The serial number can be found on a label inside the ventilation unit. The serial number consists of two rows of digits and is unique to your unit.

If you have a airhandling unit designed as a cabinet, the connections are located on the top of the unit, at the front between the duct connections. If you have a unit mounted in the ceiling or installed on a wall, for example a CL-type unit, the connections are located on one of the long sides. In many cases, these connections may be hidden behind an enclosure. In such cases, an inspection hatch should be installed to provide access to the connections.

All Flexit guides and manuals are available on our website. You can find the correct guide by searching for the product number of your product. This will give you access to all relevant information specific to your product.

A cold bathroom is usually not caused by the EcoNordic unit itself, but by how heat is distributed throughout the heating system. Check that the system has the correct pressure and adequate circulation so that heat can reach the bathroom.Also verify that the heating circuit serving the bathroom is open and correctly adjusted. If the home has a hydronic heating system, balancing may be required to ensure proper heat distribution between rooms. We recommend having a plumber or qualified professional inspect the system pressure, circulation, and balancing. A properly adjusted heating system provides a more even temperature, improved comfort, and energy-efficient operation.

If the ventilation unit is locked to one speed, it is usually because something is overriding the control system. This may, for example, be a humidity sensor, a pressure switch, a kitchen hood, or another type of external control that temporarily has priority. To identify the cause and ensure correct operation, it is recommended to contact a service company or the installer of the system.

The wireless handle contains a battery, which may be depleted or defective. Try replacing the battery with a new, high-quality battery and test the function again. In many cases, this will resolve the problem.

A complaint may be rejected if the product has not been installed correctly, has not been maintained in accordance with the user manual, or has not been used as described by Flexit. This includes, among other things, correct selection and use of filters as well as proper operation of the unit. As the owner of the product, you are responsible for familiarising yourself with the product’s properties and maintenance requirements. If you did not receive the necessary information at the time of purchase, this should be addressed with the dealer who sold you the product.

Airhandling units can have different settings for many reasons. This depends, among other things, on the type of unit, the size of the home, how the ventilation ducts are installed, the floor plan, and how the system has been designed and balanced. The settings are adapted to each individual home and are intended to meet the specific ventilation needs there. Therefore, it is completely normal for settings to vary from one home to another, even if the houses appear similar.

Both EcoNordic WH4 and a ground source heat pump with FTX provide high energy efficiency and a good indoor climate, but EcoNordic WH4 can be a smarter choice, especially from a financial perspective. A ground source heat pump requires drilling and extensive installation work, resulting in high initial investment costs. EcoNordic WH4 is easier to install and requires no drilling or outdoor unit, leading to a significantly lower total cost. Although ground source heating can offer slightly lower annual energy consumption, the savings often do not justify the higher investment over time. With EcoNordic WH4, you get a shorter payback period and lower financial risk. In addition, EcoNordic combines domestic hot water, heating and ventilation in one compact unit, providing simpler installation, reduced space requirements and better interaction between the functions.

There are several factors to consider when placing a ventilation unit. The most important is to have a short distance to the outdoor air intake and exhaust on the exterior wall, which should preferably be located on a north- or east-facing wall to reduce the impact of sun and heat. The unit must also be positioned so that there is easy access for service and filter replacement.Cabinet-type units are often placed in a storage room, technical room, or laundry room. Units designed for attic installation are normally placed in the attic. Flexit also offers ceiling-mounted units that can be installed in the ceiling. These are particularly well suited for smaller homes or apartments with limited space and can, for example, be installed in a hallway or entrance area.