Frequently asked questions

Opening the windows on a hot day won’t cool your home, it will just let more hot air in.  A heat recovery ventilator retains heat in winter and cool in summer. Therefore, we do not recommend switching off the heat recovery ventilation system in summer either – keep it running at low power. If possible, the heat exchanger will cool the fresh outside air by at least a few degrees. The intelligent automation of the ventilation unit will sense the cool air in the evening and open the bypass damper of the heat exchanger (depending on the equipment). The unit will take care of your comfort both day and night in different modes. On extremely hot days, only the air conditioner will provide quality cooling.

An eternal question with a standard answer. Two in one will never be as good as two separate ones – that goes for coffee as well as for engineering solutions. The key is to understand that ventilation and cooling require very different amounts of air. 80-100 cubic metres per hour will be enough to ventilate a home, while 500-800 cubic metres will be enough for quality cooling. We do not recommend combining the two systems, also because if you want to transport cool air through the ventilation system ducts, it is likely that indoor humidity will condense on the duct walls. Therefore, the entire room piping should be thermally insulated. The recuperator does not have an active cooling element, but when the indoor air is cooler than the outdoor air, it will keep the room cool for some time by reversing the heat retention in winter.

Opening the windows on a hot day won’t cool your home, it will just let more hot air in.  A heat recovery ventilator retains heat in winter and cool in summer. Therefore, we do not recommend switching off the heat recovery ventilation system in summer either – keep it running at low power. If possible, the heat exchanger will cool the fresh outside air by at least a few degrees. The intelligent automation of the ventilation unit will sense the cool air in the evening and open the bypass damper of the heat exchanger (depending on the equipment). The unit will take care of your comfort both day and night in different modes. On extremely hot days, only the air conditioner will provide quality cooling.

The activated carbon particles in the G4 Carbon filter material are designed specifically to trap odours. The filter material itself is also denser than M5, but less dense than F7:

Unfortunately, we cannot guarantee that all outdoor odours will be eliminated. If there is a lot of heating, a filter alone may not be enough.

Install a recirculating cooker hood in A, A+, A++ sealed dwellings. Its purpose is to collect moisture and grease. A recuperator will remove odours from cooking through the air vents in the kitchen area. The use of carbon filters is possible but not necessary.

Almost any cooker hood will become a recirculating cooker without being connected to an air extraction duct. The most modern fume extraction solutions direct the flow of purified air under or over kitchen cabinets. From there it will be collected with the remaining odors by a ventilation unit.