What is the quietest window ac unit



It is not only in your own interest that the air conditioning is quiet. So it doesn't get on your nerves and lets you sleep peacefully. But it is also stipulated that air conditioning must not cause too much noise.

Noises above 35 dB (A) during the day and 25 dB (A) at night should not be transmitted inside a building.

You also have to clarify whether the air conditioning system is in a purely residential area and thus a maximum of 50 dB (A) during the day and 35 dB (A) at night, in a general residential area with limits of 55 dB (A) during the day and 40 dB (A) at night or whether completely different limit values ​​apply. For this purpose, the Federal Immission Control Act and the TA Lärm must be observed. As a rule, however, it is not the volume that is measured on the device itself, but the volume that reaches the neighbors. In addition, municipalities can issue additional ordinances.

In addition, there are a few points to consider: In Tenement houses the landlord must give permission before air conditioning can be installed. As a rule, the cost of the air conditioning is borne by the tenant. In Condominiums In most cases, the other apartment owners must first agree to the installation of an air conditioning system.

That quiet air conditioning is a blessing on hot summer days - with an emphasis on quiet, and not just because of all the regulations - is obvious. The quiet operation allows you to really enjoy the air conditioning. You know that at the latest when you have been annoyed by a loud air conditioner.

Would you prefer a quiet fan instead? Here is a selection of quiet models.

If the volume of the previous air conditioning is the only thing that you don't like about it, you can also try noise-masking sleepbuds * or noise-canceling headphones. These noise-filtering or noise-canceling headphones can be used to concentrate or to sleep undisturbed.

But now back to the topic of quiet air conditioning - with more details on the models presented above:


De’Longhi PAC AN112 Silent

The De’Longhi PAC AN112 Silent is a quiet mobile air conditioning system with a dehumidifying function. This means that - in contrast to a split air conditioning system - it consists of a single device that is set up in the room and can be flexibly moved - to where it is needed. This quiet monoblock air conditioner has 3 speed levels that work with a volume between 47 and 50 dB (A). The cooling capacity is 11,000 BTU / h.

Another quiet air conditioning system from De’Longhi with a sound pressure level between 47 and 50 dB (A) is the Pinguino PAC EL98 ECO Real Feel *.

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Remko RKL 495 DC

The Remko RKL 495 DC is a quiet mobile split air conditioner. This means that - like a regular split air conditioner - it consists of two parts: an indoor unit and an outdoor unit - however, it is not permanently installed, but can be moved freely. The air conditioning system is also equipped with inverter technology, which enables energy-efficient operation through stepless power adjustment.

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De’Longhi Pac N87 Silent

The De’Longhi Pac N87 Silent is also a fairly quiet mobile air conditioner. The sound pressure level ranges from 48 to 52 dB (A) and the sound power level is 63 dB (A). There is also a dehumidification function and a timer function is also integrated.

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Argo Relax Style

The Argo Relax Style is also a quiet mobile air conditioner. It has the 3 functions of cooling, ventilation and air dehumidification. The cooling capacity is 10,000 BTU / h. The air conditioning system is also equipped with a sleep mode, can oscillate and has a washable air filter.

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De’Longhi Silent PAC EX100

The De’Longhi Silent PAC EX100 also joins the quiet mobile air conditioning units. It has a sound pressure level between 49 and 53 dB (A). This quiet mobile air conditioning system uses the comparatively environmentally friendly coolant R290.

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Trotec PAC 2010 E

The Trotec PAC 2010 E is a relatively quiet mobile air conditioning system. The volume is 51 dB (A) at level 1, measured at a distance of 1 m. It has both a cooling function and a ventilation and dehumidifying function.

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Trotec PAC 3000 X

The Trotec PAC 3000 X is also a relatively quiet local air conditioner. The volume is 52 dB (A) at the maximum level at a distance of 1 m. Night mode, timer and oscillation are also integrated here.

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Daikin Emura

The Daikin Emura with the indoor unit FTXJ25MW and the outdoor unit RXJ25M is a very quiet split air conditioner. In whisper mode, the indoor unit has only 19 dB (A) and the outdoor unit just 43 dB (A). The air conditioning works particularly efficiently.

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Mitsubishi MSZ-LN35VGV-E1 + MUZ-LN35VG-E1

This Mitsubishi air conditioner consists of 2 units, the indoor unit MSZ-LN35VGV-E1 and the outdoor unit MUZ-LN35VG-E1. The indoor unit has between 19 and 43 dB (A) and the external unit has a volume of 49 dB (A).

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Daikin Perfera FTXM20N + RXM20N9

The quiet Daikin Perfera split air conditioning system, consisting of the indoor unit FTXM20N and the outdoor unit RXM20N9, is also one of the quietest air conditioning systems available. The indoor unit is just as quiet as the previous ones at 19 dB (A) and the outdoor unit is at the top of the field with just 46 dB (A). This is always in demand when the air conditioning in the residential area must not attract negative attention.

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Mitsubishi Linea Smart MSZ-HR35VF + MUZ-HR35VF

The combination of Mitsubishi MSZ-HR35VF + MUZ-HR35VF results in a quiet split air conditioning system. The indoor unit has a volume between 22 and 46 dB (A) and the outdoor unit has a volume of 50 dB (A).

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Mitsubishi Kirigamine MSZ-LN25VG + MSZ-LN35VG + MXZ2F42VF

A quiet multi-split air conditioning system can be found in the Mitsubishi Kirigamine MSZ-LN25VG + MSZ-LN35VG + MXZ2F42VF. The two indoor units each produce between 19 and 42 dB (A) or 19 and 43 dB (A) and the outdoor unit has a sound pressure level of 44 dB (A).

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Panasonic FZ25UKE

Another quiet inverter split air conditioner is the Panasonic FZ25UKE. The indoor unit quietly produces 20 dB (A) at the lowest level and the outdoor unit operates at 48 dB (A). The air conditioner uses R32 refrigerant.

The big brother, the Panasonic FZ35UKE, has the same volume characteristics in terms of minimum volume, only the indoor unit is 1 dB (A) louder in maximum operation. The Panasonic FZ35UKE provides 3.9 kW compared to the 3 kW of the Panasonic FZ25UKE and is therefore the right choice for somewhat larger rooms.

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Mitsubishi M series MSZ-SF35VE + MUZ-SF35VE

The combination of the Mitsubishi MSZ-SF35VE and the MUZ-SF35VE from the M series is a quiet inverter split air conditioner. The indoor unit produces between 21 and 42 dB (A) and the outdoor unit is 49 dB (A). In addition to cooling the room, this air conditioner can also take over heating.

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General functioning of an air conditioning system

The function of the air conditioning system is based on a cooling circuit for which a refrigerant is required. The refrigerant enters an evaporator in liquid form, in which it - as the name suggests - evaporates. It absorbs heat and in return cools the room temperature. The evaporated refrigerant is fed into a compressor, which compresses it, i.e. compresses it or increases the pressure. This further heats the gaseous coolant. The gas now enters the condenser. There the coolant is cooled and condensed by the ambient air, i.e. liquefies again. This is where warm air is created. The cooling effect of an air conditioning system is based on transporting this very warm air outside - it has to be released as exhaust air to the outside air outside the living space.

How exactly the air conditioning system does this differs between the different types of air conditioning systems. With a split air conditioning system, part of the cooling circuit is moved outside - that's why you need two devices. In a mobile air conditioning system, a hose is used to convey the exhaust air outside. Window air conditioners do this job differently. More about the different types of air conditioning systems can be found below.

Different types of air conditioners

Air conditioning systems are available in various designs, the most common of which are monoblock or mobile air conditioning systems, split air conditioning systems, window air conditioning systems and compact air conditioning systems. All of these types are decentralized air conditioning systems and, in contrast to central air conditioning systems, can be easily installed in a building at a later date without having to seriously damage the building fabric. Some of these air conditioning systems can also be put into operation completely without any modification work.

With regard to the volume, there are sometimes large differences between the various types of air conditioning systems.

Mobile air conditioning: the monoblock air conditioning

The term mobile air conditioning generally means a monoblock air conditioning system. As the name monoblock implies, it is an air conditioner that consists of a single device - unlike a split air conditioner. This air conditioner can be set up relatively flexibly and moved between different rooms.

Mobile air conditioning systems are generally louder than split air conditioning systems, as all the components that cause noise are located inside the living space.

Most mobile air conditioning systems require the exhaust air to be routed outside with a hose, but there are also mobile air conditioning systems without an exhaust air hose.

Mobile air conditioning with exhaust hose

A mobile air conditioner with an exhaust hose is an ordinary monblock air conditioner. All components of the air conditioning system are combined in one device instead of being distributed over an indoor and an outdoor unit.

The exhaust hose is used to transport warm air outside. This is the only way to effectively cool the room; devices without an exhaust hose cannot do that. The hose must lead the exhaust air to the outside through a window gap. Otherwise, the window must be sealed as well as possible. Since the window can rarely be sealed completely satisfactorily, warm air from the outside penetrates through the gap again.

As a result, monoblock air conditioners are generally less efficient than split air conditioners. Since the chiller is inside, they are also louder.

The advantage of a mobile air conditioner is that you don't have to get permission from anyone to set up such a device. If the landlord or the rest of the owners have not approved a split air conditioner, a mobile air conditioner can be used.

In addition, in contrast to the fan, the next alternative, the mobile air conditioning actually cools the air.

Nevertheless, due to the efficiency losses, a mobile split air conditioner may be the better choice.

Air conditioning without a hose

Air conditioning without a hose is too good to be true - unfortunately the concept does not work. What runs under air conditioning without an exhaust hose is usually one of two options: A real monoblock air conditioning system without an exhaust hose or an air cooler.

The monoblock air conditioner without a hose cannot realistically cool the room. Because, based on physical laws, the waste heat from the compressor corresponds at least to the cooling capacity. The energy that the compressor uses for cooling heats up the compressor and this heat has to escape somewhere - in the absence of an exhaust air hose, exactly back into the room that is to be air-conditioned. Only in the very theoretical case does the temperature remain constant. In reality, the room is effectively heated due to the lower efficiency.

The second possibility is an air cooler that works with water or ice and is supposed to act as a kind of "air conditioning" through evaporative cooling. On the one hand, this is not particularly effective and an air cooler based on this principle also has the side effect of humidifying the room air. That is not absolutely desirable. On the one hand, this can contribute to the formation of mold, on the other hand, high humidity in combination with high temperature, as is known, makes itself noticeable as an unpleasant sultriness.

Split air conditioning

A split air conditioner is divided into an indoor unit and an outdoor unit. The two components are connected by pipes, for which a hole has to be drilled through the house wall.

The outdoor unit contains the compressor that compresses the refrigerant. Accordingly, this step takes place outdoors. The refrigerant is fed into the indoor unit in liquid form, where it absorbs heat from the room and evaporates in the process. The room temperature cools down. The refrigerant is returned to the outdoor unit in vapor form. There it is compressed by the compressor, gives off heat to the environment and becomes liquid again. The cycle starts all over again. Warm air is transported outside.

Modern split air conditioners are generally very quiet. The indoor units hardly interfere and the outdoor units also feature surprisingly quiet models.

Split air conditioning systems can be further subdivided:

Inverter split air conditioning

The term inverter in the inverter split air conditioning system does not mean any other mode of operation, but simply states that the temperature is controlled continuously instead of according to an on / off principle.

This makes the air conditioning more efficient and also quieter.

Multi-split air conditioning

In a multi-split air conditioner, one outdoor unit is connected to multiple indoor units.

Mobile split air conditioner

A mobile split air conditioner is a split air conditioner with a slightly different division of the components. The compressor, the loudest component, is inside. Only the condenser and a fan are outsourced to the outdoor unit.

The mobile split air conditioning does not have to be permanently installed. Instead, the comparatively small outdoor unit is placed on the balcony, terrace or wherever possible outside.

Compared to a split air conditioner, a mobile split air conditioner is louder because the compressor stays inside the room.

Window air conditioning

A window air conditioning system, like the mobile air conditioning system, also consists of only one device, but directs the exhaust air directly outside. It requires either a window opening or a wall opening.

With a window air conditioning system, the loudest component of the air conditioning system remains in the room, the air conditioning system is not mobile and structural measures are also required. The window air conditioner thus combines the disadvantages of split air conditioning systems and mobile air conditioning systems.

The window air conditioner is also louder than a split air conditioner.

Inverter air conditioning

Inverter air conditioning does not actually refer to a specific type of air conditioning system, but rather the technology used to regulate the temperature.

Air conditioning systems without an inverter are cooled at full throttle until the set temperature is reached. The air conditioning then switches itself off and only resumes its work when the temperature rises again - and cools down loudly.

In order to achieve an infinitely variable output control, the following is applied to the compressor: With the on / off function, the compressor always rotates at a constant speed. With inverter technology, the speed at which the compressor rotates varies depending on the cooling requirement.

The advantage of the inverter control is that the temperature is continuously controlled so that there are no strong temperature fluctuations, which are then reacted to with loud cooling. This means that inverter air conditioning systems are significantly quieter. This procedure also saves a lot of electricity. Inverter air conditioning systems are clearly superior, especially when it comes to efficiency.

Compact air conditioning

The term compact air conditioner is also not very clearly delineated. The term compact air conditioning system is often used to combine monoblock air conditioning systems and window air conditioning systems, i.e. all air conditioning systems that only consist of one unit.

Volume in air conditioning systems - conclusion

In conclusion, it can be said that people who are particularly sensitive to noise, who are looking for a quiet air conditioning system for the bedroom or who simply want such a quiet air conditioning system, can be advised to use a split air conditioning system.

If a split air conditioning system is not available, you can look around at the mobile air conditioning systems in the form of a monoblock or a mobile split air conditioning system.No general statement can be made here, the volume simply depends on the model and it is advisable to compare different air conditioners.

Soundproofing in an air conditioning system

Many people wonder whether soundproofing or soundproofing is possible in an air conditioning system.

Complete soundproofing is likely to be difficult, but soundproofing is definitely possible.

One starting point focuses on mounting the air conditioner on the wall. Because if this is not optimally designed, unpleasant vibrations can be transferred to the wall. For this reason, there are special anti-vibration feet for the wall bracket for the soundproofing of air conditioning systems, like this one here *.

Quiet air conditioning for sleeping at night

If you are looking for a quiet air conditioning system for the bedroom so that you can sleep in peace and quiet at night without breaking a sweat, a split air conditioning system is naturally recommended.

Some air conditioning systems have a special whisper or silent mode, with which the volume can be reduced by a few decibels.

Otherwise, depending on the sensitivity, you can say that noises below 35 dB (A) are no longer perceived as annoying and should therefore be suitable for sleeping.

The quietest indoor units in split air conditioning systems are around 20 dB (A), which should be very quiet or barely audible.

If you don't like the thought of sleeping with headphones right away, you can stick with your previous device and try noise-masking sleepbuds * or noise-canceling headphones. These special headphones suppress or filter out disturbing noises.

So nothing stands in the way of a quiet night!