AirBase – basement ventilation

The AirBase sensor-controlled basement ventilation system is an ideal weapon for mold control, basement drying or sauna ventilation. It automatically provides a comfortable climate in the basement. Ventilation sensors measure temperature and humidity inside and outside. The control unit activates the removal of humid indoor air and the supply of dry outdoor air when ventilation conditions are optimal. The AirBase Standard Set includes the control unit including sensors, two Limodor-FM exhaust air units with FM-EC fan insert and a fan box including speed controller, filter box and filter trays as supply air elements. Many configurations, depending on the specific basement situation, are possible with complementary or alternative components for single-family houses and apartment buildings.


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Dampness in the basement

When moist warm air meets cool surfaces, the water vapor it contains condenses on them and droplets form. This often becomes a problem in basements in the summer. This is because they are usually cooler than the ambient air due to their location in the ground. If warm, moist outside air enters basement rooms, condensation can form on the significantly cooler outside walls. A similar effect is created by drying laundry or when airing out a basement sauna. This can lead to mold. Musty smell and “typical basement atmosphere” arise. A normal ventilation system does not help here. Because if the absolute humidity outside is not significantly lower than in the cool basement, ventilation will be ineffective. Often, even additional moisture-laden air sinks into the basement rooms.

So the principle is “basement ventilation only works if it provides effective dehumidification!”

Operating principle

Human perception can hardly estimate the prevailing humidity in combination with the temperature. Therefore, AirBase works with a sensor control. Humidity and temperature sensors for inside and outside act as “sense organs”. An optimally matched control system is the “brain” and variably combinable ventilation elements are the “workers”.

  • The controller detects when optimal ventilation conditions are present. Only then it activates the ventilation. Faulty ventilation is prevented.
  • The activated ventilation elements exchange the humid basement air for dry outside air.
  • The switch-on and switch-off processes, based on temperature and humidity limit values, are individually adapted to the respective situation. This results in efficient and economical operation.
  • With the two available control units AirBase Standard and AirBase Comfort, optimum basement ventilation can be ensured both in a standardized basic configuration and in a configuration that can be planned as required, right from the planning stage.
  • Numerous components (sensors, fans, fan boxes, filters, intake and exhaust elements, etc.) from the extensive LIMODOR range are optimal combination partners.

Basement ventilation single family house

The AirBase Standard set contains all components for optimal ventilation of a classic single-family house basement. The fresh air supply is realized via a speed-controlled EC390 fan box with upstream filter and three filter trays. On the exhaust side, two energy-ficient and variably adjustable Limodor F/M-EC single-pipe fans for flush mounting are used. The automatic basement climate control is handled by the AirBase Standard sensor-guided control system.

Structure AirBase Standard basement ventilation for single-family houses (click to enlarge)

AirBase Standard control function for supply and exhaust air components (click to enlarge)

Basement ventilation apartment house

The example shows a basement ventilation system in which temperature and humidity are recorded via sensors at two indoor and outdoor points, respectively. Air supply from the outside and extraction from the inside of the basement are provided by one fan box each and several filter trays as outflow and intake elements, respectively. These are connected to each other by a central tube. Both strings are switched on or off together by an AirBase Comfort control unit. The ventilation elements used can be varied as required. Ventilation is activated when at least one indoor sensor measures higher humidity in the basement than the outdoor sensor. If the indoor humidity is equal to the outdoor humidity everywhere in the basement, then the system switches off.

Realization example of a multi-family house – basement ventilation with AirBase comfort control (click to enlarge)

AirBase Comfort control function for supply and exhaust air components (click to enlarge)

AirBase videos

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FAQ on the topic of exhaust air system

Why is a control unit and sensors useful for basement ventilation?
Does basement ventilation quickly get the steam out of the room after a sauna session?
Are there basement ventilation variants for single and multi-family houses?
Is basement ventilation standardized?
Can a living room ventilation manage an evening with many guests?
Does a living room vent run all the time, even when I'm not at home?
Can I still open windows or patio doors?
How are large storage rooms, e.g. lattice cellars in apartment blocks, ventilated?
Are fire and smoke spread possible through central air vents?
How is a central ventilation system controlled?
Why do I need basement ventilation?
Centralized, decentralized or single room solution?
How flexible are central ventilation systems?

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