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Welcome Page Active ventilation with heat recovery

Active ventilation with heat recovery

General Information

With the aim of reducing the overall energy consumption of buildings and thus both saving heating costs and protecting the environment, buildings have become increasingly dense over the past few years. This means that “natural” ventilation is severely restricted. The adequate supply of fresh air serves on the one hand to improve living comfort and on the other hand to prevent mold and thus to protect the building and the residents. In the Energy Saving Ordinance (EnEv) requirements for the “air exchange” were defined which determine the necessary air circulation, in addition to ventilation by open windows. The challenge for the planners and architects to adhere to these requirements by planning proper controlled ventilation. In addition to a mechanical ventilation, the goal should be to provide some form of heat recovery, where possible.

Systems with heat recovery options tend to use the same principle:
A rotating fan inside the ventilation system transport used air from the inside to the outside. While flowing through the system, the used warm air transfers some of its energy to a ceramic heat exchanger, capturing the heat. After a set time intervall, the fan changes rotation direction to transport colder, fresh air from the outside, through the heat exchanger into the room. The heat exchanger transfers the heat to the air, providing for a simple, but sophisticated way of reusing the energy put into heating the room. This method uses siginificantly less energy than opening the windows, while offering for a controlled and higher air exchange.

We have set out to provide a heat recovery system with the highest level of soundproofing against outside noise, providing not only for fresh but als silent air. Simple assembly, elegant facade covers and a high degree of customization are just a few of the other benefits that distinguish our ventilation systems. The following is an excerpt of the solutions that you will find at Ventomaxx – challenge us with your project!

Decentralized ventilation units from Ventomaxx with heat recovery are available as HRV RONDO IQ series. They stand for high-quality, decentralized ventilation comfort with extremely energy-efficient heat recovery and with above-average protection against outside noise. In addition to typical individual room ventilation, the intelligent and sophisticated control system includes numerous combination options for cross-room ventilation concepts for controlled living space ventilation, office ventilation, ventilation for medical centers, schools, kindergartens, etc.

The degreee of heat provision is, across the different product lines, higher than 90%. As a result, you save valuable primary energy with a heat recovery device (energy efficiency class A) and avoid unnecessary ventilation heat losses, which has a lasting positive effect on the energy balance of your property in the form of lower energy costs. All decentralized heat recovery devices of the WRG series are factory-fitted with a class G3 hygiene filter. Pollen filters in F6 quality are also available for allergy sufferers. Due to their insulation-free design, Ventomaxx heat exchangers are unique in terms of air hygiene and can be cleaned mechanically without wear. Revision and filter change on the entire heat recovery system are particularly user-friendly and of course possible without tools.

The heat recovery units are frost-proof in winter operation even at low outside temperatures. The particularly high level of heat recovery also makes the devices very comfortable. With an outside temperature of 0 ° C, the supply air temperature is up to + 17 ° C. Additional post-conditioning of the outside air is therefore no longer necessary.

Despite an ideal dehumidification performance, the systems do not dry out your living spaces. This gives you the healthy living you need and also protects valuable furniture and wooden floors. During the summer months, the heat exchanger can be deactivated via cross ventilation in order to supply cool night air to the living areas.

Numerous installation designs enable, especially in multi-storey apartment buildings, highly integrative and sophisticated architectural ventilation solutions (e.g. LAL, concealed within the reveal). All device components are made to order in our factory for a practical, providing for a flawless installation, thus ensuring a smooth construction process.

All Ventomaxx HRV devices consist of 2 separately retrievable modules (1st shell ring module set, 2nd final assembly set). This means that the assembly can be adapted to the construction progress at any time.

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  • highest heat recovery 
  • smallest dimensions
  • extremely energy-efficient
  • versatile/flexible mounting options
WRG RONDO IQ

Construction-Ring-Module-set

Consisting of connected elements, that can easily be extended (adding elements depending on wall thickness)

condensate outlet device

outlet of the flat duct is equipped with a drainage outlet, so accumulating condensate can drain away from the facade.

IQ DESIGN Cover

With adjustable air flow; Filter change and revision take place without tools; smallest dimension: 200x200x12 mm; G3 filter integrated at the factory (pollen filter F6 optional)

CR SMART

Selectable air flow; easy to use

EC-fan

Energy efficient, axial EC fan; can be revised without tools

Ceramic Heat Exchanger

With hexagonal honeycomb structure; closed-cell, without adhesive insulation for maximum hygiene and wear-free cleaning; Degree of heat provision> 90%;

Facade Cover

Can be painted according to customer requirements. Special dimensions / structures possible (for higher quantities)

Flat Duct

Representation in the LAL version; depending on sound insulation requirements; adjustable in length per customer request

SMART RONDO HRV

our smartest heat recovery solution

With its high design standards, SMART RONDO HRV units are among the smallest heat recovery units of their type.

The series offers numerous installation versions for highly integrated and architecturally sophisticated ventilation solutions (e.g. LAL, concealed within the reveal).

To ease installation, components can be called from an order, depending on the progress of construction work (structural ring module set will be delivered after shell of building is erected, final assembly kit will be delivered after rendering is completed).

The IQ DESIGN COVER on the room side is thermally insulated and can be controlled mechanically via three ventilation levels. With its 200 x 200 mm, it is one of the smallest and most discreet panels on the market. Filter change and revision are easily done without the need for any tools.

SMART HRV RONDO units  in dB MAXX design stand for highly soundproofed heat recovery (up to 64 dB Dn, e, w) and thus for unsurpassed, decentralized ventilation comfort.

CR SMART control solution provides for wired control of up to 6 HRV devices. Numerous program / operating options and the simple, intuitive operation make this system the most frequently used ventilation system in new buildings and renovations.

Both the LAW version (straight through the wall) as well as the LAL version (concealed within the reveal) are suitable for wall structures with of a minimum of 300 mm. Other installation variants are available upon request.

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Mounting Options

straight through the wall

Mounting Options

Reveal horizontal

Passive Außenluftdurchlässe & Zwischenwandlüfter LAL

Mounting Options

Reveal diagonally

Mounting Options

vertical flat duct down, angled

Aktive Lüfter WRG RONDO PLUS
LAW
LAL
LAL V50
LAF3 VU

Custom Requirements -
We find the optimal solution for every situation

Our range of sound insulation ventilation systems is particularly flexible and compact and has represented the highest sound insulation performance on the market for years. Custom solutions specifically catered to the needs of architects and technical planners are our day-to-day business. There are almost an infinite number of different mounting options available for solving your project-related tasks. With Ventomaxx you can implement hybrid concepts of passive and active sound insulation ventilation from a single source.

Custom Requirements -
We find the optimal solution for every situation

Our range of sound insulation ventilation systems is particularly flexible and compact and has represented the highest sound insulation performance 

on the market for years. Custom solutions specifically catered to the needs of architects and technical planners are our day-to-day business. There are almost an infinite number of different mounting options available for solving your project-related tasks. With Ventomaxx you can implement hybrid concepts of passive and active sound insulation ventilation from a single source.

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