lower at night than during the day.

An effective night strategy works as follows:

Start at 24 degrees when you go to bed
Let the air conditioning automatically drop to 21 degrees after an hour
Raise the temperature back to 23 degrees an hour before you get up.
Use your air conditioner's sleep mode for quieter operation

Avoid running the air conditioner at full power all night. This dries out the air too much and can actually worsen your sleep quality. Use the timer function or a smart thermostat instead.

How much energy do you save by setting your air conditioner 1 degree higher?

Setting the temperature up by every degree saves 6 to 8 percent on your energy consumption. For an average air conditioner that consumes 2000 watts, this means a saving of 120 to 160 watts per hour. Over an entire summer, this can add up to a difference of tens of euros.

The savings become even greater with extreme temperature differences. An air conditioner that goes from 20 to 24 degrees consumes approximately 25 percent less energy. With an energy bill of 400 euros for air conditioning use, this means a saving of 100 euros per season.

Modern air conditioners with inverter technology save even more because they adjust their power output to the desired temperature. These systems operate more efficiently at higher settings and can switch to an energy-saving mode at 24 degrees.

Which factors determine the best air conditioning temperature for your situation?

Your personal ideal temperature depends on several factors that together determine your comfort. Age plays a role: older people often require a higher temperature, while young people prefer cooler settings.

Your activity level also makes a difference. In a home office where you sit still, 23 degrees feels comfortable. In a living room where you move around, 25 degrees might already be sufficient. Clothing is equally important: wear lighter clothing instead of turning down the air conditioning.

The characteristics of your space also determine a lot:

Ceiling height: high rooms require lower settings
Window surface area: a lot of glass means more heat radiation
Insulation quality: poorly insulated rooms lose coolness faster
Location: south-facing rooms get warmer than north-facing rooms

How The Concrete Driller helps with air conditioning system

We specialize in the expert installation of monoblock air conditioners and ensure that your air conditioner functions optimally for maximum comfort and energy savings. Our experienced professionals drill the necessary holes in brick or concrete walls with minimal disruption.

What we do for you:

Professional drilling of air supply and exhaust holes
Installation of facade grilles for a neat finish
Optional drilling for condensate drain
Protection of walls and floors during work
Installation possible on any floor
The workspace is left tidy.

Do you have questions about air conditioning installation or would you like to request a quote? Then please contact us. touch with Call on us for professional advice and expert execution of your project.

What temperature should you set on an air conditioner?