With the arrival of summer and the increasingly torrid temperatures to face, the air conditioner becomes an almost obligatory choice for many. Even if the use of air conditioners should be limited to contain energy consumption and reduce the environmental impact, it is not always possible to do without it, especially during working hours. When it is necessary to install one, however we can choose it with awareness, preferring efficient, performing and as sustainable models.
In 2025, the market offers numerous models of air conditioners with increasingly advanced technologies, designed not only to cool quickly, but also to save energy and reduce noise pollution.
How to choose the right air conditioner: what to evaluate before the purchase
When choosing an air conditioner, it is not enough to look at the price. In fact, it is important to evaluate a series of factors to find the model that best suits our needs and ensure comfort, energy saving and a reduced environmental impact.
The first aspect to consider is the size of the environment to be air conditioned. Each room needs specific power to be effectively refreshed, and this is measured in BTU/h (British thermal unit for now). Here is an indicative table to orient yourself:
Choosing an too powerful air conditioner compared to the room will lead to unnecessary waste, while a undersized model will not be able to cool effectively. The right balance, on the other hand, guarantees comfort and consumption optimization.
Another element to consider is the inverter technology, now present in most modern models. Unlike old air conditioners, the inverter continuously regulates the power of the compressor, keeping the set temperature stable and reducing energy consumption up to 30%. This translates into a concrete saving on the electric bill and a lower impact on the environment.
Silence also plays an important role, especially for those who install the air conditioner in the bedroom or in environments where quiet particular is required. The most performing models manage to work with a noise of less than 20 decibels, guaranteeing quiet sleeps even on the hottest nights.
Finally, for a truly sustainable purchase, it is good to choose models with high energy efficiency (in class A ++ or A +++) and equipped with low climate impact refrigerant gases.
A often underestimated, but increasingly relevant aspect, is compatibility with photovoltaic systems. More and more models are designed to integrate with the energy produced by solar panels, allowing you to feed the air conditioner with clean and free energy. This integration significantly reduces consumption from the electrical network, increases the energy autonomy of the house and contributes to containing the costs in the bill, making the air conditioning more sustainable and convenient over time.
Where to install it and how to keep it efficient
The position of the internal unit is also essential to ensure efficient functioning of the air conditioner. Ideally, it should be installed at the top of the wall, far from heat sources (such as lamps or appliances) and particularly humid areas, in order to better distribute fresh air in the environment. Likewise, the external unit must be positioned in a well -ventilated and shaded place, preferably easily accessible to facilitate maintenance operations.
If you live in a condominium, it is important to verify the condominium regulation before installation: there may be limitations regarding the distance from the balconies of the neighbors, or aesthetic constraints related to the decoration of the facade.
Finally, to maintain high performance over time, it is essential to perform correct maintenance. During periods of intensive use, it is advisable to clean the filters every month. In addition, it is good to periodically check the level of the refrigerant gas and rely on a qualified technician at least once a year for a complete check-up of the system. Regular maintenance not only improves efficiency, but also lengthens the life of the air conditioner.
But we now come to the best 2025 air conditioners, chosen by the Greenme editorial staff.
The best air conditioners 2025
Viessmann-Vitoclima 232-S (monosplit)
The Vitoclima 232-S is the Monosplit model of the Viessmann range, designed to cool a single environment with maximum efficiency and minimum environmental impact. With energy class A +++/A ++, it combines a compact design with advanced technologies to ensure constant and silent comfort. The intelligent sensors detect the presence and temperature of the room, automatically optimizing consumption thanks to the inverter technology.
It includes a cold plasma sanitization function, useful for improving air quality by reducing allergens and pathogens. Integrated Wi-Fi control allows simple and remote management via app.
All Vitoclima models can be powered directly by self -produced solar energy with the photovoltaic system, thus guaranteeing sustainable use and a clear reduction in energy costs.
This integration, if installed through the best professionals such as partner Viessmann installers, also allows you to increase the value of the property. Improvement guaranteed also by the seal “Powered by Viessmann”, testimony of a technological intervention that brings value and well -being to your home.
Viessmann-Vitoclima 300-S/He (Multisplit)
For those who want to air conditioning multiple environments with a single system, the Vitoclima 300-S/He is the ideal multisplit solution. It is able to manage up to five internal units with a single external unit, particularly compact, silent and efficient thanks to the new generation M3. The optimized compressor significantly reduces noise, making it suitable for installations in residential areas.
The model is classified in energy class A ++/A+, uses R32 ecological refrigerant gases and includes standard Wi-Fi management, for a smart and sustainable remote control.
As for the whole Vitoclima range, the 300-S/Ha can also be fed with self-produced solar energy via photovoltaic system, reducing waste and costs.
Relying on partners Viessmann partners for this integration allows you to enhance the entire domestic system, increasing the efficiency and value of the property. The seal “Powered by Viessmann” certifies its quality and orientation towards a more advanced and sustainable home.
Fujitsu – Ashh12kgtg/AOHH12KGCG
Conditioner General Fujitsu Ashh12kgTG/AOHH12KGCG offers a cooling power of 3.4 kW and stands out for its high energy efficiency, with classes A +++ both in cooling and in heating.
Compact and modern design with rounded lines, it integrates with elegance in any environment, enhancing the aesthetic of the room.
Equipped with advanced technology, including a high density heat exchanger and Ecological R32 refrigerant, it guarantees high performance with a low environmental impact. The reduced width of the internal unit, only 21.5 cm, makes it suitable also for the most contained spaces, while compatibility with the third generation Wi-Fi module allows simple and smart control via app.
Mitsubishi Electric-MSZ-AY25VGKP/MUZ-AY25VG
The AY line by Mitsubishi Electric is also confirmed in 2025 among the most appreciated for those looking for an efficient, compact and sustainable air conditioner. The MSZ-AY25VGKP/MUZ-AY25VG model, designed for small and medium-sized environments, offers a cooling power of 2.5 kW and an energy class A +++ for cooling, with A ++ in heating.
One of its strengths is the remarkable silence: the internal unit can go down to only 18 db (a) in ultra-site mode, making it ideal also for bedrooms or environments where the maximum quiet is required. The compact and elegant design, available in satin white finish, adapts discreetly to any type of furniture.
It is equipped with integrated Wi-Fi remote control via app and quad plus plasma filter, an advanced system that breaks down viruses, bacteria, allergens and particulates, improving air quality in the house. Use the R32 refrigerant, more ecological than the previous ones, and guarantees high performance also in the winter season thanks to the inverter technology and the effective heating function.
A compact and versatile solution, perfect for those looking for high performance and respect for the environment in a single product.
Mitsubishi Electric-MSZ-AY35VGK/MUZ-AY35VG
For those who want to air conditioning larger spaces, the MSZ-AY35VGK/MUZ-AY35VG model of the same range represents the ideal alternative. With a cooling power of 3.5 kW, it maintains high efficiency standards with energy class A +++ in cooling and A ++ in heating, offering optimal coverage for rooms up to about 30–35 m².
Also in this case, silence is a key feature: the minimum level of noise of the internal unit is just 18 dB (a), guaranteeing acoustic comfort both day and night. The aesthetic remains clean and modern, with the usual linear front panel and opaque finish.
Like the lower model, the AY35VGK is also equipped with integrated Wi-Fi, inverter technology for continuous adjustment of the temperature and the quad plus plasma filter, effective in holding micro-particles and harmful substances present in the air. The R32 refrigerant gas ensures less environmental impact, contributing to a more sustainable air conditioning.
A high -performance air conditioner, designed for those who want to combine efficiency, reliability and design in a single solution, without compromise on sustainability and air quality.
Haier Expert AS25XCAHRA/1U25S2SM1FA
With one of the most competitive quality-price ratio of 2025, the Haier Expert As25xCahra / 1u25s2sm1fa is positioned as one of the best purchases of the year. This Split air conditioner combines excellent performance with advanced functionality, offering a cooling power of 2.8 kW and an energy efficiency of class A +++ both in summer and in winter.
Designed to ensure comfort and safety, it integrates numerous technologies for sanitation of the air, including UVC Pro (which neutralizes viruses and bacteria, including the Sars-Cov-2 up to 99.99%) and steri-CLEAN function at 56 ° C, which sterilizes the internal surfaces of the air conditioner. There is also the self-trialing system, which reduces the formation of mold and bad smells.
The internal unit is elegant, compact (width 89.5 cm), and equipped with an intelligent “i-feel” sensor, able to automatically adjust temperature and air flow based on the user’s position. The Eco Sensor function helps to optimize consumption when the environment is empty.
Remote control is guaranteed by integrated Wi-Fi, while the air flow is managed through Coanda Plus technology, for a homogeneous diffusion throughout the room. Like all the most recent models, it uses R32 gases, with a reduced environmental impact.
An intelligent, safe and efficient air conditioner, ideal for those looking for an advanced and accessible solution, without sacrificing quality.
The models selected in this guide represent some of the best solutions available today on the market, capable of guaranteeing comfort, savings and attention to the environment. Whether you are looking for a single -room room for a single room or a multisplit system for the whole house, the important thing is to move towards reliable, high efficiency products and possibly integrated with renewable sources.
