Bathroom ventilation
Proper ventilation in the bathroom with up to 94% heat recovery
After showering, humidity in the bathroom can rise to well over 80 percent. This can be problematic in a bathroom without windows and with irregular air exchange. Only with suitable bathroom ventilation can you ensure balanced air exchange and maintain ideal air quality in the bathroom without creating a breeding ground for mold.
We will show you the different options available for bathroom ventilation and which is the most economical in terms of energy consumption.
What kind of ventilation in the bathroom?
Bathroom ventilation systems differ mainly in how they work. The various options include central and decentralized bathroom ventilation with and without heat recovery.
Exhaust air systems are a cost-effective option, but they do not retain room heat. These systems extract humid and stale air from the bathroom. Fresh air is usually drawn in from the living area only if there are no additional air inlets in the exterior walls.
Ventilation in the bathroom can also be energy-efficient thanks to heat recovery via heat storage. Finally, central devices for the entire home can also be used. All the options for bathroom ventilation are discussed in more detail below.
Ventilation without heat recoveryThe solution: for bathrooms with and without windows
Exhaust air systems in bathrooms
The installation of exhaust air systems is usually simple and inexpensive. They can also be installed during renovation work without much effort using core drilling. However, the devices do not operate on the principle of heat recovery, which means that valuable heat can be lost from the bathroom.
Exhaust air in the bathroom can still be demand-driven. Thanks to app control and integrated sensors, the inVENTer Pulsar and Aviant exhaust fans ventilate according to usage. Thanks to their low power consumption and whisper-quiet operation, both devices are suitable models for ventilating bathrooms with windows.
Exhaust air systems for interior bathrooms without windows
If the bathroom has no windows, exhaust air systems are a suitable solution for ventilation in the bathroom. In any case, ventilation in interior bathrooms and toilet rooms is mandatory under DIN 18017-3. In addition to the inVENTer PAX, the Taris exhaust air unit is also suitable for this purpose. As a powerful exhaust air unit, it is suitable for the exhaust air shaft or the exterior wall. It can be installed on the wall or ceiling and is suitable for surface-mounted and flush-mounted variants.
Exhaust air systems are particularly efficient when humidity sensors automatically detect when the system should start ventilating. This is possible, for example, with an integrated hygrometer or other humidity measurements.
Bathroom ventilation with heat recoveryThe solution: your 3-in-1 bathroom ventilation system
Ventilation with heat recovery has the decisive advantage that stale air can be regularly replaced with fresh air. The supply and exhaust air system operates in alternating mode and the thermal storage mass is already heated during the exhaust air phase, which means that the cold supply air can be heated later. This saves valuable heating costs!
After showering or bathing, the air is almost thick with moisture. If you don’t ventilate now, you risk mold growth in the bathroom. However, when you open the window, not only does the humidity escape, but valuable heat also escapes from the room. In winter, the bathroom often becomes uncomfortably cold after just a few minutes. It doesn’t have to be that way! To save heating costs and do your part for climate protection, we now have the solution.
The innovative bathroom fan set provides you with a cozy feel-good experience for your bathroom atmosphere and is also energy-saving.
iV-Twin+The single-room ventilator
The iV-Twin+ combines two fans in one. Supply and exhaust air flows are separated vertically from each other. Thanks to its two ceramic heat exchangers, the iV-Twin+ has a high heat recovery rate of 94%. This makes it perfect for use as a bathroom fan. Installation using core drilling makes bathroom renovation much easier.
sMoveThe controller
Up to 4 ventilation units can be intuitively adjusted with the sMove. Its modern design with a flat housing allows it to blend discreetly into your bathroom environment. Preset ventilation levels and a pause function can be conveniently adjusted using the touch & slide function. The functionality of the sMove can be expanded with additional sensors.
HYG18 The hygrostat
To monitor humidity in the bathroom, the room hygrostat measures air humidity and temperature. Both values can be read on the clear LED display. If the air humidity exceeds the set value, the fan automatically switches to exhaust mode until normal air humidity is restored.
Ventilation device
Steuerung
Hygrostat
Your contribution to environmental protection
By using the iV Twin+ in your bathroom, you can reduce CO2 emissions by approx. 60 kg per year!
Technical data
| Wall thickness min. [mm] | 270 |
| Wall opening [mm] | 225 |
| Heat recovery [%] | 94 |
| Air volume flow (heat recovery mode) [m³/h] | 5 – 23 |
| Exhaust air volume flow [m³/h] | 10 – 45 |
| Power consumption [W] | 0,5 – 3 |
| Specific fan power [W/(m³/h)] | 0,18 |
| Input voltage [V DC] | 6 – 16 |
| Standard sound level difference [dB] | 45 – 56 |
| Energy efficiency class | A+ / A |
| Protection class | IPX4 |
| Protection class | III |
Accessories
Downloads
| File | Action |
|---|---|
| Flyer iV-Twin+ | Download |
| Brochure 3in1 Bathroom ventilation (iV-Twin+, sMove controller, hygrostat in a set) | Download |
| inVENTer product overview | Download |
| Installation instructions iV-Twin+ | Download |
| Picture guide insert iV-Twin+ insert | Download |
| Picture guide Twin+ Corner external finish | Download |
| Picture guide cleaning and maintenance iV-Twin+ | Download |
Bathroom ventilation in micro-apartmentsThe solution: inVENTer PAX
The inVENTer PAX is the ventilation solution for hotel rooms, small apartments, nursing homes, etc. The device can be used on individual floors, in specific sections, or in individual rooms, eliminating the need for a large central system.
The ventilation system is installed in the exhaust air rooms, usually in interior bathrooms. There, the stale air is drawn in and removed. From the bathroom, the ventilation system can ventilate several rooms at the same time via flat ducts. The fresh air enters the supply air room in the same way, where it is warmed by the heat exchanger and released into the supply air room. An integrated humidity sensor protects against excessive moisture in the bathroom.
Did you know?
The inVENTer PAX is a low-noise device that is ideal for projects with high sound insulation requirements. The device also meets the requirements of DIN 18017-3.
Frequently asked questions about bathroom ventilation
Refurbishment
Can I retrofit a ventilation system in the bathroom?
Yes, an exhaust air system or a decentralized ventilation system is recommended for retrofitting, as these ventilation options are easier to install retrospectively.
Duty
Is ventilation in the bathroom mandatory?
According to DIN 18017 and various guidelines issued by the federal states, ventilation is mandatory if the bathroom does not have a window. Only with a powerful ventilation system can moisture in the bathroom be removed to the outside and mold growth prevented.
Consumption
How much electricity does bathroom ventilation consume?
This varies depending on the device. In particular, it is not possible to give a general answer for exhaust air devices that operate as needed. Ventilation with heat recovery only consumes 2-3 watts of power. This results in electricity costs of approximately €8 per device per year.
Retrofitting or installing bathroom ventilation?
Do you need help with installation or would you like individual advice? Our ventilation experts are happy to assist you.