FAQ

  • Questions about floor heating

    How does floor heating work?

    The principle of floor heating is to heat the room from below, which is an exceptionally comfortable heating method. Floor heating pipes can be embedded directly into the concrete slab (heavy/wet floor heating), or special heat distribution panels can be used (e.g. SpeedUpTM) located closer to the finished floor (light/dry floor heating).

    Please note: Up to 95% of all systems are installed as heavy floor heating. Contact your installer if you are in doubt as to whether your system has been installed as heavy or light floor heating.

    Heavy floor heating has a relatively long response time. It will generally take about 1-2 hours per adjusted degree for the system to reach the desired room temperature. On very few days in the year, typically during transitional periods, temperatures slightly over or under those set must be expected. This occurs when the weather changes faster than the controller is able to keep up, e.g. in the event of sudden periods of intense sunlight or sudden, significant drops in temperature. Light floor heating has a relatively short response time. It will generally take about 20 minutes for the system to achieve the desired room temperature for each adjusted degree.

    Can I use temperature reduction periods when I have floor heating?

    Yes, you can, as long as you keep certain things in mind.

    Heavy floor heating

    We recommend one long temperature reduction period (at least 7 hours) with a slightly lower economy temperature setting. The difference between the comfort and the economy temperature must not be more than 1-2 degrees. Lowering the temperature too much will prevent the system from reaching the low temperature and no energy saving will be achieved. If you attempt to achieve too great a reduction in temperature you risk that the heat source (e.g. boiler) will work inefficiently. This will have a negative impact on your energy consumption.

    Light floor heating

    We recommend setting a lower economy temperature for one or two extended periods. The difference between the comfort and the economy temperature must not be more than 3-4 degrees, as otherwise the system will not be able to keep up. If you attempt to achieve too great a reduction in temperature you risk that the heat source (e.g. boiler) will work inefficiently. This will have a negative impact on your energy consumption. 

    I have wireless battery room thermostats. What happens when batteries are dead?

    When the battery-operated units are close to running out of power, an alarm will be issued. The system will not “forget” anything even if a unit temporarily loses power. In the event of a battery-operated unit running completely out of power, the unit will set the room to a certain temperature before the batteries die.

    If you experience that battery life time is less than 2 years, there can be several possible causes:

    • Rechargeable batteries are being used. Solution: Switch to non-rechargeable alkaline batteries.
    • Old batteries (batteries also have an expiry date). Solution: Switch to non-rechargeable alkaline batteries.
    • Only applies to wireless systems: Unstable wireless network. Solution: Contact your installer. If the wireless network is unstable, the room device will communicate more often than normal, resulting in increased battery consumption.

    How can I save energy?

    Why maintain a high room temperature when you’re not at home? Lowering the room temperature by one degree will reduce your heating costs by approx. 5%. For this reason it makes perfect sense to use temperature setbacks. If you have hydronic floor heating, you should not lower the temperature by more than 1-2 ˚C, as the cooling/heating time is very long.

    I cannot get the right temperature?

    Room temperature too high:

    • Only applies to battery operated devices: When batteries are running low, the device will automatically set the room to a certain temperature before the batteries die. Solution: Replace the batteries
    • Someone may have set the room device too high. Solution: Reduce the room temperature
    • Strong solar gains in low energy homes. Solution: Solar screening / blinds

    Room temperature too high:

    • The heat source is providing no or insufficient heat. Solution: Check if the heat source is active and increase the supply temperature. Note: Increasing the supply temperature will make the heat source operate less energy efficient – especially a heat pump. It may also result in more fluctuating room temperatures.
    • The heat source itself is operating with an automatic temperature reduction schedule. Solution: Deactivate temperature reduction schedule on the heat source if it conflicts with the desired operation.
     • Defective circulation pump. Solution: Check the circulation pump. If necessary, contact your installer.
    • The room thermostat has been set too low. Solution: Set the thermostat to the desired temperature, at ½-degree intervals, if possible.
    • If the room has never been able to reach the desired temperature, it may be due to an incorrectly dimensioned heat emitter (too long or limited pipe circuits) or insufficient hydronic balancing (insufficient water flow to the floor heating circuit). Solution: Contact your installer

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