toilet

Typically, single-pipe ventilation systems or fans are used in bathrooms or combined bathroom/WC rooms. Which types are actually used depends on several factors that should be clarified in advance:

• What is the ventilation supposed to do? Vacuum bad odors? Dry the room?
• How large is the room and thus the volume of air to be exchanged?
• How busy is the room, i.e. does the ventilation have to be very fast?
• Can the exhaust air be transported directly outdoors by a short route or is it disposed of via a central exhaust air pipe? Are windows present?
• Is the fan intended as a single room solution or is it part of a centralized residential ventilation system.
• Is sufficient supply air ensured?

As a rule of thumb, axial fans are significantly less powerful than single-pipe ventilation systems and are only suitable for short, straight air transport paths. Their flexibility in control and installation options is limited. They are unsuitable for central ventilation pipes, for example in apartment blocks. If large quantities of air have to be moved over long distances in a short time, single-pipe ventilation systems have a clear advantage in practically all aspects: performance, multiple control options (time, humidity, movement, etc.), energy efficiency, multiple configurations, click & play installation. The LIMODOR systems offer optimally matched solutions depending on the specific ventilation task.

No, usually the fan is activated when the light is turned on and continues to run for a while. Or it is started by a motion module. Shutdown occurs automatically after the exchange of stale air. Alternatively, there are also humidity controls that switch ventilation on and off depending on the moisture content detected.

A comparison: For 7 minutes, a LIMODOR WC fan needs only 0.7 watts. A 100 watt light bulb for toilet lighting requires 11.7 watts for the same time, which is quickly 17 times as much electricity.

No, because only air is extracted from the room, but no cold outside air is drawn in. The room remains at the right temperature because warm air flows in from the living area.

This depends on the device performance. A simple, low-power axial fan will certainly take longer than a single-pipe fan. A typical LIMODOR toilet aerator takes only 5 to 7 minutes to remove all odors in a common toilet.

Compared to uncoordinated, often incorrectly performed window ventilation, any exhaust system, no matter how simple, offers great energy-saving potential. Because fans primarily only run when they are needed. But then they provide a quick and convenient remedy – for example, for odors in the toilet or dampness in the bathroom. Control is via the light switch, timers or automated via motion and humidity sensors. Forgotten windows left open for hours are thus excluded.

Our star in terms of energy efficiency is the Limodor F/M-EC. Its highly efficient but powerful motor, smart controls, and even audible and visual indicators when dirty filters degrade efficiency make it our number one “air conditioning fan.” 40 to 50% power savings compared to conventional systems are easily achievable.

Depending on the type, Limodor exhaust systems offer very high flexibility and ease of maintenance. Many older fan types have been operating for half a century still using the first blower insert. If the blower does become defective, it can be quickly removed and replaced with a new one. The modern click-in system makes fan replacement particularly easy and practically tool-free. Depending on the connection and the selected fan activation – for example via overrun relay, humidity relay, motion relay, door contact or light switch – there is also great variability and exchangeability of the controls for almost all fans.

In the case of the modern top unit, the Limordor F/M-EC energy-saving fan, a smart plug-in board system has been developed that allows conversion to a different activation or a combination in just a few simple steps by replacing these control modules. For example, a two-stage blower insert of a bathroom ventilation system can be equipped with an adjustable overrun relay and a humidity module. This provides optimal ventilation performance and rapid moisture removal combined with automated comfort and minimal energy consumption.

Depending on whether axial fan, centrifugal fan or single-pipe fan, the mounting options are variable. Axial flow fans such as the Limax are typically installed in straight short ducts, such as a bathroom or toilet vent, that pass directly through the exterior wall. Centrifugal fans are also installed directly in the pipe run and are also suitable for longer pipes. However, depending on the structural situation, fire protection elements must be installed separately.

The most flexible is the Limodor single-pipe ventilation system. The fans can be installed as flush-mounted and surface-mounted variants, in and on walls or on the ceiling. They cover all areas of application in the house and also work as central exhaust in the attic, as individual fans, groups or in combination with other ventilation elements.

Sometimes central ventilation is optimal. For example, if it can be planned from scratch for the entire living area in a new building with maximum efficiency. Or as basement ventilation, where a smart control system ensures condensation, mold growth and typical musty basement odors for the entire basement floor under sensor control.

A decentralized living space ventilation system with heat recovery is often ideal for renovations. It is ideal for retrofitting small apartments, offices or bedrooms, for example, where installation costs are manageable. In addition, these systems are very quiet and extremely energy efficient.

Sometimes, however, single units in only some rooms such as toilets, bathrooms, wellness rooms, utility rooms or garages are the best solution. Control modules allow the fans to be optimally adapted to the task at hand and automated. Combined with properly executed window ventilation in the rest of the apartment, this creates an inexpensive, yet energy-saving and comfortable solution.

The advantages and disadvantages, and then the appropriate system selection, are best made together with the architect or builder and the installer who will plan and implement the ventilation design.

Ventilation systems are indispensable partners in modern new buildings as well as in renovation projects, and in times of energy and climate change they are valuable sustainability tools for the environment and the wallet. In order to generate maximum benefit with an economically sensible investment in new construction or renovation, some basic considerations should be made and expert advice sought from ventilation engineers, installers or planners:

• New construction or renovation? In the case of new buildings, optimal ventilation planning and thus full freedom of choice is possible. In the case of refurbishment, the aim should be to minimize the necessary construction work – such as the need to break through walls, the installation work required for pipes and electrical connections, and so on. – for retrofitting. Maximum energy efficiency must of course be ensured. Decentralized ventilation solutions or Exhaust air systems in individual rooms.
• Window opening versus investment for ventilation units: Fans are particularly useful wherever multiple synergies can be utilized. For example, energy efficiency with simultaneous protection against odor, noise, insects or pollutants. Toilets and bathrooms are difficult to ventilate quickly and efficiently by simply opening windows to remove odor or moisture. In the process, they also cool down in the cold season, which wastes energy and makes the indoor climate uncomfortable. An exhaust air system pays for itself particularly quickly.
• Capital expenditure: Centrally controlled complete system for the whole house? Heat recovery? Include basement? Or only ventilation of exposed rooms such as toilet, bathroom or sauna room? With which and how many fans can optimal effect be achieved?
• Maintenance effort: In the case of decentralized, exhaust air and supply air systems, the installed filters must be replaced regularly and, for example, insect screens must also be checked. For some central air systems, additional considerations include sometimes long, hard-to-reach ductwork or regular inspection of the heat pump where present. This increases maintenance costs.
• Operating costs: LIMODOR systems are extremely energy-efficient. However, some systems still run at a very economical base load level all day to ensure a constant indoor climate. Other systems such as single-pipe ventilators can be controlled in a particularly efficient and automated manner via humidity, time or movement modules, so that the additional costs for these components quickly pay for themselves. Economy optimal for renovations are also decentralized solutions with integrated heat exchanger.

The most important bonus of the Limodor venting system is the possibility of connecting many units to a single exhaust duct, which is routed through a roof outlet, for example. Elaborate piping and unsightly fan grilles on the facade are eliminated. Fire dampers are already integrated in the housing. Typically, this variant is used in multi-apartment buildings for toilet and bathroom ventilation.

The devices are very simple and can also be mounted according to the construction progress. In the shell is first walled only the separate housing with a protective cover, the connections for power and air are connected. With a few simple steps and minimal tools, the blower insert is later connected to the power supply and simply clicked into place.

As exhaust fans, Limodor single-pipe fans are true powerhouses that can be mounted in any position and will not be disturbed by longer piping or kinks. They are multifunctional and can be used as toilet vents, bathroom or kitchen ventilators as efficiently as components of central ventilation systems or basement ventilation systems.