x-well® central domestic ventilation
Healthy thermal comfort for every living situation. Contemporary construction or energy efficient renovation and the specifications of the EnEV require a high level of energy efficient insulation. That is why central residential ventilation systems are now standard in passive houses, low-energy houses, and housing renovations. x-well residential ventilation supplies rooms with fresh air around the clock and thus permanently creates hygienic thermal comfort and a pleasant level of humidity, not too high. By filtering dust and pollen, your own four walls also become a place of well-being for allergy sufferers. As no window needs to be opened, street noise stays outside, as do pollen and allergens. We only install external filters of the highest possible filter class ePM1 according to ISO 16890 in all central ventilation units. During air exchange, odours are naturally also removed from the kitchen, bathroom, and WC. Apart from that, x-well residential ventilation systems consume very little energy while working due to the high heat distribution. So in contrast to window airing, no heat is unnecessarily lost.
The design air vents fit in with any interior design furnishings.
Awarded 
Benefits of x-well central residential ventilation
- Powerful heat recovery ensures a pleasant supply air temperature and saves heating energy
- Effective sound insulation thanks to sophisticated system components
- Avoids draughts
- Automatic summer bypass for use in the cool night air in the summer
- Demand-regulated control via humidity sensor (device dependent)
- Low electricity consumption thanks to efficient fans
- Device-dependent certified by Passive House Institute (PHI)
- Device-dependent certified according by the German Institute for construction technology (DIBt)
Central residential ventilation supplies the individual rooms with fresh air via a ventilation unit, usually placed in the plant room, and a distribution system.
| Product description | Floor space | Heat distribution | Acoustic power level | Energy efficiency class |
| x-well S series | ||||
| x-well living space ventilation unit S180 / S180 E | up to approx. 125 m2 | 92.1 % / 88.6 % | 39 dB(A) | A+ / A |
| x-well living space ventilation unit S280 / S280 E | up to approx. 175 m2 | 92.4 % / 84.8 % | 43 dB(A) | A+ / A |
| x-well living space ventilation unit S370 / S370 E | up to approx. 240 m2 | 92.5 % / 82.7 % | 46 dB(A) | A+ / A |
| x-well living space ventilation unit S460 / S460 E | up to approx. 350 m2 | 88.6 % / 81.5 % | 48 dB(A) | A / A |
| x-well F series | ||||
| x-well living space ventilation unit F150 | up to approx. 105 m2 | 87.0 % | 38.0 dB(A) | A |
| x-well living space ventilation unit F170 / F170 E | up to approx. 120 m2 | 92.1 % / 81.9 % | 45 dB(A) | A+ / A |
| x-well living space ventilation unit F270 | up to approx. 210 m2 | 84.4 % | 41 dB(A) | A |
x-well® A21 / A20 single-pipe fan
Ideal for all extract air rooms.
In bathrooms, WCs, and all extract air rooms, x-well single-pipe fans reliably ensure that used and humid air is transported to the outside. The fans run extremely smoothly and quietly. Through different versions and combination options, they offer ideal solutions for all requirements.
- Quick and easy unit installation: no tools required with snap locks and electrical plug connectors
- Small depth – suitable for confined spaces
- Convertible plastic outlet nozzle with automatic check valve for variable installation
- High compression capability – ensures constant supply volume while operating several fans at the same time
Installation situation x-well A20 / A21
x-well® A21
The single-pipe fan is designed for decentralised ventilation of individual rooms. Thanks to the intelligent design, one fan can be used for many different applications. The EC motors technology used ensures a high efficiency and the lowest acoustic emissions.
Characteristics
- The robust EC motor has double-sided closed ball bearings, needs very little energy, and has thermal overload protection.
- The fan is designed to be run at slow speeds and runs extremely smoothly and quietly as a result.
- The fans are installed without tools using snap locks and plug connectors.
- High compression capability ensures constant supply volume while operating several fans at the same time.
- Clear product portfolio, low storage capacities, and high flexibility as a result.
- Various functions can be illustrated through the choice of cover.
x-well® A20
The single-pipe fan is designed for decentralised ventilation of individual rooms. Can be used for many applications thanks to the wide variety of versions.
Characteristics
- Ventilation with and without fire-resistant shaft according to DIN 18017-3
- The fan is designed to be run at slow speeds and runs extremely smoothly and quietly as a result
- The fans are installed without tools using snap locks and plug connectors.
- High compression capability
- Various functions can be illustrated by selecting the fan type
- Different flush-mounted housings to meet a wide range of requirements
- DIBt-certified (German Institute for Civil Engineering)
x-well® A12 small room fan
Ideal for bathrooms, WCs, and kitchens.
For decentralised ventilation right through the outer wall of individual rooms. Ideal for bathrooms, WCs, and kitchens. Particularly quiet and with low power consumption due to innovative EC motor technology.
- Quick and easy unit installation
- Small size – suitable for confined spaces
- Simple, convenient, and effective version of an exhaust fan
x-well® A12
The small room fan is ideal for bathrooms, WCs, kitchens, and every other room – with innovative EC technology.
Characteristics
- Quiet and low power consumption thanks to state-of-the-are EC technology
- 2 versions – time control and humidity/time control available
- Available in the set – fan, wall sleeve, and weather protection grate
- Additional base load can be activated
- Integrated check valve
x-well® ALD12 / ALD11 outer wall vent
For a natural supply air replenishment in decentralised systems.
The cost-efficient and simple solution for the realisation of ventilation concepts. They ensure a natural flow of supply air into the rooms. With high sound insulation, low planning effort, simple installation, and easy maintenance.
- Highest possible sound insulation in their class (additional sound absorption elements and window soffit dB+)
- Minimal planning effort required, simple to install and easy to maintain
- improved preservation of the fabric of the building and prevention of the formation of mould
x-well® ALD13
Characteristics
- The outside air vent with design inner cover, with integrated ISO coarse filter 60% (G4) and shutter.
- Sound absorbing ventilation – highest possible sound insulation in its class (additional sound absorption elements and window soffit dB+)
- If the correct wiring has been taken into consideration, it can be retrofitted to become a system with heat recovery.
- Cost-effective and simple system for the realisation of a ventilation concept.
- Ideal interaction with single-pipe fans and small room fans.
- Integrated wind pressure protection against a cooling of living spaces in high winds.
- Filtering of the outside air
- Noise insulation ring with 3 chambers for minimal pressure losses, highest sound insulation, and volume flow adjustment.
- Available with internal design glass panel and external cover in white and stainless steel
x-well® ALD12
The outside air vent is available as a design version with an internal glass panel.
Characteristics
- Sound absorbing ventilation – highest possible sound insulation in its class (additional sound absorption elements and window soffit dB+)
- If the correct wiring has been taken into consideration, it can be retrofitted to become a system with heat recovery.
- Cost-effective and simple system for the realisation of a ventilation concept.
- Ideal interaction with single-pipe fans and small room fans.
- Integrated wind pressure protection against a cooling of living spaces in high winds.
- Filtering of the outside air
- Noise insulation ring with 3 chambers for minimal pressure losses, highest sound insulation, and volume flow adjustment.
- Available with internal design glass panel and external cover in white and stainless steel
x-well® ALD11
The outside air vent is available with a plastic design outer hood.
Characteristics
- Sound absorbing ventilation – highest possible sound insulation in its class (additional sound absorption elements and window soffit dB+)
- If the correct wiring has been taken into consideration, it can be retrofitted to become a system with heat recovery.
- Cost-effective and simple system for the realisation of a ventilation concept.
- Ideal interaction with single-pipe fans and small room fans.
- Integrated wind pressure protection against a cooling of living spaces in high winds.
- Filtering of the outside air
- Noise insulation ring with 3 chambers for minimal pressure losses, highest sound insulation, and volume flow adjustment.
x-well® controls
Bluetooth button for x-well D13
The Bluetooth button for x-well D13 is available in two versions, battery or mains operation. For easy operation of the x-well D13 ventilation system with the basic functions. Commissioning using a smartphone APP (iOS, Android) is possible.
Features:
- heat recovery/ventilation
- four levels
- housing economy mode
- sleep mode
- battery and mains version available
- can be integrated in the switch range
LED control for x-well D12
For controlling several x-well D12 reciprocating fans. The LED control can be integrated in conventional switch systems using an on-site adapter ring.
Menu function:
- Eco-mode (heat recovery mode) selectable
- Aeration mode selectable
- Fan speeds can be adjusted using the arrow buttons
- Filter replacement indicator available
Touch control for x-well D12
For controlling several x-well D12 reciprocating fans with touch screen. The touch control can be integrated in conventional switch systems using an on-site adapter ring.
Menu function:
- Mode display (display of the active mode and the fan speed)
- Fan speed (up/down arrow buttons)
- On/off button
- Eco-mode (heat recovery mode) selectable
- Aeration mode selectable
- Sleep mode, summer mode, party mode, shock ventilation mode, automatic mode, time mode, holiday mode available
- Filter status display available
- Group selection for separate activation
- Control locking option provided
Smart Control for x-well D11 and D12
The control element is compatible with the x-well D11 and D12 pendulum fan systems. Operation via smartphone is possible (Android and iOS). Only one Smart Control can be integrated in a WiFi network!
Comfort control for x-well D11
For controlling several x-well D11 reciprocating fans with integrated humidity sensor including power supply unit. Connection of max. 4 fans.
Menu functions:
- Eco-mode (heat recovery mode) selectable
- Automatic mode selectable
- Aeration mode selectable
- Sleep mode selectable
- Fan speeds can be adjusted using the arrow buttons
- Filter replacement indicator available
Easy control for x-well D11
For the control of several x-well D11 reciprocating fans with power supply unit included. Connection of max. 4 fans.
- Eco-mode (heat recovery mode) selectable
- Aeration mode selectable
- Sleep mode selectable
- Fan speeds can be adjusted using the adjusting knob
- Filter replacement indicator available
5 year system warranty
Finally the new Kermi heating system has been installed. Or the Kermi ventilation system. Nothing left to stop you feeling cosy at home. With our 5-year system warranty, we are happy to prove the quality of our products and our service promise to you.
Just three steps to a 5 year system warranty:
1. Have the Kermi system installed by a specialist company
2. Have Kermi Customer Service commission the system (or in the case of ventilation systems, a specialist company)
3. Annual servicing by Kermi Customer Service or by a specialist company
Residential ventilation advice
What residential ventilation is the right one?
Whether it’s a single-family house or an multi-family house, a new-build or a building that has been modernised for energy efficiency – controlled residential ventilation provides fresh air and healthy thermal comfort. Either centralised or decentralised ventilation systems are suitable. This guide will provide you with an overview as to which residential ventilation system is suitable for which building and should help you choose one.
This is how important controlled residential ventilation filters are
Controlled residential ventilation continuously supplies living spaces with fresh air. The filters – outside air filters and extract air filters – play an important role here. What quality filters do you need? How often do the filters need to be replaced?
More information on filters for controlled residential ventilation
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