Yes, you can really save on your air conditioning costs in the summer with solar panels, but it depends on your system and usage. Solar panels actually produce the most power on warm, sunny days, which coincides well with the times when you need the air conditioning the most. In this article, we answer the most frequently asked questions about air conditioning and solar panels, from power consumption to nighttime use.

How much electricity does an air conditioner actually consume?

An average split-unit air conditioner consumes between 0,5 and 3,5 kilowatt-hours (kWh) per hour, depending on the power and settings. A small air conditioner for a single room is on the low side, while a powerful system for a larger home or office consumes significantly more. Over a full day of use, this can quickly add up to 10 to 20 kWh or more.

Actual consumption is determined by a number of factors: the outside temperature, how well your house is insulated, the desired indoor temperature, and how efficient the air conditioner itself is. Modern air conditioning systems with a high SEER (Seasonal Energy Efficiency Ratio) value are significantly more economical than older models. An air conditioner with a SEER value of 8 or higher is considered energy-efficient and is better suited for use in combination with solar panels.

Can solar panels supply enough power for an air conditioner?

In most cases, solar panels can supply enough power during the day to run an air conditioner, provided your installation is large enough. An average solar panel delivers between 300 and 450 Watt-peak. Therefore, for a 1 kW air conditioner, you need at least three to four panels positioned optimally in the sun at that time.

On a sunny summer day, an installation of eight to twelve panels typically produces enough power to run both the air conditioning and other appliances in the house. The advantage is that solar panels have production peaks between 10:00 AM and 16:00 PM, precisely the hottest hours of the day. That makes the combination practical and logical.

Do you want to know which system best suits your situation? Via the air conditioning selection guide you will quickly find suitable advice.

What is the difference between an air conditioner connected directly to solar panels versus the grid?

The biggest difference lies in the source of the power and the associated costs. When your air conditioner runs on electricity generated by your solar panels at that moment, you are essentially using free energy. If the air conditioner runs on power from the grid, you pay the current electricity price per kWh, which can add up significantly during the summer with prolonged use.

Direct solar energy

With direct solar energy, you consume the electricity the moment the panels generate it. This is the cheapest way to run the air conditioner. You do not need a battery, and no storage losses are lost. The disadvantage is that you are dependent on the sun: in cloudy weather or in the evening, you fall back on the grid.

Power from the grid

If your solar panels are not producing enough at that moment, your system automatically switches to grid power. This guarantees that the air conditioner always works, but it also means that you simply pay for that portion of the consumption. With a smart energy management system, you can optimize this by preferably running the air conditioner when the sun is shining.

How much can you save on cooling costs with solar panels?

The exact savings depend on how often you use the air conditioning, the size of your solar panel installation, and how much sun your region receives. In practice, households with solar panels can significantly reduce their air conditioning costs during the summer months, sometimes by more than half compared to a situation without solar energy.

Suppose your air conditioner runs for an average of four hours a day at a power of 1 kW; then you consume 4 kWh per day. If your solar panels generate that 4 kWh entirely, you save the full electricity costs for those hours. Over a three-month summer, that adds up to a noticeable saving on your energy bill.

Do you want to make an estimate of what this yields for your situation? Then use the pricing tool to make a calculation based on your specific circumstances.

Which type of air conditioner works best with solar panels?

An inverter-controlled split-unit air conditioner works best in combination with solar panels. This type continuously adjusts its power output based on demand, which means that power consumption is flexible and better aligns with the fluctuating production of solar panels.

Fixed-compressor air conditioning systems switch on and off at full power, which is less compatible with the erratic production of solar panels. An inverter air conditioner, on the other hand, can run at lower power when less solar energy is available, meaning you are less likely to fall back on grid power.

In addition, a high energy class is important. Preferably choose a model with energy class A++ or higher. The more efficient the air conditioner, the smaller the solar panel installation you need to power it.

Can a solar-powered air conditioner also be used at night?

Without a home battery, you cannot run an air conditioner on solar energy at night, because solar panels only produce power during the day. In that case, you automatically use power from the electricity grid at night. If you want to be independent of the grid at night as well, you need a home battery.

A home battery stores the excess solar energy that you do not use immediately during the day. You can then use that stored energy for the air conditioning in the evening and at night. This makes the system much more self-sufficient, but does require a higher upfront investment.

For most households, the practical solution is to schedule the air conditioning as smartly as possible during the day: setting cooling periods during the hours with the most solar production, so that the house is already sufficiently cooled by the evening. Modern air conditioning systems with a timer or app control make this easy.

How De Betonboorder helps with the installation of your air conditioner

Installing an air conditioner might sound simple, but in practice, it always involves drilling. The indoor and outdoor units must be connected via pipes that go through the wall, and this requires a precisely drilled hole in concrete, stone, or another structure. That is exactly what we help you with.

We drill the penetration for your air conditioning pipes through concrete, masonry, or other structures.
We work with diamond core drills for a clean and precise result without cracking.
In many cases, we schedule the job within two days.
After work, we leave the workplace neat and tidy.
We work throughout the Netherlands with a nationwide network of experienced professionals.

Want to get started quickly? Contact us and we respond within 24 hours to schedule the job. Or first check out more about our services at the website of De Betonboorder.

Air conditioning powered by solar panels: do you really save on cooling costs in the summer?